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PROCESSORS

AMD Ryzen 9 5900XT

Boxed, no cooler · part 100-100001581WOF

CPU cores
16
Thread count
32
Maximum boost clock
4.8 GHz

A 16-core, 32-thread Zen 3 processor for AM4 with up to 4.8 GHz boost, 64 MB of L3 cache and a 105 W TDP. Despite the similar name, it has four more cores than the 12-core 5900X. The boxed version has no cooler or integrated graphics.

Prices & buying options

UK
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US
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Price history · UK
eBay UKnew · GBP

Item price · same listing and exact model

Latest check£333.72
Lowest shown£333.72

21 observed days · 27 Sept–17 Oct

eBay UK observed item prices21 observed days. Last checked price per UTC day. Missing dates break the line. Use Explore dates or the table for exact values.
£333.7217 Oct, 12:02 UTC

Last recorded item price per UTC day. Delivery and tax are excluded. Gaps mean no recorded check. Past prices do not confirm current availability; this is not a market-wide price history.

View recorded prices
Exact listing · eBay UK · GBP
Checked (UTC)Item price
£346.20
£346.32
£346.44
£346.50
£333.72
£333.72
£333.72
£333.72
£333.72
£333.72
£333.72
£333.72
£333.72
£333.72
£333.72
£333.72
£333.72
£333.72
£333.72
£333.72
£333.72
Price history · US
eBay USnew · USD

Item price · same listing and exact model

Latest check$435.90
Lowest shown$435.90

21 observed days · 27 Sept–17 Oct

eBay US observed item prices21 observed days. Last checked price per UTC day. Missing dates break the line. Use Explore dates or the table for exact values.
$435.9017 Oct, 12:02 UTC

Last recorded item price per UTC day. Delivery and tax are excluded. Gaps mean no recorded check. Past prices do not confirm current availability; this is not a market-wide price history.

View recorded prices
Exact listing · eBay US · USD
Checked (UTC)Item price
$444.28
$444.28
$444.28
$444.28
$444.28
$444.28
$444.28
$435.90
$435.90
$435.90
$435.90
$435.90
$435.90
$435.90
$435.90
$435.90
$435.90
$435.90
$435.90
$435.90
$435.90

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THE ACTUAL PRODUCT
AMD's official Ryzen 9 5900XT model-associated Ryzen 5000-series retail-box artwork; exact model association is established by the cited manufacturer page.
Official product image · Image source detailsProduct imagery does not establish a retailer’s bundle or condition.
Compare with AMD Ryzen 9 5950X
Explore alternativesUpgrade from this product

Specifications checked 12 Sept 2026Manufacturer specifications, not a hands-on test.

Options worth comparing

Explore all alternatives

The nearest checked processors by key specifications, with what differs from the AMD Ryzen 9 5900XT. The first matches the Compare button above.

The useful part.

Key strengths

16 Zen 3 cores and 32 threads with up to 4.8 GHz boost and 64 MB of L3 cache; supports up to 128 GB of DDR4, ECC on compatible motherboards and unlocked overclocking.

Manufacturer source
The checks that matter.

Before you buy

Its 3.3 GHz base clock is lower than the 12-core 5900X's 3.7 GHz; both boost up to 4.8 GHz.

Manufacturer source Manufacturer source

Memory speed depends on how many sticks you fit: DDR4-3200 with two, DDR4-2933 with four single-rank and DDR4-2667 with four dual-rank. It also needs an AM4 motherboard with a compatible BIOS, a separate cooler and a graphics card.

Manufacturer source
Build around it.

Works with

Products in this catalogue that list the same socket or memory type as the AMD Ryzen 9 5900XT. A shared socket or memory type is necessary but not sufficient: check the exact CPU and memory support lists, and the BIOS version, before buying.

Start a build with thisOpens My setups with the AMD Ryzen 9 5900XT in place and checks each part you add
Every specification. With its source.

Full specifications

Suggest a correctionOur publishing standard

Exact configuration: AM4 boxed processor 100-100001581WOF · cooler not included

39 specifications in 9 groups. Values are manufacturer specifications unless a row says “Measured result” or “Calculated from cited specifications”. 3 rows repeat listed facts in the manufacturer’s own wording, kept under “Manufacturer wording”.

Cores & clocks

8 items
CPU cores
16Source
Thread count
32Source
Maximum boost clock
4.8 GHz

Peak boost clock, not a sustained all-core speed.

Source
Base clock
3.3 GHz

Base frequency; boost clocks are listed separately.

Source
CPU architecture
Zen 3

AMD's CPU core architecture.

Source
CPU unlocked for overclocking
Yes

AMD lists the CPU as unlocked for overclocking; the motherboard and firmware must support it, and results aren't guaranteed.

Source
Tuning support
Unlocked CPU overclocking; Ryzen Master support

AMD lists the CPU as unlocked for overclocking and supported by Ryzen Master. Results depend on the motherboard, cooling and the individual chip.

Source
Automatic boost technology
Precision Boost 2

Automatic boost, separate from PBO and manual CPU tuning.

Source
Manufacturer wording (2)

The same facts in the manufacturer’s combined or original wording, each with its source.

Core count and architecture
16 cores · Zen 3

Core count and architecture alone don't determine application performance.

Source
Base / boost clocks and conditions
3.3 GHz base; up to 4.8 GHz boost

Maximum boost is not sustained all-core frequency. Workload, cooling and firmware affect clocks.

Source

Cache

3 items
L3 cache
64 MB

Total L3 cache across the processor.

Source
L2 cache
8 MBSource
L1 cache
1024 KB

Total L1 cache, separate from L2 and L3.

Source

Power & temperature

2 items
Default TDP
105 W

Default TDP, not measured system power.

Source
Maximum junction temperature
90 °C

AMD's maximum operating temperature (Tjmax), not a typical running temperature.

Source
Manufacturer wording (1)

The same facts in the manufacturer’s combined or original wording, each with its source.

Processor power definitions
105 W default TDP

AMD's thermal design rating, not the power the whole system will draw.

Source

Memory support

7 items
Memory support
DDR4; up to 3200 MT/s

AMD rates two DIMMs at DDR4-3200, four single-rank DIMMs at DDR4-2933 and four dual-rank DIMMs at DDR4-2667, up to 128 GB over two channels. Check the motherboard's CPU-support list and BIOS.

Source
Maximum supported memory
128 GB

AMD's CPU limit; the motherboard, its BIOS and the memory kit must also support this capacity.

Source
CPU ECC memory capability
Yes

AMD lists ECC support; the motherboard, BIOS and memory must also support ECC.

Source
Memory channels
2

Memory channels in the processor, not the number of motherboard DIMM slots.

Source
Memory rate with two DIMMs
3200 MT/s

Applies to two single- or dual-rank DDR4 modules; XMP speeds aren't guaranteed.

Source
Memory rate with four single-rank DIMMs
2933 MT/s

Four single-rank DDR4 modules have a lower rated speed than two.

Source
Memory rate with four dual-rank DIMMs
2667 MT/s

Four dual-rank DDR4 modules have the lowest rated speed.

Source

Graphics, display & AI

2 items
Integrated graphics available
No

AMD says a discrete graphics card is required.

Source
Integrated graphics or none
None; a discrete graphics card is required

AMD says a discrete graphics card is required; the motherboard's video ports won't work with this processor.

Source

PCIe, USB & storage

6 items
PCIe configuration
PCIe 4.0

CPU PCIe version, not the number of motherboard slots or a guarantee of the board's bandwidth.

Source
Native PCIe lanes
24 total / 20 usable

Lanes provided by the CPU; chipset lanes and board slots are separate.

Source
Native USB capabilities
4 USB 10 Gb/s ports

Ports provided by the processor itself; the motherboard's chipset and controllers decide the ports on the board.

Source
Native SATA ports
2

SATA ports provided by the CPU; the motherboard decides how many are fitted.

Source
Additional chipset PCIe capability
X570: 16 × Gen 4; X470: 2 × Gen 3 and 8 × Gen 2

Extra usable lanes from the chipset, on top of the CPU's 24 total / 20 usable lanes. Slots and lane sharing depend on the motherboard.

Source
NVMe capability
Boot; RAID 0, 1 and 10

RAID modes need compatible motherboard firmware and drives.

Source

Platform & package

5 items
Socket
AM4Source
Cooling
Cooler required separately

Applies to the boxed version listed here.

Source
Platform checks
Supported AM4 motherboard and DDR4 memory required. Check the motherboard's CPU-support list and BIOS. A separate graphics card is required.Source
Specification region
Global

AMD's specification applies globally; UK and US stock, warranty and sellers can still vary.

Source
Listed chipset families
X570, X470, B550, B450, A520

Chipset families AMD lists; check the motherboard's CPU-support list and BIOS version.

Source

Features & security

1 item
Instruction set and extensions
x86-64; AES, AMD-V, AVX, AVX2, FMA3, MMX-plus, SHA, SSE families

AMD lists SSE, SSE2, SSE3, SSE4.1, SSE4.2, SSE4A and SSSE3; AVX-512 is not listed.

Source

Manufacturing

5 items
CPU manufacturing process
TSMC 7nm FinFET

Manufacturing process for the CPU cores.

Source
I/O die manufacturing process
12nm GlobalFoundries

Manufacturing process for the separate I/O die.

Source
Compute-die area
74 mm²

Size of one CPU compute die.

Source
I/O die area
125 mm²

Size of the I/O die.

Source
Package die count
3

Number of dies in the processor package, not the core count.

Source
Similar products.

Compare with another processor

More of the nearest checked processors by key specifications, for a side-by-side comparison.

AMD's official boxed-product artwork for Ryzen 9 9950X; the exact model is established by its manufacturer page, not a readable model number on the visible box face.AMD Ryzen 9 9950XAM5 boxed processor 100-100001277WOF · cooler not includedCompare the two AMD's official boxed-product artwork associated with Ryzen 9 7950X on its exact manufacturer product page; the visible artwork identifies the family rather than a readable exact model number.AMD Ryzen 9 7950XAM5 boxed processor 100-100000514WOF · cooler not includedCompare the two AMD's official Ryzen 7 5800XT model-associated Ryzen 5000-series retail-box artwork; exact model association is established by the cited manufacturer page.AMD Ryzen 7 5800XTAM4 boxed processor 100-100001582WOFCompare the two AMD's official Ryzen 7 5800X model-associated Ryzen 5000-series retail-box artwork; exact model association is established by the cited manufacturer page.AMD Ryzen 7 5800XAM4 boxed processor 100-100000063WOF · cooler not includedCompare the two AMD's official boxed-product artwork associated with Ryzen 9 9900X on its exact manufacturer product page; the visible artwork identifies the family rather than a readable exact model number.AMD Ryzen 9 9900XAM5 boxed processor 100-100000662WOF · cooler not includedCompare the two AMD's official boxed-product artwork associated with Ryzen 9 7950X3D on its exact manufacturer product page; the visible artwork identifies the family rather than a readable exact model number.AMD Ryzen 9 7950X3DAM5 boxed processor 100-100000908WOF · cooler not includedCompare the two AMD's official boxed-product artwork associated with Ryzen 9 7900X on its exact manufacturer product page; the visible artwork identifies the family rather than a readable exact model number.AMD Ryzen 9 7900XAM5 boxed processor 100-100000589WOF · cooler not includedCompare the two AMD's official Ryzen 5 5600X model-associated Ryzen 5000-series retail-box artwork; exact model association is established by the cited manufacturer page.AMD Ryzen 5 5600XAM4 boxed processor 100-100000065BOX · Wraith Stealth includedCompare the two
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Chosen by similarity in our catalogue, not by popularity.

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