
AMD Threadripper PRO 9985WX
Expert rating9.1 / 10
- Brand:
- AMD
- Form Factor:
- Server & Enthusiast
- CPU Socket:
- sTR5
- Core/Thread Count:
- 64C/128T
- TDP:
- 350W
- iGPU:
- None
- CPU Series:
- Threadripper PRO
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Manufacturer: AMD Last updated: 2026-09-11
AMD Threadripper PRO 9985WX Review
AMD Threadripper PRO 9985WX 64-core 128-thread sTR5 certified workstation processor, 3.2GHz base / 5.4GHz boost, 350W TDP, 320MB L3 cache, Zen 5 "Shimada Peak"
The Threadripper PRO 9985WX is a high-core-count certified workstation processor aimed at professionals who need serious multi-threaded throughput for rendering, CAD, or scientific computing without stepping down to a dual-socket server. Built on Zen 5 "Shimada Peak" and rated for 350W, it pairs 64 cores and 128 threads with a 3.2GHz base clock that boosts up to 5.4GHz, backed by 320MB of L3 cache on the sTR5 platform.
Core Count and Clock Behavior
With 64 physical cores and 128 threads, the Threadripper PRO 9985WX is built for workloads that actually scale across many cores at once: video encoding, 3D rendering in Blender or V-Ray, large compile jobs, and scientific simulation. Base clock sits at 3.2GHz with single-core boost up to 5.4GHz, so lightly threaded tasks still perform well even though the chip's real strength is aggregate throughput. The 320MB L3 cache keeps large working sets fed without constantly hitting main memory, which matters for rendering and simulation datasets that don't fit in L2.
Platform and Cooling Requirements
The Threadripper PRO 9985WX runs on the workstation-class sWRX8/sTR5 platform with 8-channel ECC memory support and up to 128 PCIe 5.0 lanes. That means ECC registered memory across eight channels for maximum capacity and bandwidth in multi-terabyte datasets. At a 350W TDP, this is not a chip for a compact case: it needs a full tower with strong airflow and typically a 280mm+ liquid cooler or equivalent air cooler rated for HEDT-class heat output.
Comparison to Alternatives
Against AMD's own Threadripper PRO 9995WX, the Threadripper PRO 9985WX gives up some core count in exchange for a lower price and easier cooling, while still sharing the same 8-channel ECC memory support and full PCIe 5.0 lane count. Compared to a mainstream desktop chip like the Ryzen 9 9950X3D, the Threadripper PRO 9985WX trades gaming-optimized cache and clocks for raw core count and workstation I/O that a desktop platform simply can't match. It fits below Intel Xeon W workstation parts in this catalog when a workload favors AMD's chiplet-based core scaling over Intel's ring/mesh architecture.
Benchmarks
The benchmarks below are published results for specific applications. They are measured separately and do not feed the two scores above.
Blender Cycles (CPU) - samples/min (More is Better)
- AMD Threadripper PRO 7995WX2994 samples/min
- AMD Threadripper PRO 9995WX2648 samples/min
- AMD Threadripper PRO 9985WX (this product)2144 samples/min
- AMD Threadripper 9980X2027 samples/min
- AMD Threadripper 7980X1854 samples/min
- AMD Threadripper 7970X1305 samples/min
- AMD Threadripper 9970X1176 samples/min
- AMD Threadripper 7960X915 samples/min
Renders a fixed 3D scene on the processor using every core, from the public Blender Open Data results.
This is the clearest all-core test on the page. The gap tracks core count and sustained clocks fairly closely, so it is the best guide to render, export and compile times. It says nothing about gaming.
Our verdict
Reviewed by Burooj Alam. Rated by us, not by users.
Expert rating9.1 / 10
The Threadripper PRO 9985WX delivers workstation-grade multi-threaded performance with strong single-core boost, making it a serious option for professionals who outgrew mainstream desktop platforms.
Best for
- 3D rendering and animation professionals
- Engineers running CAD/CAM software
- Users needing many PCIe lanes for multi-GPU or storage arrays
Not for
- Budget builds
- Pure gaming rigs
- Small form factor systems
Specifications
What these specs meanIdentity
| Release Year | 2025 |
|---|
Cores and threads
| Core Count | 64 cores |
|---|---|
| Thread Count | 128 threads |
| Core Architecture | Zen 5 "Shimada Peak" |
Clocks
| Base Clock | 3.2 GHz |
|---|---|
| Boost Clock | 5.4 GHz |
Cache
| L3 Cache | 320 MB |
|---|
Platform
| Socket | sTR5 |
|---|
Memory
| Memory Channels | 8 channels |
|---|---|
| ECC Support | Yes |
Power and thermals
| TDP | 350 W |
|---|
FAQs
What are the key specifications of the AMD Threadripper PRO 9985WX?
The AMD Threadripper PRO 9985WX has 64 cores and 128 threads, a 3.2 GHz base and 5.4 GHz boost clock, 320 MB of L3 cache and a 350 W TDP. Socket: sTR5.
Will the AMD Threadripper PRO 9985WX work with my current setup?
The AMD Threadripper PRO 9985WX lists Socket is sTR5. Check that against the hardware you already own before buying, since this is the field that most often decides whether a part fits.
Who is the AMD Threadripper PRO 9985WX best suited to?
Best suited to: 3D rendering and animation professionals; Engineers running CAD/CAM software; Users needing many PCIe lanes for multi-GPU or storage arrays.
What are the drawbacks of the AMD Threadripper PRO 9985WX?
Not the best fit for: Budget builds; Pure gaming rigs; Small form factor systems.
Compare and read more
- AMD Threadripper 7960X vs AMD Threadripper PRO 9985WX
- AMD Threadripper 7970X vs AMD Threadripper PRO 9985WX
- AMD Threadripper 7980X vs AMD Threadripper PRO 9985WX
- AMD Threadripper 9960X vs AMD Threadripper PRO 9985WX
- AMD Threadripper 9970X vs AMD Threadripper PRO 9985WX
- ECC Memory Explained: Do You Actually Need It?
