Samsung 990 vs Samsung 990 EVO

Samsung 990 — exact UK 2 TB MZ-V9V2T0BW specifications and features Samsung SSD 990 data sheet, revision 1.0 (linked from the UK MZ-V9V2T0BW page)

Samsung 990PCIe 4.0 x4; NVMe

Samsung 990 EVOPCIe 4.0 x4 or PCIe 5.0 x2; NVMe

Sources

Samsung 990

Manufacturer specification · Samsung states the 990 is backward compatible with PCIe 3.0. Host protocol and lane availability still determine actual operation.

Samsung 990 EVO

Manufacturer specification · Host support and available lanes determine operation; interface generation is not an application-performance result.

Samsung 990 EVO — manufacturer specifications Samsung 990 EVO — capacity-specific datasheet

Check the exact configuration and source conditions for your use.

Warranty write threshold

Samsung 990 — exact UK 2 TB MZ-V9V2T0BW specifications and features Samsung SSD 990 data sheet, revision 1.0 (linked from the UK MZ-V9V2T0BW page)

Samsung 990800 TB

Samsung 990 EVO1200 TB

Sources

Samsung 990

Manufacturer specification · Warranty write threshold for the 2 TB capacity (1 TB model: 400 TB), in compliance with JESD218; not a guaranteed failure point.

Samsung 990 EVO

Manufacturer specification · Capacity-specific warranty write threshold, not a guaranteed failure point.

Samsung 990 EVO — capacity-specific datasheet Samsung consumer SSD limited warranty — model, capacity and first limit

Check the exact configuration and source conditions for your use.

Limited warranty time

Samsung 990 — exact UK 2 TB MZ-V9V2T0BW specifications and features Samsung SSD 990 data sheet, revision 1.0 (linked from the UK MZ-V9V2T0BW page)

Samsung 9903 years

Samsung 990 EVO5 years

Sources

Samsung 990

Manufacturer specification · Time limit, not a lifespan prediction. Coverage also ends at the TBW threshold; eligibility and full terms apply.

Samsung 990 EVO

Manufacturer specification · Time limit, not predicted lifespan; coverage also ends at the TBW threshold and is subject to full terms.

Samsung 990 EVO — capacity-specific datasheet Samsung consumer SSD limited warranty — model, capacity and first limit

Check the exact configuration and source conditions for your use.

Included cloning software

Samsung 990 — exact UK 2 TB MZ-V9V2T0BW specifications and features

Samsung 990Samsung Magician data transfer

Samsung 990 EVOSamsung Magician data migration

Sources

Samsung 990

Manufacturer specification · The UK feature block says Magician can transfer data. Check software version, operating-system support and migration requirements.

Samsung 990 EVO

Manufacturer specification · The UK feature page advertises data migration through Samsung Magician. Check software version, operating-system support and migration requirements.

Samsung 990 EVO — manufacturer specifications

Check the software, operating-system and licence requirements. An available feature does not establish a measured speed improvement or support on every host.

Rated performance and conditions

Samsung 990 — exact UK 2 TB MZ-V9V2T0BW specifications and features Samsung SSD 990 data sheet, revision 1.0 (linked from the UK MZ-V9V2T0BW page)

Samsung 990Up to 7250 MB/s sequential read; up to 6450 MB/s cached sequential write

Samsung 990 EVOUp to 5000 MB/s sequential read; up to 4200 MB/s cached sequential write

Sources

Samsung 990

Manufacturer specification · Manufacturer up-to claims measured with IOmeter 1.1.0, Ryzen 9 7950X, ASRock X670E Taichi, 32 GB DDR5-4800 and Windows 11 Pro. Secondary drive in a fan-cooled desktop; writes use Intelligent TurboWrite within a specific transfer size. Firmware, host and workload affect results; Samsung does not list a post-cache write speed.

Samsung 990 EVO

Manufacturer specification · Manufacturer up-to claims measured with IOmeter 1.1.0, Ryzen 9 7950X, ASRock X670E Taichi, 32 GB DDR5-4800 and Windows 11 Pro. Secondary drive in a fan-cooled desktop; writes use Intelligent TurboWrite within its buffer. Firmware, host and workload affect results; Samsung does not list a post-cache write speed.

Samsung 990 EVO — manufacturer specifications Samsung 990 EVO — capacity-specific datasheet

Manufacturer peak claims depend on cache state, host and workload. Queue depth and test systems must match before performance can be compared; these figures do not establish a faster everyday drive.

Rated sequential read

Samsung 990 — exact UK 2 TB MZ-V9V2T0BW specifications and features Samsung SSD 990 data sheet, revision 1.0 (linked from the UK MZ-V9V2T0BW page)

Samsung 9907250 MB/s

Samsung 990 EVO5000 MB/s

Sources

Samsung 990

Samsung 990 EVO

Manufacturer specification · Manufacturer up-to claims measured with IOmeter 1.1.0, Ryzen 9 7950X, ASRock X670E Taichi, 32 GB DDR5-4800 and Windows 11 Pro. Secondary drive in a fan-cooled desktop; writes use Intelligent TurboWrite within its buffer. Firmware, host and workload affect results; Samsung does not list a post-cache write speed.

Manufacturer peak claims depend on cache state, host and workload. Queue depth and test systems must match before performance can be compared; these figures do not establish a faster everyday drive.

Show 6 more verified differences

Rated sequential write

Samsung 990 — exact UK 2 TB MZ-V9V2T0BW specifications and features Samsung SSD 990 data sheet, revision 1.0 (linked from the UK MZ-V9V2T0BW page)

Samsung 9906450 MB/s

Samsung 990 EVO4200 MB/s

Sources

Samsung 990

Samsung 990 EVO

Manufacturer specification · Manufacturer up-to claims measured with IOmeter 1.1.0, Ryzen 9 7950X, ASRock X670E Taichi, 32 GB DDR5-4800 and Windows 11 Pro. Secondary drive in a fan-cooled desktop; writes use Intelligent TurboWrite within its buffer. Firmware, host and workload affect results; Samsung does not list a post-cache write speed.

Samsung 990 — exact UK 2 TB MZ-V9V2T0BW specifications and features Samsung SSD 990 data sheet, revision 1.0 (linked from the UK MZ-V9V2T0BW page)

Manufacturer peak claims depend on cache state, host and workload. Queue depth and test systems must match before performance can be compared; these figures do not establish a faster everyday drive.

Rated random read

Samsung 990850000 IOPS

Samsung 990 EVO700000 IOPS

Sources

Samsung 990

Manufacturer specification · Manufacturer up-to claim for the 2 TB column (queue depth and block size not stated in the datasheet). IOmeter 1.1.0, Ryzen 9 7950X / X670E Taichi, 32 GB DDR5-4800, Windows 11 Pro, fan-cooled secondary drive; write results use Intelligent TurboWrite.

Samsung 990 EVO

Manufacturer specification · Manufacturer up-to claim, 4 KB QD32 / 16 threads. IOmeter 1.1.0, Ryzen 9 7950X / X670E Taichi, 32 GB DDR5-4800, Windows 11 Pro, fan-cooled secondary drive; write results require TurboWrite.

Samsung 990 EVO — manufacturer specifications Samsung 990 EVO — capacity-specific datasheet

Manufacturer peak claims depend on cache state, host and workload. Queue depth and test systems must match before performance can be compared; these figures do not establish a faster everyday drive.

Rated random write

Samsung 9901200000 IOPS

Samsung 990 EVO800000 IOPS

Sources

Samsung 990

Samsung 990 — exact UK 2 TB MZ-V9V2T0BW specifications and features Samsung SSD 990 data sheet, revision 1.0 (linked from the UK MZ-V9V2T0BW page)

Samsung 990 EVO

Samsung 990 EVO — manufacturer specifications Samsung 990 EVO — capacity-specific datasheet

Manufacturer peak claims depend on cache state, host and workload. Queue depth and test systems must match before performance can be compared; these figures do not establish a faster everyday drive.

Warranty terms and endurance if applicable

Samsung 9903 years or 800 TB written, whichever comes first; limited-warranty terms apply

Samsung 990 EVO5 years or 1200 TB written, whichever comes first; limited-warranty terms apply

Sources

Samsung 990

Manufacturer specification

Samsung 990 — exact UK 2 TB MZ-V9V2T0BW specifications and features Samsung SSD 990 data sheet, revision 1.0 (linked from the UK MZ-V9V2T0BW page)

Samsung 990 EVO

Manufacturer specification · Manufacturer coverage is subject to purchase eligibility and applicable terms. A used drive may have less coverage left.

Samsung 990 EVO — capacity-specific datasheet Samsung consumer SSD limited warranty — model, capacity and first limit

Check the exact configuration and source conditions for your use.

Earlier PCIe support

Samsung 990PCIe 3.0

Samsung 990 EVOPCIe Gen 3 x4 and Gen 4 x4

Sources

Samsung 990

Manufacturer specification · Data sheet footnote: backward compatible with PCIe 3.0. Host protocol and lane availability still determine actual operation and speed.

Samsung SSD 990 data sheet, revision 1.0 (linked from the UK MZ-V9V2T0BW page)

Samsung 990 EVO

Manufacturer specification · PDF backward compatibility. Host protocol and lane availability still determine actual operation.

Samsung SSD 990 data sheet, revision 1.0 (linked from the UK MZ-V9V2T0BW page)

Check the exact configuration and source conditions for your use.

Published power conditions

Samsung 9904.3 W average active read; 3.8 W average active write; 55 mW PS3 idle (APST on); 3 mW PS4 (L1.2)

Samsung 990 EVO5.5 W active read; 4.7 W active write; 60 mW PS3 idle; 5 mW PS4 sleep

Sources

Samsung 990

Manufacturer specification · 2 TB column. Active power measured with fio 3.28 on an Intel Core Ultra 7 265K / ASUS Maximus Z890 HERO / Ubuntu 22.04 system with 32 GB DDR5-4800, which differs from the speed test. These are not a constant everyday load.

Samsung 990 EVO

Manufacturer specification · 2 TB column. IOmeter 1.1.0, Ryzen 9 7950X / X670E Taichi, 32 GB DDR5-4800, Windows 11 Pro. Idle requires APST and sleep is L1.2. These are not a constant everyday load.

Samsung SSD 990 data sheet, revision 1.0 (linked from the UK MZ-V9V2T0BW page)

Check the exact configuration and source conditions for your use.

Missing or non-comparable evidence (10)

DRAM cache present

Samsung 990Not verified

Samsung 990 EVONot verified

Sources

Samsung 990

Samsung does not state this for this model. · Manufacturer specification · Samsung's tables specify HMB and do not state whether onboard DRAM is present. Host memory buffering is not onboard DRAM.

Samsung 990 EVO

Samsung does not state this for this model. · Manufacturer specification · Samsung's tables specify HMB and do not state whether onboard DRAM is present. Host memory buffering is not onboard DRAM.

Samsung 990 EVO — manufacturer specifications Samsung 990 EVO — capacity-specific datasheet

Evidence is missing or conflicting on at least one side. This is not a verified difference.

DRAM cache capacity

Samsung 990Not verified

Samsung 990 EVONot verified

Sources

Samsung 990

No source recorded for this side.

Samsung 990 EVO

Samsung does not state this for this model. · Manufacturer specification · Samsung does not list an onboard DRAM capacity. Host-memory use and TurboWrite buffer are distinct.

Samsung 990 EVO — manufacturer specifications Samsung 990 EVO — capacity-specific datasheet

Evidence is missing or conflicting on at least one side. This is not a verified difference.

NAND type

Samsung 990Not verified

Samsung 990 EVOSamsung V-NAND TLC

Sources

Samsung 990

Both reviewed exact technical sources say Samsung V-NAND without specifying the NAND cell type. TLC, QLC or another cell type is not established. Preserve the positive V-NAND technology separately. · Manufacturer specification

Samsung 990 — exact UK 2 TB MZ-V9V2T0BW specifications and features Samsung SSD 990 data sheet, revision 1.0 (linked from the UK MZ-V9V2T0BW page)

Samsung 990 EVO

Manufacturer specification · Manufacturer terminology.

Samsung 990 EVO — manufacturer specifications Samsung 990 EVO — capacity-specific datasheet

Evidence is missing or conflicting on at least one side. This is not a verified difference.

Rated random read, QD1

Samsung 990Not verified

Samsung 990 EVO20000 IOPS

Sources

Samsung 990

Samsung does not state this for this model. · Manufacturer specification · Samsung's 2 TB page and data sheet do not list QD1 results.

Samsung SSD 990 data sheet, revision 1.0 (linked from the UK MZ-V9V2T0BW page)

Samsung 990 EVO

Manufacturer specification · Manufacturer QD1 / one-thread 20000 IOPS under the same IOmeter/Ryzen/Windows setup, not measured application latency.

Samsung 990 EVO — manufacturer specifications Samsung 990 EVO — capacity-specific datasheet

Evidence is missing or conflicting on at least one side. This is not a verified difference.

Rated random write, QD1

Samsung 990Not verified

Samsung 990 EVO90000 IOPS

Sources

Samsung 990

Samsung does not state this for this model. · Manufacturer specification · Samsung's 2 TB page and data sheet do not list QD1 results.

Samsung SSD 990 data sheet, revision 1.0 (linked from the UK MZ-V9V2T0BW page)

Samsung 990 EVO

Manufacturer specification · Manufacturer QD1 / one-thread 90000 IOPS under the same IOmeter/Ryzen/Windows setup with TurboWrite active.

Samsung 990 EVO — manufacturer specifications Samsung 990 EVO — capacity-specific datasheet

Evidence is missing or conflicting on at least one side. This is not a verified difference.

Modern Standby support

Samsung 990Not verified

Samsung 990 EVOYes

Sources

Samsung 990

Samsung does not state this for this model. · Manufacturer specification · Samsung does not state Modern Standby support; device sleep is a separate feature.

Samsung 990 — exact UK 2 TB MZ-V9V2T0BW specifications and features

Samsung 990 EVO

Manufacturer specification · Official EVO feature block lists Modern Standby. Full platform and operating-system support is required.

Samsung 990 EVO — manufacturer specifications

Evidence is missing or conflicting on at least one side. This is not a verified difference.

NAND technology

Samsung 990Samsung V-NAND

Samsung 990 EVONot verified

Sources

Samsung 990

Manufacturer specification

Samsung 990 — exact UK 2 TB MZ-V9V2T0BW specifications and features Samsung SSD 990 data sheet, revision 1.0 (linked from the UK MZ-V9V2T0BW page)

Samsung 990 EVO

No source recorded for this side.

Evidence is missing or conflicting on at least one side. This is not a verified difference.

Advertised efficiency comparison

Samsung 990Up to 38% better sequential performance per watt than the 990 PRO (Samsung internal 2 TB test)

Samsung 990 EVONot verified

Sources

Samsung 990

Manufacturer specification · Samsung internal test: 990 at 1,686/1,697 MB/s per watt read/write versus 990 PRO at 1,221/1,254 MB/s per watt, 2 TB capacity, fio 3.28 on a Core Ultra 7 265K system. A manufacturer comparison, not a measured saving in any particular PC.

Samsung 990 — exact UK 2 TB MZ-V9V2T0BW specifications and features

Samsung 990 EVO

No source recorded for this side.

Evidence is missing or conflicting on at least one side. This is not a verified difference.

Published system-level power

Samsung 990Average read 4.3 W; average write 3.8 W

Samsung 990 EVONot verified

Sources

Samsung 990

Manufacturer specification · UK page 'Average Power Consumption (system level)'; actual power consumption may vary depending on system hardware and configuration.

Samsung 990 — exact UK 2 TB MZ-V9V2T0BW specifications and features

Samsung 990 EVO

No source recorded for this side.

Evidence is missing or conflicting on at least one side. This is not a verified difference.

Thermal design

Samsung 990Not verified

Samsung 990 EVOHeat-spreader label; Dynamic Thermal Guard

Sources

Samsung 990

No source recorded for this side.

Samsung 990 EVO

Manufacturer specification · Official feature block lists the label and thermal management. Samsung's 70% efficiency example uses 1 TB models, not this 2 TB drive.

Samsung 990 EVO — manufacturer specifications

Evidence is missing or conflicting on at least one side. This is not a verified difference.

26 shared fields have the same recorded value.

WHAT EACH CHOICE ASKS OF YOU

What it brings and what to check

Samsung 990

What it brings

Rated up to 7,250 MB/s sequential read and 6,450 MB/s sequential write, with up to 850K random read and 1.2 million random write IOPS at 2 TB.
Manufacturer source Manufacturer source
Samsung lists AES 256-bit encryption with TCG Opal 2.0 and IEEE 1667, a 3 mW PS4 sleep state, and Samsung Magician support for data transfer, drive health and firmware updates.
Manufacturer source Manufacturer source
Samsung claims up to 38% better sequential performance per watt than the 990 PRO in its own 2 TB test, and the drive is backward compatible with PCIe 3.0.
Manufacturer source Manufacturer source

What to check

The limited warranty is 3 years or 800 TB written, whichever comes first.
Manufacturer source Manufacturer source
Samsung specifies Host Memory Buffer caching and lists no onboard DRAM. Peak write figures use Intelligent TurboWrite, and no post-cache write speed is published.
Manufacturer source Manufacturer source
Capacities stop at 2 TB, and Samsung does not state the NAND cell type.
Manufacturer source

Samsung 990 EVO

What it brings

Rated up to 5,000 MB/s sequential read and 4,200 MB/s sequential write, with up to 700,000 random read and 800,000 random write IOPS.
Manufacturer source Manufacturer source
Runs over PCIe 4.0 x4 or PCIe 5.0 x2 and also works in PCIe 3.0 x4 slots, with TLC V-NAND and a five-year warranty covering up to 1,200 TB written.
Manufacturer source Manufacturer source Manufacturer source

What to check

Its PCIe 5.0 mode uses two lanes rather than four, and rated speeds top out at 5,000 MB/s read and 4,200 MB/s write.
Manufacturer source Manufacturer source
Samsung specifies Host Memory Buffer caching and lists no onboard DRAM for this drive. Peak write speed relies on the TurboWrite cache, and Samsung does not list a post-cache write speed for this model.
Manufacturer source Manufacturer source

COMPARE THE DETAILS

Full specifications

How we verify

Differences only

48 of 48 specifications Sources in each row

Source-backed specifications for Samsung 990 and Samsung 990 EVO
Specification	Samsung 990	Samsung 990 EVO

Capacity Sources Samsung 990 Manufacturer specification · Decimal capacity (1 GB = 1 billion bytes, IDEMA); formatted usable space is lower. Samsung 990 — exact UK 2 TB MZ-V9V2T0BW specifications and features Samsung SSD 990 data sheet, revision 1.0 (linked from the UK MZ-V9V2T0BW page) Samsung 990 EVO Manufacturer specification · Decimal capacity; formatting and system use reduce available space. Samsung 990 EVO — manufacturer specifications Samsung 990 EVO — capacity-specific datasheet	2000 GB	2000 GB
SSD / HDD Sources Samsung 990 Manufacturer specification Samsung 990 — exact UK 2 TB MZ-V9V2T0BW specifications and features Samsung 990 EVO Manufacturer specification Samsung 990 EVO — manufacturer specifications Samsung 990 EVO — capacity-specific datasheet	SSD	SSD
Interface and versionDifferent Sources Samsung 990 Manufacturer specification · Samsung states the 990 is backward compatible with PCIe 3.0. Host protocol and lane availability still determine actual operation. Samsung 990 — exact UK 2 TB MZ-V9V2T0BW specifications and features Samsung SSD 990 data sheet, revision 1.0 (linked from the UK MZ-V9V2T0BW page) Samsung 990 EVO Manufacturer specification · Host support and available lanes determine operation; interface generation is not an application-performance result. Samsung 990 EVO — manufacturer specifications Samsung 990 EVO — capacity-specific datasheet	PCIe 4.0 x4; NVMe	PCIe 4.0 x4 or PCIe 5.0 x2; NVMe
Form factor Sources Samsung 990 Manufacturer specification Samsung 990 — exact UK 2 TB MZ-V9V2T0BW specifications and features Samsung SSD 990 data sheet, revision 1.0 (linked from the UK MZ-V9V2T0BW page) Samsung 990 EVO Manufacturer specification · Match the physical format and electrical interface to the host. Samsung 990 EVO — manufacturer specifications Samsung 990 EVO — capacity-specific datasheet	M.2 2280	M.2 2280
Drive dimensions Sources Samsung 990 Samsung lists these as maximum dimensions. This version has no factory heatsink. · Manufacturer specification · Samsung lists maximum width × height × depth for the bare module. Samsung 990 — exact UK 2 TB MZ-V9V2T0BW specifications and features Samsung SSD 990 data sheet, revision 1.0 (linked from the UK MZ-V9V2T0BW page) Samsung 990 EVO Samsung lists these as maximum dimensions. This version has no factory heatsink. · Manufacturer specification · Datasheet maximum envelope; the product page's 80 × 22 mm figures are not labelled as maximum tolerances. Samsung 990 EVO — manufacturer specifications Samsung 990 EVO — capacity-specific datasheet	80.15 × 22.15 × 2.38 mm	80.15 × 22.15 × 2.38 mm
Earlier PCIe supportDifferent Sources Samsung 990 Manufacturer specification · Data sheet footnote: backward compatible with PCIe 3.0. Host protocol and lane availability still determine actual operation and speed. Samsung SSD 990 data sheet, revision 1.0 (linked from the UK MZ-V9V2T0BW page) Samsung 990 EVO Manufacturer specification · PDF backward compatibility. Host protocol and lane availability still determine actual operation. Samsung 990 EVO — capacity-specific datasheet	PCIe 3.0	PCIe Gen 3 x4 and Gen 4 x4
Factory heatsink Sources Samsung 990 Manufacturer specification · The UK specification lists a bare module with a maximum depth of 2.38 mm and no heatsink; the official gallery shows a bare module. A thermal label is not an enclosure. Samsung 990 — exact UK 2 TB MZ-V9V2T0BW specifications and features Samsung 990 EVO Manufacturer specification · This BW configuration has no factory heatsink; follow the host's cooling requirements. Samsung 990 EVO — manufacturer specifications Samsung 990 EVO — capacity-specific datasheet	No	No
Maximum drive weight Sources Samsung 990 Manufacturer specification · UK 2 TB specification maximum, not package mass or a measured sample. Samsung 990 — exact UK 2 TB MZ-V9V2T0BW specifications and features Samsung 990 EVO Manufacturer specification · UK 2 TB specification maximum, not package mass or a measured sample. Samsung 990 EVO — manufacturer specifications	9 g	9 g
Thermal design Sources Samsung 990 No source recorded. Samsung 990 EVO Manufacturer specification · Official feature block lists the label and thermal management. Samsung's 70% efficiency example uses 1 TB models, not this 2 TB drive. Samsung 990 EVO — manufacturer specifications	Not provided	Heat-spreader label; Dynamic Thermal Guard

Rated performance and conditionsDifferent Sources Samsung 990 Manufacturer specification · Manufacturer up-to claims measured with IOmeter 1.1.0, Ryzen 9 7950X, ASRock X670E Taichi, 32 GB DDR5-4800 and Windows 11 Pro. Secondary drive in a fan-cooled desktop; writes use Intelligent TurboWrite within a specific transfer size. Firmware, host and workload affect results; Samsung does not list a post-cache write speed. Samsung 990 — exact UK 2 TB MZ-V9V2T0BW specifications and features Samsung SSD 990 data sheet, revision 1.0 (linked from the UK MZ-V9V2T0BW page) Samsung 990 EVO Manufacturer specification · Manufacturer up-to claims measured with IOmeter 1.1.0, Ryzen 9 7950X, ASRock X670E Taichi, 32 GB DDR5-4800 and Windows 11 Pro. Secondary drive in a fan-cooled desktop; writes use Intelligent TurboWrite within its buffer. Firmware, host and workload affect results; Samsung does not list a post-cache write speed. Samsung 990 EVO — manufacturer specifications Samsung 990 EVO — capacity-specific datasheet	Up to 7250 MB/s sequential read; up to 6450 MB/s cached sequential write	Up to 5000 MB/s sequential read; up to 4200 MB/s cached sequential write
Rated sequential readDifferent Sources Samsung 990 Manufacturer specification · Manufacturer up-to claims measured with IOmeter 1.1.0, Ryzen 9 7950X, ASRock X670E Taichi, 32 GB DDR5-4800 and Windows 11 Pro. Secondary drive in a fan-cooled desktop; writes use Intelligent TurboWrite within a specific transfer size. Firmware, host and workload affect results; Samsung does not list a post-cache write speed. Samsung 990 — exact UK 2 TB MZ-V9V2T0BW specifications and features Samsung SSD 990 data sheet, revision 1.0 (linked from the UK MZ-V9V2T0BW page) Samsung 990 EVO Manufacturer specification · Manufacturer up-to claims measured with IOmeter 1.1.0, Ryzen 9 7950X, ASRock X670E Taichi, 32 GB DDR5-4800 and Windows 11 Pro. Secondary drive in a fan-cooled desktop; writes use Intelligent TurboWrite within its buffer. Firmware, host and workload affect results; Samsung does not list a post-cache write speed. Samsung 990 EVO — capacity-specific datasheet	7250 MB/s	5000 MB/s
Rated sequential writeDifferent Sources Samsung 990 Manufacturer specification · Manufacturer up-to claims measured with IOmeter 1.1.0, Ryzen 9 7950X, ASRock X670E Taichi, 32 GB DDR5-4800 and Windows 11 Pro. Secondary drive in a fan-cooled desktop; writes use Intelligent TurboWrite within a specific transfer size. Firmware, host and workload affect results; Samsung does not list a post-cache write speed. Samsung 990 — exact UK 2 TB MZ-V9V2T0BW specifications and features Samsung SSD 990 data sheet, revision 1.0 (linked from the UK MZ-V9V2T0BW page) Samsung 990 EVO Manufacturer specification · Manufacturer up-to claims measured with IOmeter 1.1.0, Ryzen 9 7950X, ASRock X670E Taichi, 32 GB DDR5-4800 and Windows 11 Pro. Secondary drive in a fan-cooled desktop; writes use Intelligent TurboWrite within its buffer. Firmware, host and workload affect results; Samsung does not list a post-cache write speed. Samsung 990 EVO — capacity-specific datasheet	6450 MB/s	4200 MB/s
Rated random readDifferent Sources Samsung 990 Manufacturer specification · Manufacturer up-to claim for the 2 TB column (queue depth and block size not stated in the datasheet). IOmeter 1.1.0, Ryzen 9 7950X / X670E Taichi, 32 GB DDR5-4800, Windows 11 Pro, fan-cooled secondary drive; write results use Intelligent TurboWrite. Samsung 990 — exact UK 2 TB MZ-V9V2T0BW specifications and features Samsung SSD 990 data sheet, revision 1.0 (linked from the UK MZ-V9V2T0BW page) Samsung 990 EVO Manufacturer specification · Manufacturer up-to claim, 4 KB QD32 / 16 threads. IOmeter 1.1.0, Ryzen 9 7950X / X670E Taichi, 32 GB DDR5-4800, Windows 11 Pro, fan-cooled secondary drive; write results require TurboWrite. Samsung 990 EVO — manufacturer specifications Samsung 990 EVO — capacity-specific datasheet	850000 IOPS	700000 IOPS
Rated random writeDifferent Sources Samsung 990 Manufacturer specification · Manufacturer up-to claim for the 2 TB column (queue depth and block size not stated in the datasheet). IOmeter 1.1.0, Ryzen 9 7950X / X670E Taichi, 32 GB DDR5-4800, Windows 11 Pro, fan-cooled secondary drive; write results use Intelligent TurboWrite. Samsung 990 — exact UK 2 TB MZ-V9V2T0BW specifications and features Samsung SSD 990 data sheet, revision 1.0 (linked from the UK MZ-V9V2T0BW page) Samsung 990 EVO Manufacturer specification · Manufacturer up-to claim, 4 KB QD32 / 16 threads. IOmeter 1.1.0, Ryzen 9 7950X / X670E Taichi, 32 GB DDR5-4800, Windows 11 Pro, fan-cooled secondary drive; write results require TurboWrite. Samsung 990 EVO — manufacturer specifications Samsung 990 EVO — capacity-specific datasheet	1200000 IOPS	800000 IOPS
Rated random read, QD1 Sources Samsung 990 Samsung does not state this for this model. · Manufacturer specification · Samsung's 2 TB page and data sheet do not list QD1 results. Samsung SSD 990 data sheet, revision 1.0 (linked from the UK MZ-V9V2T0BW page) Samsung 990 EVO Manufacturer specification · Manufacturer QD1 / one-thread 20000 IOPS under the same IOmeter/Ryzen/Windows setup, not measured application latency. Samsung 990 EVO — manufacturer specifications Samsung 990 EVO — capacity-specific datasheet	Not listed by the manufacturer	20000 IOPS
Rated random write, QD1 Sources Samsung 990 Samsung does not state this for this model. · Manufacturer specification · Samsung's 2 TB page and data sheet do not list QD1 results. Samsung SSD 990 data sheet, revision 1.0 (linked from the UK MZ-V9V2T0BW page) Samsung 990 EVO Manufacturer specification · Manufacturer QD1 / one-thread 90000 IOPS under the same IOmeter/Ryzen/Windows setup with TurboWrite active. Samsung 990 EVO — manufacturer specifications Samsung 990 EVO — capacity-specific datasheet	Not listed by the manufacturer	90000 IOPS

NAND type Sources Samsung 990 Both reviewed exact technical sources say Samsung V-NAND without specifying the NAND cell type. TLC, QLC or another cell type is not established. Preserve the positive V-NAND technology separately. · Manufacturer specification Samsung 990 — exact UK 2 TB MZ-V9V2T0BW specifications and features Samsung SSD 990 data sheet, revision 1.0 (linked from the UK MZ-V9V2T0BW page) Samsung 990 EVO Manufacturer specification · Manufacturer terminology. Samsung 990 EVO — manufacturer specifications Samsung 990 EVO — capacity-specific datasheet	Not listed by the manufacturer	Samsung V-NAND TLC
Cache arrangement Sources Samsung 990 Manufacturer specification Samsung 990 — exact UK 2 TB MZ-V9V2T0BW specifications and features Samsung SSD 990 data sheet, revision 1.0 (linked from the UK MZ-V9V2T0BW page) Samsung 990 EVO Manufacturer specification · HMB uses host memory; it is not a stated onboard DRAM capacity. Samsung 990 EVO — manufacturer specifications Samsung 990 EVO — capacity-specific datasheet	Host Memory Buffer (HMB)	Host Memory Buffer (HMB)
Controller Sources Samsung 990 Manufacturer specification · Samsung does not give a codename, stepping or process node. Samsung 990 — exact UK 2 TB MZ-V9V2T0BW specifications and features Samsung SSD 990 data sheet, revision 1.0 (linked from the UK MZ-V9V2T0BW page) Samsung 990 EVO Manufacturer specification · Samsung does not give a codename, stepping or process node. Samsung 990 EVO — capacity-specific datasheet	Samsung in-house controller	Samsung in-house controller
Write-buffer technology Sources Samsung 990 Manufacturer specification · Manufacturer write caching is active for peak write claims and operates only within a specific data transfer size. Samsung does not list the buffer capacity or post-cache write speed for this 2 TB model. Samsung 990 — exact UK 2 TB MZ-V9V2T0BW specifications and features Samsung SSD 990 data sheet, revision 1.0 (linked from the UK MZ-V9V2T0BW page) Samsung 990 EVO Manufacturer specification · Manufacturer write caching is active for peak claims. Samsung does not list the buffer capacity or post-cache write speed for this 2 TB model. Samsung 990 EVO — manufacturer specifications Samsung 990 EVO — capacity-specific datasheet	Intelligent TurboWrite	Intelligent TurboWrite
NAND technology Sources Samsung 990 Manufacturer specification Samsung 990 — exact UK 2 TB MZ-V9V2T0BW specifications and features Samsung SSD 990 data sheet, revision 1.0 (linked from the UK MZ-V9V2T0BW page) Samsung 990 EVO No source recorded.	Samsung V-NAND	Not provided

Warranty terms and endurance if applicableDifferent Sources Samsung 990 Manufacturer specification Samsung 990 — exact UK 2 TB MZ-V9V2T0BW specifications and features Samsung SSD 990 data sheet, revision 1.0 (linked from the UK MZ-V9V2T0BW page) Samsung 990 EVO Manufacturer specification · Manufacturer coverage is subject to purchase eligibility and applicable terms. A used drive may have less coverage left. Samsung 990 EVO — capacity-specific datasheet Samsung consumer SSD limited warranty — model, capacity and first limit	3 years or 800 TB written, whichever comes first; limited-warranty terms apply	5 years or 1200 TB written, whichever comes first; limited-warranty terms apply
Limited warranty timeDifferent Sources Samsung 990 Manufacturer specification · Time limit, not a lifespan prediction. Coverage also ends at the TBW threshold; eligibility and full terms apply. Samsung 990 — exact UK 2 TB MZ-V9V2T0BW specifications and features Samsung SSD 990 data sheet, revision 1.0 (linked from the UK MZ-V9V2T0BW page) Samsung 990 EVO Manufacturer specification · Time limit, not predicted lifespan; coverage also ends at the TBW threshold and is subject to full terms. Samsung 990 EVO — capacity-specific datasheet Samsung consumer SSD limited warranty — model, capacity and first limit	3 years	5 years
Warranty write thresholdDifferent Sources Samsung 990 Manufacturer specification · Warranty write threshold for the 2 TB capacity (1 TB model: 400 TB), in compliance with JESD218; not a guaranteed failure point. Samsung 990 — exact UK 2 TB MZ-V9V2T0BW specifications and features Samsung SSD 990 data sheet, revision 1.0 (linked from the UK MZ-V9V2T0BW page) Samsung 990 EVO Manufacturer specification · Capacity-specific warranty write threshold, not a guaranteed failure point. Samsung 990 EVO — capacity-specific datasheet Samsung consumer SSD limited warranty — model, capacity and first limit	800 TB	1200 TB
Manufacturer application scope Sources Samsung 990 Manufacturer specification · Manufacturer application class; no enterprise or console installation guarantee. Samsung 990 — exact UK 2 TB MZ-V9V2T0BW specifications and features Samsung SSD 990 data sheet, revision 1.0 (linked from the UK MZ-V9V2T0BW page) Samsung 990 EVO Manufacturer specification · Manufacturer application class; no enterprise or console installation guarantee. Samsung 990 EVO — capacity-specific datasheet	Client PCs	Client PCs
Manufacturer MTBF rating Sources Samsung 990 Manufacturer specification · Statistical manufacturer claim, not individual lifespan or guaranteed operating time. Samsung 990 — exact UK 2 TB MZ-V9V2T0BW specifications and features Samsung SSD 990 data sheet, revision 1.0 (linked from the UK MZ-V9V2T0BW page) Samsung 990 EVO Manufacturer specification · Statistical manufacturer claim, not individual lifespan or guaranteed operating time. Samsung 990 EVO — capacity-specific datasheet	1,500,000 hours	1,500,000 hours

Hardware encryption support Sources Samsung 990 Manufacturer specification · Listed security capabilities do not mean encryption is enabled or supported by every host. Samsung 990 — exact UK 2 TB MZ-V9V2T0BW specifications and features Samsung SSD 990 data sheet, revision 1.0 (linked from the UK MZ-V9V2T0BW page) Samsung 990 EVO Manufacturer specification · Listed security capabilities do not mean encryption is enabled or supported by every host. Samsung 990 EVO — capacity-specific datasheet	AES-256; TCG Opal 2.0; IEEE 1667	AES-256; TCG Opal 2.0; IEEE 1667
TRIM support Sources Samsung 990 Manufacturer specification · Manufacturer requires operating-system support; the host path must also support it. Samsung 990 — exact UK 2 TB MZ-V9V2T0BW specifications and features Samsung SSD 990 data sheet, revision 1.0 (linked from the UK MZ-V9V2T0BW page) Samsung 990 EVO Manufacturer specification · Manufacturer requires operating-system support; the enclosure/host path must also support it. Samsung 990 EVO — capacity-specific datasheet	Yes	Yes
S.M.A.R.T. support Sources Samsung 990 Manufacturer specification · Manufacturer monitoring capability, not a remaining-lifespan guarantee. Samsung 990 — exact UK 2 TB MZ-V9V2T0BW specifications and features Samsung 990 EVO Manufacturer specification · Manufacturer monitoring capability, not a remaining-lifespan guarantee. Samsung 990 EVO — capacity-specific datasheet	Yes	Yes
Garbage collection Sources Samsung 990 Manufacturer specification · Internal function, not a measured performance uplift. Samsung 990 — exact UK 2 TB MZ-V9V2T0BW specifications and features Samsung 990 EVO Manufacturer specification · Internal function, not a measured performance uplift. Samsung 990 EVO — capacity-specific datasheet	Yes	Yes
Drive management software Sources Samsung 990 Manufacturer specification · UK feature block: data transfer, drive-health tracking and firmware updates. Check the current software version and its requirements. Samsung 990 — exact UK 2 TB MZ-V9V2T0BW specifications and features Samsung 990 EVO Manufacturer specification · Current feature block lists migration, drive health and firmware updates. Check the current software version and its requirements. Samsung 990 EVO — manufacturer specifications	Samsung Magician	Samsung Magician
Installation kit included Sources Samsung 990 Manufacturer specification · UK page says installation kit not available; no supplied screw or host heatsink is assumed. Samsung 990 — exact UK 2 TB MZ-V9V2T0BW specifications and features Samsung 990 EVO Manufacturer specification · UK page says installation kit not available; no supplied screw or host heatsink is assumed. Samsung 990 EVO — manufacturer specifications	No	No
World Wide Name support Sources Samsung 990 Manufacturer specification · Product page states WWN is not supported. Samsung 990 — exact UK 2 TB MZ-V9V2T0BW specifications and features Samsung 990 EVO Manufacturer specification · Product page states WWN is not supported. Samsung 990 EVO — manufacturer specifications	No	No
Device sleep support Sources Samsung 990 Manufacturer specification · The UK page lists device sleep mode support. Host support is required; device sleep is not the same as Modern Standby and gives no battery-life figure. Samsung 990 — exact UK 2 TB MZ-V9V2T0BW specifications and features Samsung 990 EVO Manufacturer specification · The UK page supports device sleep. Host support is required; device sleep is not the same as Modern Standby and gives no battery-life figure. Samsung 990 EVO — manufacturer specifications	Yes	Yes
Modern Standby support Sources Samsung 990 Samsung does not state this for this model. · Manufacturer specification · Samsung does not state Modern Standby support; device sleep is a separate feature. Samsung 990 — exact UK 2 TB MZ-V9V2T0BW specifications and features Samsung 990 EVO Manufacturer specification · Official EVO feature block lists Modern Standby. Full platform and operating-system support is required. Samsung 990 EVO — manufacturer specifications	Not listed by the manufacturer	Yes
Included cloning softwareDifferent Sources Samsung 990 Manufacturer specification · The UK feature block says Magician can transfer data. Check software version, operating-system support and migration requirements. Samsung 990 — exact UK 2 TB MZ-V9V2T0BW specifications and features Samsung 990 EVO Manufacturer specification · The UK feature page advertises data migration through Samsung Magician. Check software version, operating-system support and migration requirements. Samsung 990 EVO — manufacturer specifications	Samsung Magician data transfer	Samsung Magician data migration

Published power conditionsDifferent Sources Samsung 990 Manufacturer specification · 2 TB column. Active power measured with fio 3.28 on an Intel Core Ultra 7 265K / ASUS Maximus Z890 HERO / Ubuntu 22.04 system with 32 GB DDR5-4800, which differs from the speed test. These are not a constant everyday load. Samsung SSD 990 data sheet, revision 1.0 (linked from the UK MZ-V9V2T0BW page) Samsung 990 EVO Manufacturer specification · 2 TB column. IOmeter 1.1.0, Ryzen 9 7950X / X670E Taichi, 32 GB DDR5-4800, Windows 11 Pro. Idle requires APST and sleep is L1.2. These are not a constant everyday load. Samsung 990 EVO — capacity-specific datasheet	4.3 W average active read; 3.8 W average active write; 55 mW PS3 idle (APST on); 3 mW PS4 (L1.2)	5.5 W active read; 4.7 W active write; 60 mW PS3 idle; 5 mW PS4 sleep
Published system-level power Sources Samsung 990 Manufacturer specification · UK page 'Average Power Consumption (system level)'; actual power consumption may vary depending on system hardware and configuration. Samsung 990 — exact UK 2 TB MZ-V9V2T0BW specifications and features Samsung 990 EVO No source recorded.	Average read 4.3 W; average write 3.8 W	Not provided
Operating temperature Sources Samsung 990 Manufacturer specification · 0–70 °C is the S.M.A.R.T. operating temperature with airflow recommended, not an independent cooling measurement. Samsung 990 — exact UK 2 TB MZ-V9V2T0BW specifications and features Samsung SSD 990 data sheet, revision 1.0 (linked from the UK MZ-V9V2T0BW page) Samsung 990 EVO Manufacturer specification · Measured by the drive's S.M.A.R.T. temperature; Samsung recommends adequate airflow. Samsung 990 EVO — manufacturer specifications Samsung 990 EVO — capacity-specific datasheet	0–70 °C	0–70 °C
Storage temperature Sources Samsung 990 Manufacturer specification · Non-operating range, distinct from operation. Samsung SSD 990 data sheet, revision 1.0 (linked from the UK MZ-V9V2T0BW page) Samsung 990 EVO Manufacturer specification · Non-operating range, distinct from operation. Samsung 990 EVO — capacity-specific datasheet	−40–85 °C	−40–85 °C
Humidity range Sources Samsung 990 Manufacturer specification · Manufacturer specifies non-condensing conditions. This environmental range is not waterproofing or an IP rating. Samsung SSD 990 data sheet, revision 1.0 (linked from the UK MZ-V9V2T0BW page) Samsung 990 EVO Manufacturer specification · Manufacturer specifies non-condensing conditions. This environmental range is not waterproofing or an IP rating. Samsung 990 EVO — capacity-specific datasheet	5–95%	5–95%
Non-operating shock rating Sources Samsung 990 Manufacturer specification · Manufacturer non-operating claim, not a device drop test. Samsung 990 — exact UK 2 TB MZ-V9V2T0BW specifications and features Samsung SSD 990 data sheet, revision 1.0 (linked from the UK MZ-V9V2T0BW page) Samsung 990 EVO Manufacturer specification · Manufacturer non-operating claim, not a device drop test. Samsung 990 EVO — capacity-specific datasheet	1500 G; 0.5 ms; three axes	1500 G; 0.5 ms; three axes
Non-operating vibration rating Sources Samsung 990 Manufacturer specification · Manufacturer test range; results from different test protocols are not directly comparable. Samsung SSD 990 data sheet, revision 1.0 (linked from the UK MZ-V9V2T0BW page) Samsung 990 EVO Manufacturer specification · Manufacturer test range; results from different test protocols are not directly comparable. Samsung 990 EVO — capacity-specific datasheet	20 G; 20–2000 Hz	20 G; 20–2000 Hz
Allowable supply voltage Sources Samsung 990 Manufacturer specification · Product voltage range. Check the host slot is compatible. Samsung 990 — exact UK 2 TB MZ-V9V2T0BW specifications and features Samsung 990 EVO Manufacturer specification · Product voltage range. Check the host slot is compatible. Samsung 990 EVO — manufacturer specifications	3.3 V ±5%	3.3 V ±5%
Advertised efficiency comparison Sources Samsung 990 Manufacturer specification · Samsung internal test: 990 at 1,686/1,697 MB/s per watt read/write versus 990 PRO at 1,221/1,254 MB/s per watt, 2 TB capacity, fio 3.28 on a Core Ultra 7 265K system. A manufacturer comparison, not a measured saving in any particular PC. Samsung 990 — exact UK 2 TB MZ-V9V2T0BW specifications and features Samsung 990 EVO No source recorded.	Up to 38% better sequential performance per watt than the 990 PRO (Samsung internal 2 TB test)	Not provided

NVMe interface protocol version Sources Samsung 990 Manufacturer specification Samsung 990 — exact UK 2 TB MZ-V9V2T0BW specifications and features Samsung SSD 990 data sheet, revision 1.0 (linked from the UK MZ-V9V2T0BW page) Samsung 990 EVO Manufacturer specification Samsung 990 EVO — manufacturer specifications Samsung 990 EVO — capacity-specific datasheet	2.0	2.0

Show unverified (2)Not verified, not provided or conflicting for both products. Kept for completeness; never counted as a difference.

Specifications without verified values for either product
DRAM cache present Sources Samsung 990 Samsung does not state this for this model. · Manufacturer specification · Samsung's tables specify HMB and do not state whether onboard DRAM is present. Host memory buffering is not onboard DRAM. Samsung SSD 990 data sheet, revision 1.0 (linked from the UK MZ-V9V2T0BW page) Samsung 990 EVO Samsung does not state this for this model. · Manufacturer specification · Samsung's tables specify HMB and do not state whether onboard DRAM is present. Host memory buffering is not onboard DRAM. Samsung 990 EVO — manufacturer specifications Samsung 990 EVO — capacity-specific datasheet	Not listed by the manufacturer	Not listed by the manufacturer
DRAM cache capacity Sources Samsung 990 No source recorded. Samsung 990 EVO Samsung does not state this for this model. · Manufacturer specification · Samsung does not list an onboard DRAM capacity. Host-memory use and TurboWrite buffer are distinct. Samsung 990 EVO — manufacturer specifications Samsung 990 EVO — capacity-specific datasheet	Not provided	Not listed by the manufacturer

First product manufacturer source Second product manufacturer source

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