Samsung 860 PRO SATA 2.5" SSD 256GBUK MZ-76P256B/EU · 256 GB- Nominal capacity
- 256 GBThis one: 250 GB
STORAGE
Samsung 870 EVO SATA 2.5” SSD 250GB
UK MZ-77E250B/EU · Black · 250 GB
- Nominal capacity
- 250 GB
- Storage device type
- SSD
- Form factor
- 2.5 inch
Samsung’s 870 EVO SATA 2.5” SSD 250GB in the exact UK MZ-77E250B/EU configuration. Capacity, interface, form factor and rated performance refer to this exact storage configuration.
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THE ACTUAL PRODUCT
Compare with Samsung 860 PRO SATA 2.5" SSD 256GB
Specifications checked 17 Oct 2026Manufacturer specifications, not a hands-on test.
The nearest checked drives by key specifications, with what differs from the Samsung 870 EVO SATA 2.5” SSD 250GB. The first matches the Compare button above.
Samsung 860 PRO SATA 2.5" SSD 256GBUK MZ-76P256B/EU · 256 GB
Samsung 870 EVO SATA 2.5” SSD 500GBUK MZ-77E500B/EU · Black · 500 GB- Nominal capacity
- 500 GBThis one: 250 GB
Samsung 870 EVO SATA 2.5” SSD 2TBUK MZ-77E2T0B/EU · Black · 2 TB- Nominal capacity
- 2000 GBThis one: 250 GB
Key strengths
The manufacturer lists nominal capacity: 250.0.
The exact UK manufacturer identifier MZ-77E250B/EU distinguishes this configuration from other models and bundles.
Before you buy
Published performance and battery figures are manufacturer claims. Actual results depend on configuration, settings and use; an unlisted feature or condition remains unknown.
Every specification. With its source.
Full specifications
Exact configuration: UK MZ-77E250B/EU · Black · 250 GB
33 specifications in 7 groups. Values are manufacturer specifications unless a row says “Measured result” or “Calculated from cited specifications”. 4 rows repeat listed facts in the manufacturer’s own wording, kept under “Manufacturer wording”.
Capacity & format
11 items
- Nominal capacity
- 250 GB
Manufacturer capacity: 250 GB (1 GB=1 Billion byte by IDEMA) * Actual usable capacity may be less (due to formatting, partitioning, operating system, applications or otherwise). Decimal TB converted to GB where needed; formatted usable capacity is lower.
Source - Storage device type
- SSDSource
- Form factor
- 2.5 inchSource
- Interface
- SATA 6 Gb/s Interface, compatible with SATA 3 Gb/s & SATA 1.5 Gb/s interfaceSource
- Dimensions
- 100 X 69.85 X 6.8 (mm)Source
- General Feature — Capacity
- 250 GB (1 GB=1 Billion byte by IDEMA) * Actual usable capacity may be less (due to formatting, partitioning, operating system, applications or otherwise)
Manufacturer claim in the exact MZ-77E250B/EU specification. Source wording, unit and scope retained; unlisted conditions remain unknown.
Source - General Feature — Weight
- Apporx. 45.0g Weight
Manufacturer claim in the exact MZ-77E250B/EU specification. Source wording, unit and scope retained; unlisted conditions remain unknown.
Source - General Feature — Storage Memory
- Samsung V-NAND 3bit MLC
Manufacturer claim in the exact MZ-77E250B/EU specification. Source wording, unit and scope retained; unlisted conditions remain unknown.
Source - General Feature — Controller
- Samsung MKX Controller
Manufacturer claim in the exact MZ-77E250B/EU specification. Source wording, unit and scope retained; unlisted conditions remain unknown.
Source - General Feature — Cache Memory
- Samsung 512 MB Low Power DDR4 SDRAM
Manufacturer claim in the exact MZ-77E250B/EU specification. Source wording, unit and scope retained; unlisted conditions remain unknown.
Source - Accessories — Installation Kit
- Not Available
Manufacturer claim in the exact MZ-77E250B/EU specification. Source wording, unit and scope retained; unlisted conditions remain unknown.
Source
Manufacturer wording (3)
The same facts in the manufacturer’s combined or original wording, each with its source.
- General Feature — Form Factor
- 2.5 inch
Manufacturer claim in the exact MZ-77E250B/EU specification. Source wording, unit and scope retained; unlisted conditions remain unknown.
Source - General Feature — Interface
- SATA 6 Gb/s Interface, compatible with SATA 3 Gb/s & SATA 1.5 Gb/s interface
Manufacturer claim in the exact MZ-77E250B/EU specification. Source wording, unit and scope retained; unlisted conditions remain unknown.
Source - General Feature — Dimension (WxHxD)
- 100 X 69.85 X 6.8 (mm)
Manufacturer claim in the exact MZ-77E250B/EU specification. Source wording, unit and scope retained; unlisted conditions remain unknown.
Source
Performance
7 items
- Rated performance and conditions
- Up to 560 MB/s Sequential Read * Performance may vary based on system hardware & configuration (Sequential Read); Up to 530 MB/s Sequential Write * Performance may vary based on system hardware & configuration ** Measured with Intelligent TurboWrite technology being activated (Sequential Write); Up to 98,000 IOPS Random Read * Performance may vary based on system hardware & configuration ** Measured with Intelligent TurboWrite technology being activated (Random Read (4 KB, QD32)); Up to 88,000 IOPS Random Write * Performance may vary based on system hardware & configuration ** Measured with Intelligent TurboWrite technology being activated (Random Write (4KB, QD32)); Up to 13,000 IOPS Random Read * Performance may vary based on system hardware & configuration ** Measured with Intelligent TurboWrite technology being activated (Random Read (4 KB, QD1)); Up to 36,000 IOPS Random Write * Performance may vary based on system hardware & configuration ** Measured with Intelligent TurboWrite technology being activated (Random Write (4 KB, QD1))
Manufacturer performance claims; supplied test conditions/maximum wording retained. Not an independent benchmark. Manufacturer claim in the exact MZ-77E250B/EU specification. Source wording, unit and scope retained; unlisted conditions remain unknown. Manufacturer section: Performance. Source field: Sequential Read. Manufacturer claim in the exact MZ-77E250B/EU specification. Source wording, unit and scope retained; unlisted conditions remain unknown. Manufacturer section: Performance. Source field: Sequential Write. Manufacturer claim in the exact MZ-77E250B/EU specification. Source wording, unit and scope retained; unlisted conditions remain unknown. Manufacturer section: Performance. Source field: Random Read (4 KB, QD32). Manufacturer claim in the exact MZ-77E250B/EU specification. Source wording, unit and scope retained; unlisted conditions remain unknown. Manufacturer section: Performance. Source field: Random Write (4KB, QD32). Manufacturer claim in the exact MZ-77E250B/EU specification. Source wording, unit and scope retained; unlisted conditions remain unknown. Manufacturer section: Performance. Source field: Random Read (4 KB, QD1). Manufacturer claim in the exact MZ-77E250B/EU specification. Source wording, unit and scope retained; unlisted conditions remain unknown. Manufacturer section: Performance. Source field: Random Write (4 KB, QD1).
Source - Performance — Sequential Read
- Up to 560 MB/s Sequential Read * Performance may vary based on system hardware & configuration
Manufacturer claim in the exact MZ-77E250B/EU specification. Source wording, unit and scope retained; unlisted conditions remain unknown.
Source - Performance — Sequential Write
- Up to 530 MB/s Sequential Write * Performance may vary based on system hardware & configuration ** Measured with Intelligent TurboWrite technology being activated
Manufacturer claim in the exact MZ-77E250B/EU specification. Source wording, unit and scope retained; unlisted conditions remain unknown.
Source - Performance — Random Read (4 KB, QD32)
- Up to 98,000 IOPS Random Read * Performance may vary based on system hardware & configuration ** Measured with Intelligent TurboWrite technology being activated
Manufacturer claim in the exact MZ-77E250B/EU specification. Source wording, unit and scope retained; unlisted conditions remain unknown.
Source - Performance — Random Write (4KB, QD32)
- Up to 88,000 IOPS Random Write * Performance may vary based on system hardware & configuration ** Measured with Intelligent TurboWrite technology being activated
Manufacturer claim in the exact MZ-77E250B/EU specification. Source wording, unit and scope retained; unlisted conditions remain unknown.
Source - Performance — Random Read (4 KB, QD1)
- Up to 13,000 IOPS Random Read * Performance may vary based on system hardware & configuration ** Measured with Intelligent TurboWrite technology being activated
Manufacturer claim in the exact MZ-77E250B/EU specification. Source wording, unit and scope retained; unlisted conditions remain unknown.
Source - Performance — Random Write (4 KB, QD1)
- Up to 36,000 IOPS Random Write * Performance may vary based on system hardware & configuration ** Measured with Intelligent TurboWrite technology being activated
Manufacturer claim in the exact MZ-77E250B/EU specification. Source wording, unit and scope retained; unlisted conditions remain unknown.
Source
Endurance & warranty
2 items
- Manufacturer warranty and endurance
- 5 Years Limited Warranty or 150 TBW Limited WarrantySource
- Environment — Reliability (MTBF)
- 1.5 Million Hours Reliability (MTBF)
Manufacturer claim in the exact MZ-77E250B/EU specification. Source wording, unit and scope retained; unlisted conditions remain unknown.
Source
Manufacturer wording (1)
The same facts in the manufacturer’s combined or original wording, each with its source.
- Warranty
- 5 Years Limited Warranty or 150 TBW Limited Warranty
Manufacturer claim in the exact MZ-77E250B/EU specification. Source wording, unit and scope retained; unlisted conditions remain unknown.
Source
Power
4 items
- Special Feature — Device Sleep Mode Support
- Yes
Manufacturer claim in the exact MZ-77E250B/EU specification. Source wording, unit and scope retained; unlisted conditions remain unknown.
Source - Environment — Average Power Consumption (system level)
- Average: 2.2 W *Maximum: 3.5 W (Burst mode)* Actual power consumption may vary depending on system hardware & configuration
Manufacturer claim in the exact MZ-77E250B/EU specification. Source wording, unit and scope retained; unlisted conditions remain unknown.
Source - Environment — Power consumption (Idle)
- Max. 30 mW * Actual power consumption may vary depending on system hardware & configuration
Manufacturer claim in the exact MZ-77E250B/EU specification. Source wording, unit and scope retained; unlisted conditions remain unknown.
Source - Environment — Allowable Voltage
- 5V ± 5% Allowable voltage
Manufacturer claim in the exact MZ-77E250B/EU specification. Source wording, unit and scope retained; unlisted conditions remain unknown.
Source
Features & software
6 items
- Special Feature — TRIM Support
- TRIM Supported
Manufacturer claim in the exact MZ-77E250B/EU specification. Source wording, unit and scope retained; unlisted conditions remain unknown.
Source - Special Feature — S.M.A.R.T Support
- S.M.A.R.T Supported
Manufacturer claim in the exact MZ-77E250B/EU specification. Source wording, unit and scope retained; unlisted conditions remain unknown.
Source - Special Feature — GC (Garbage Collection)
- Auto Garbage Collection Algorithm
Manufacturer claim in the exact MZ-77E250B/EU specification. Source wording, unit and scope retained; unlisted conditions remain unknown.
Source - Special Feature — Encryption Support
- AES 256-bit Encryption (Class 0),TCG/Opal, IEEE1667 (Encrypted drive)
Manufacturer claim in the exact MZ-77E250B/EU specification. Source wording, unit and scope retained; unlisted conditions remain unknown.
Source - Special Feature — WWN Support
- World Wide Name supported
Manufacturer claim in the exact MZ-77E250B/EU specification. Source wording, unit and scope retained; unlisted conditions remain unknown.
Source - Software — Management SW
- Magician Software for SSD management, Data Migration Software for SSD upgrade
Manufacturer claim in the exact MZ-77E250B/EU specification. Source wording, unit and scope retained; unlisted conditions remain unknown.
Source
Environment & reliability
2 items
- Environment — Operating Temperature
- 0 - 70 ℃ Operating Temperature
Manufacturer claim in the exact MZ-77E250B/EU specification. Source wording, unit and scope retained; unlisted conditions remain unknown.
Source - Environment — Shock
- 1,500 G & 0.5 ms (Half sine)
Manufacturer claim in the exact MZ-77E250B/EU specification. Source wording, unit and scope retained; unlisted conditions remain unknown.
Source
Compatibility & box
1 item
- General Feature — Application
- Client PCs
Manufacturer claim in the exact MZ-77E250B/EU specification. Source wording, unit and scope retained; unlisted conditions remain unknown.
Source
Compare with another drive
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Samsung 870 QVO SATA 2.5” SSD 4TBUK MZ-77Q4T0BW · Black · 4 TBCompare the two 
Samsung 860 PRO SATA 2.5" SSD 512GBUK MZ-76P512B/EU · 512 GBCompare the two 
Samsung 860 PRO SATA 2.5" SSD 1TBUK MZ-76P1T0B/EU · 1 TBCompare the two 
Samsung 860 PRO SATA 2.5" SSD 2TBUK MZ-76P2T0B/EU · 2 TBCompare the two