AMD

Ryzen 9 9900X Spec and Price in the United Kingdom

AM512 cores / 24 threads

Released August 15, 2024 ·

A step down from the 9950X in core count but not in per-core clock: twelve Zen 5 cores reach the same 64MB of L3 cache at up to 5.6GHz boost, inside a considerably lighter 120W TDP. That balance of high clocks and moderate power draw suits gaming and mixed creator work nearly as well as the flagship, at a lower thermal and cost ceiling. No cooler is included, so budget for one separately.

Tied 10th of 65 models in the CPU catalog on Boost clock — 7 models share this figure. Tied 17th of 65 models in the CPU catalog on L3 cache — 7 models share this figure.

Current best price
£299.99at Amazon.co.uk · captured 2026-09-13View at Amazon.co.uk

Captured periodically and may have changed.

Price history

  • Ryzen 9 9900X
August 1, 202630 capturestoday · £299.99

Each point is one capture, not a list price. How we track prices

Specifications

Cores
12
Threads
24
Socket
AM5
Boost clock
5.6 GHz
Base clock
4.4 GHz
L3 cache
64 MB
L2 cache
12 MB
TDP
120 W
Integrated graphics
Yes
Architecture
Zen 5
Process node
TSMC 4nm FinFET
Integrated GPU
AMD Radeon Graphics
Memory support
DDR5-5600
PCIe generation
5
PCIe lanes
24
Unlocked
Yes
Included cooler
No

Guides for this category

What owners and reviewers say

Summarised from 1 source(s), reviewed September 13, 2026. A source is counted only where it names this model exactly. How we track prices

Commonly praised

  • Excellent multi-threaded performance with class-leading single-core speed and great efficiency.
  • Supports a wide instruction set and does not demand an expensive cooler.

Commonly criticised

  • The asking price fails to impress, gaming performance has not improved over the previous generation, and similarly priced chips beat it.

Sources behind this summary

Sources

Every spec above was pulled from one of these — a field a source didn't state was left off rather than estimated.

The MSRP above came from this source instead, tracked separately from the specs.