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AMD

AMD Ryzen Threadripper PRO 9985WX 64-Core 3.2 GHz sTR5 desktop processor 100-100000722WOF

SKU CH-8X8E-DRNQT MPN 100-100000722WOF

A 64-core, 128-thread desktop workstation CPU reaching 5.4 GHz max turbo with 256 MB L3 cache, eight-channel DDR5-6400 and ECC support

  • Processors TypeDesktop
  • NameRyzen Threadripper PRO 9985WX
  • CPU Socket TypeSocket sTR5
  • Core NameShimada Peak
  • # of Cores64-Core
  • # of Threads128-Threads
  • 64 cores and 128 threads accelerate heavy multi-threaded workloads
  • Max turbo up to 5.4 GHz speeds up single-threaded tasks
  • 256 MB L3 cache keeps large datasets close to the cores
  • 8-channel DDR5 6400 memory support feeds bandwidth-hungry applications
  • TSMC 4 nm process and 350 W TDP balance performance with efficiency

64-Core Workstation Processor

The AMD Ryzen Threadripper PRO 9985WX is a 64-core, 128-thread desktop processor built for professional workstations. It targets artists, architects and engineers who need maximum multi-threaded throughput for rendering, simulation and complex calculations. The Zen 4 based Shimada Peak architecture runs at a 3.2 GHz base clock with a maximum turbo frequency of 5.4 GHz. A 350 W thermal design power demands robust cooling and power delivery.

sTR5 Platform and Memory Requirements

Verify that your motherboard uses the sTR5 socket and a chipset qualified for the Threadripper PRO 9000 WX-Series. The platform requires eight-channel DDR5-6400 memory with ECC support for full bandwidth and data integrity. Ensure the power delivery subsystem can sustain 350 W and that the BIOS revision includes support for the 100-100000722WOF model. No integrated graphics are present, so a discrete GPU is mandatory for display output.

Build Integration and Expansion

The processor fits into a workstation chassis with an sTR5 socket and sufficient clearance for a high-capacity cooler rated for 350 W. Eight memory channels populate up to eight DIMM slots, freeing PCIe lanes for multiple GPUs, high-speed storage and network adapters. The 256 MB L3 cache and 64 MB L2 cache reduce latency for large datasets. Enterprise-grade security and manageability features integrate with existing IT infrastructure.

Highlights

  • 64 cores and 128 threads accelerate heavy multi-threaded workloads
  • Max turbo up to 5.4 GHz speeds up single-threaded tasks
  • 256 MB L3 cache keeps large datasets close to the cores
  • 8-channel DDR5 6400 memory support feeds bandwidth-hungry applications
  • TSMC 4 nm process and 350 W TDP balance performance with efficiency

Specifications

BrandAMD
Processors TypeDesktop
SeriesRyzen Threadripper PRO 9000 WX-Series
NameRyzen Threadripper PRO 9985WX
Model100-100000722WOF
CPU Socket TypeSocket sTR5
Core NameShimada Peak
# of Cores64-Core
# of Threads128-Threads
Operating Frequency3.2 GHz
Max Turbo FrequencyUp to 5.4 GHz
L1 Cache5120 KB
L2 Cache64MB
L3 Cache256MB
Manufacturing TechTSMC 4nm FinFET
Instruction Set64-Bit
Memory TypesDDR5 6400
Memory Channel8
ECC MemorySupported
Virtualization Technology SupportYes
Integrated GraphicsNone Integrated Graphics
PCI Express Revision5.0
Max Number of PCI Express Lanes148, 144, 128 (Total/Usable/PCIe 5.0)
Thermal Design Power350W
Cooling DeviceCooling device not included - Processor Only
Compatible Desktop ChipsetsAMD Pro 695 / AMD TRX50 / AMD WRX90
Operating System SupportedWindows 11 - 64-Bit Edition, RHEL x86 64-Bit, Ubuntu x86 64-Bit, Windows 10 - 64-Bit Edition
Advanced TechnologiesAMD EXPO Technology , AMD PRO technologies , AMD Ryzen Technologies
Shipping weight0.32 kg
Package size127 × 127 × 76 mm

Questions about this item

Does the Threadripper PRO 9985WX include a cooler in the box or must one be purchased separately?

The processor is sold without a cooler; a compatible sTR5 cooling solution must be sourced separately.

Should I choose the 64-core 9985WX or a lower-core-count model from the 9000 WX-Series?

Select the 9985WX when workloads scale across 128 threads and benefit from 256 MB L3 cache; fewer cores reduce multi-thread throughput.

What does the 5.4 GHz max turbo frequency mean once the chip is installed in a workstation?

It is the highest single-core boost reachable under thermal and power headroom; sustained all-core speeds will sit below 5.4 GHz depending on cooling and workload.

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