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Square green ceramic processor with gold contact pads and silver heat spreader engraved with Ryzen 9 5900X text

AMD

AMD Ryzen 9 5900X 12-Core 3.7 GHz Socket AM4 105W desktop processor

SKU CH-7YYH-KKN4M

12-core desktop processor with 24 threads at 3.7 GHz, 64 MB L3 cache, DDR4-3200 support and PCIe 4.0 on Socket AM4

  • Product nameRyzen 9 5900X
  • CPU cores12-Core
  • CPU socketSocket AM4
  • TDP rating105 W
  • Processor classDesktop
  • CPU threads24-Threads
  • 12 cores and 24 threads handle heavy multitasking with ease
  • 7 GHz base frequency gives strong single-thread responsiveness
  • 64 MB L3 cache reduces latency for demanding workloads
  • DDR4 3200 support delivers high memory bandwidth
  • PCIe 4.0 enables fast storage and GPU throughput

Ryzen 9 5900X 12-Core AM4 Processor

This desktop processor delivers 12 cores and 24 threads at a 3.7 GHz base frequency for demanding workloads. The Zen 3 architecture on 7 nm process technology provides 64 MB L3 cache and 6 MB L2 cache. It fits Socket AM4 motherboards with a 105 W thermal design power. Windows 11 is supported for modern operating system compatibility.

Ideal For Multi-Threaded Workloads And Gaming

Content creators and enthusiasts benefit from the high core count and large cache for rendering, encoding and compilation tasks. Gamers gain strong single-thread performance with PCIe 4.0 support for current graphics cards. Users needing integrated graphics or a bundled cooler must select a different processor. Systems limited to PCIe 3.0 will not utilise the full interface bandwidth.

Processor Only Package Requires Separate Cooling

The box contains the CPU without a stock cooler, so a compatible aftermarket solution must be sourced. Memory support is officially rated for DDR4 3200 speeds to match the memory controller specification. PCIe 4.0 lanes enable faster storage and GPU throughput when paired with a 5000-series chipset motherboard. No additional software or accessories are included in the package.

How it compares

Measured against everything we stock in Desktop Processors, at today’s prices. Recalculated every night.

Price $223.99
Pricier than about 65% of the 494 comparable items (median $149.99).
CPU cores 12-Core
Higher than about 60% of the 271 comparable items (median 8).
TDP rating 105 W
Higher than about 60% of the 320 comparable items (median 95 W).

New to this? Buying a processor with crypto — what to check, what it costs to pay, and what is never asked for.

Specifications

Product
Brand nameAMD
Product lineRyzen 9 5000 Series
Product nameRyzen 9 5900X
Performance
Working frequency3.7 GHz
Processor
CPU cores12-Core
CPU socketSocket AM4
TDP rating105 W
Processor classDesktop
CPU threads24-Threads
Level 2 cache6 MB
Level 3 cache64 MB
Process node7 nm
Memory
Supported memoryDDR4 3200
Graphics
Built-in graphicsNone Integrated Graphics
Ports & slots
PCIe generationPCIe 4.0
Compatibility
Compatible systemsWindows 11
In the box
Included coolerNot included - Processor Only

Questions about this item

What cooler do I need for the 105W Ryzen 9 5900X?

A compatible AM4 cooler rated for at least 105W TDP is required because no cooling device is included in the box.

Will my DDR4 3200 memory run at its rated speed with this CPU?

The processor officially supports DDR4 3200, so modules rated at that speed should operate at their rated frequency without manual tuning.

How can I verify the 12 cores and 24 threads are active after installation?

Open Task Manager in Windows 11, select the Performance tab, and confirm 12 cores and 24 logical processors are shown.

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