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Square green ceramic chip with gold contact pads and silver metal heat spreader engraved with Ryzen 9 9900X3D

AMD

AMD Ryzen 9 9900X3D 12-Core 4.4 GHz Socket AM5 Desktop Processor 100-100001368WOF

SKU CH-STH4-H4E65 MPN 100-100001368WOF

A 12-core AM5 desktop processor with 128 MB L3 cache, 4.4 GHz base clock and up to 5.5 GHz boost

  • Product nameRyzen 9 9900 × 3D
  • CPU cores12-Core
  • CPU socketSocket AM5
  • Maximum turbo clockUp to 5.5 GHz
  • TDP rating120 W
  • Processor classDesktop

Model Ryzen 9 9900X3D

  • 12 cores and 24 threads handle heavy multitasking with ease
  • 4 GHz base clock and 5.5 GHz max turbo deliver strong single-thread speed
  • 128 MB L3 cache plus 12 MB L2 cache accelerate gaming and creative workloads
  • Supports up to 192 GB DDR5 memory with ECC for large projects
  • Integrated AMD Radeon graphics provide display output without a discrete card

12-Core Zen 5 Desktop Processor

The AMD Ryzen 9 9900X3D is a 12-core, 24-thread desktop processor built on the Zen 5 architecture using TSMC 4nm FinFET technology. It operates at a base frequency of 4.4 GHz with a maximum turbo frequency of 5.5 GHz. The processor fits the Socket AM5 platform and includes integrated AMD Radeon Graphics for basic display output.

128MB L3 Cache and 3D V-Cache Technology

The chip features 128MB of L3 cache combined with 12MB of L2 cache, delivering 140 megabytes of total on-chip memory through second-generation 3D V-Cache technology. This large cache pool reduces latency for gaming and creative workloads. Support for AMD EXPO technology allows compatible DDR5 memory kits to run at higher validated frequencies for smoother frame rates.

DDR5-5600 Support and 192GB Memory Capacity

The memory controller officially supports up to 192GB of DDR5 across two or four modules, with speeds up to 5600 MT/s for two single-rank kits and 3600 MT/s for four dual-rank kits. ECC memory is supported when the motherboard enables it. The platform provides PCIe 5.0 bandwidth for graphics and storage, offering headroom for future upgrades while the 120W TDP defines the thermal envelope for sustained loads.

How it compares

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

Price $440.99
Pricier than about 81% 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 5.5 GHz
Higher than about 85% 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 name100-100001368WOF
Product nameRyzen 9 9900 × 3D
Performance
Working frequency4.4 GHz
Processor
CPU cores12-Core
CPU socketSocket AM5
Maximum turbo clockUp to 5.5 GHz
TDP rating120 W
Processor classDesktop
Processor codenameGranite Ridge (Zen 5)
CPU threads24-Threads
L1 cache size960 KB
Level 2 cache12 MB
Level 3 cache128 MB
Process nodeTSMC 4 nm FinFET
CPU instruction set64-Bit
Max PCIe lanes28 Total / 24 Usable
Memory
Supported memoryMax Memory Speed:
- 2 × 1R DDR5-5600–2 × 2R DDR5-5600–4 × 1R DDR5-3600–4 × 2R DDR5-3600
Memory limit192 GB
ECC memoryYes (Requires mobo support)
Graphics
Built-in graphicsAMD Radeon Graphics
GPU base clock2200 MHz
Ports & slots
PCIe generation5.0
Size & build
Shipping weight0.09 kg
Package size127 × 127 × 30 mm
Compatibility
Compatible desktop chipsetsAMD A620 / AMD B650 / AMD B650E / AMD B840 / AMD B850 / AMD X670 / AMD X670E / AMD X870 / AMD X870E
Compatible systemsWindows 11–64-Bit Edition , Windows 10–64-Bit Edition , RHEL x86 64-Bit , Ubuntu x86 64-Bit
In the box
Included coolerNot included - Processor Only
More details
Multimedia instructionAES, AMD-V, AVX512, AVX2, AVX, FMA3, MMX-plus, SHA, SSE2, SSE4.2, SSE4A, SSE4.1, SSE3, SSSE3, SSE, x86-64
Advanced technologiesAMD EXPO Technology, AMD Ryzen Technologies

Other versions of this model

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Questions about this item

Will the 120 W TDP require a cooler replacement later?

The 120 W base power rating means a quality air or liquid cooler rated for at least that TDP should handle the processor for its useful life; no mandatory replacement interval is defined by AMD.

What thermal limit appears first during an all-core workload?

The processor will hit its 120 W power ceiling before reaching the maximum junction temperature, so sustained all-core clocks are capped by the power budget rather than thermal throttling.

How loud and hot does the chip get when running 24/7?

At the 120 W TDP the die produces steady heat that a properly sized cooler dissipates quietly; fan noise stays low unless the cooler is undersized, and case airflow determines final temperatures.

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