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Square green ceramic processor with gold contact pads and silver metal heat spreader engraved with Ryzen 9 9900X text

AMD

AMD Ryzen 9 9900X 12-Core 4.4 GHz desktop processor 100-100000662WOF

SKU CH-0TZP-DK165 MPN 100-100000662WOF

12-core desktop CPU with 24 threads, 4.4 GHz base clock, 5.6 GHz max boost, 64 MB L3 cache and DDR5-5600 support on Socket AM5

  • Product nameRyzen 9 9900X
  • CPU cores12-Core
  • CPU socketSocket AM5
  • Maximum turbo clockUp to 5.6 GHz
  • TDP rating120 W
  • Processor classDesktop

Model Ryzen 9 9900X

  • 12 cores and 24 threads handle heavy multitasking with ease
  • Zen 5 architecture on TSMC 4 nm delivers high instructions per clock
  • 6 GHz max boost accelerates single-thread workloads
  • 64 MB L3 cache keeps large data sets close to the cores
  • DDR5 5600 dual-channel support provides fast memory bandwidth

12-core desktop processor for gaming and streaming

The AMD Ryzen 9 9900X is a 12-core, 24-thread desktop CPU built on the Zen 5 architecture. It targets enthusiasts who need high single-thread speed and multi-thread throughput for gaming, streaming and content creation. The processor fits the AM5 platform and supports DDR5 memory.

Maximum boost frequency of 5.6 GHz

The single specification that defines this part is its maximum boost frequency of 5.6 GHz. Combined with 64 MB of L3 cache and an unlocked multiplier, this clock speed delivers the responsive performance required for competitive gaming and heavy multitasking workloads.

Requires AM5 motherboard and discrete cooler

This CPU requires a Socket AM5 motherboard with a compatible chipset to enable PCIe 5.0 and DDR5-5600 operation. No cooler is included in the box, so a separate air or liquid solution rated for 120 W TDP must be provided. The integrated Radeon graphics handle basic display output while a discrete GPU is free for rendering tasks.

How it compares

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

Price $328.99
Pricier than about 77% of the 494 comparable items (median $149.99).
CPU cores 12-Core
Higher than about 60% of the 271 comparable items (median 8).
Maximum turbo clock Up to 5.6 GHz
Higher than about 90% of the 246 comparable items (median 4.7 GHz).

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 9000 Series
Model name100-100000662WOF
Product nameRyzen 9 9900X
Performance
Working frequency4.4 GHz
Processor
CPU cores12-Core
CPU socketSocket AM5
Maximum turbo clockUp to 5.6 GHz
TDP rating120 W
Processor classDesktop
Processor codenameGranite Ridge
CPU threads24-Threads
L1 cache size768 KB
Level 2 cache12 MB
Level 3 cache64 MB
Process nodeZen 5 TSMC 4 nm FinFET
CPU instruction set64-Bit
Max PCIe lanes24/28 (Usable/Total)
Memory
Supported memoryDDR5 5600
Channel configuration2
Memory limit256 GB
Graphics
Built-in graphicsAMD Radeon Graphics
GPU base clock2200 MHz
Ports & slots
PCIe generation5.0
Size & build
Shipping weight0.09 kg
Package size127 × 127 × 36 mm
Compatibility
Compatible desktop chipsetsAMD A620 / AMD B650 / AMD B650E / AMD B850 / AMD X670 / AMD X670E / AMD X870 / AMD X870E
Compatible systemsRHEL / Ubuntu / Windows 10 / Windows 11
In the box
Included coolerNot included - Processor Only
More details
Advanced technologiesAMD EXPO Technology, AMD Ryzen Technologies

Other versions of this model

3 more in the same range

Questions about this item

How does the 4.4 GHz base clock behave once the Ryzen 9 9900X is installed in a system?

The 4.4 GHz base clock is the guaranteed minimum frequency across all 12 cores under sustained load. With adequate cooling the processor will exceed this speed up to the 5.6 GHz max boost depending on workload and thermal headroom.

What does the DDR5 5600 memory specification actually limit in daily use?

DDR5 5600 is the highest JEDEC speed the integrated memory controller supports natively. Faster kits require EXPO or manual overclocking and stability is then dependent on motherboard topology and silicon quality.

What physical clearance does the Socket AM5 package need for a cooler?

The chip uses the standard AM5 socket footprint and integrated heat spreader height. Any cooler rated for AM5 with a 120 W TDP rating or higher will mount using the motherboard backplate and supplied brackets.

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