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AMD · Released Jul 2025

Ryzen Threadripper PRO 9955WX Review

16C/32T · 5.4 GHz · 350 W · sTR5 · PassMark #131

Specdex verdict Ryzen Threadripper PRO 9955WX is a category laggard on the dimensions we weight — see the alternatives below.

The Ryzen Threadripper PRO 9955WX scores 67,111 on PassMark CPU Mark (rank #131 of 5,901). Score sourced from PassMark CPU Mark (June 2026 snapshot).

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Ryzen Threadripper PRO 9955WX — 16C/32T · 5.4 GHz · 350 W · sTR5 · PassMark #131
Specdex verdict
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Specdex doesn't run benchmarks in-house. The verdict is an editorial assessment based on manufacturer specs and public reviewer consensus. See methodology.

Editorial · Specdex take
Pros
  • +PassMark #131 of 5,901 — capable workhorse
  • +Workstation-tier core counts for rendering and compilation
  • +Current PassMark-tracked street price around $1,549
Cons
  • Workstation platform — overkill for gaming-only builds

Who's the Ryzen Threadripper PRO 9955WX for?

Quick verdicts for the most common buyer profiles, derived from the sub-scores above.

Power users and creators Skip

Compute scores trail current top-tier — look at our step-up alternatives below if performance is the priority.

Budget-conscious buyers Skip

At $1,649 you're in flagship territory — check the "cheaper alternatives" block below for nearer-equivalent picks at half the price.

In the box

What you get when you unbox the Ryzen Threadripper PRO 9955WX.

  • Processor
  • Cooler (non-X3D / non-K SKUs)

Standard contents — region/SKU may vary; confirm at retailer.

Sources & benchmarks

Cited, not generated
PassMark · CPU Mark
67,111

Multi-sample composite benchmark from PassMark — independent, third-party measurement. Higher is better. Specdex does not run this test; the number shown is PassMark's published score.

Performance
Ryzen Threadripper PRO 9955WX performance specs
Specification Value
Cores 16
Threads 32
L3 cache 64 MB
TDP 350 W
Memory 8-channel DDR5-6400 ECC RDIMM, up to 2TB (on WRX90)
PassMark CPU Mark 67,111
Software & support
Ryzen Threadripper PRO 9955WX software & support specs
Specification Value
Boost clock 5.4 GHz
Other
Ryzen Threadripper PRO 9955WX other specs
Specification Value
Base clock 4.5 GHz
Socket sTR5
Platform WRX90 or TRX50
PCIe 128x PCIe 5.0 + 8x PCIe 4.0 from CPU (on WRX90)
PassMark rank #131 of 5,901

Cheaper alternatives to the Ryzen Threadripper PRO 9955WX

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Step up from the Ryzen Threadripper PRO 9955WX

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Also consider

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Where the Ryzen Threadripper PRO 9955WX appears on Specdex

Curated lists, spec rankings, and buying guides where this product is mentioned or ranked.