EPYC 7543P
Ryzen Threadripper PRO 9955WX
EPYC 7543P vs Ryzen Threadripper PRO 9955WX Performance Spectrum
About PassMark
PassMark CPU Mark evaluates processor speed through complex mathematical computations. It provides a reliable metric to compare multi-core performance, where higher scores indicate faster processing for multitasking, gaming, and heavy workloads.
EPYC 7543P vs Ryzen Threadripper PRO 9955WX FPS Benchmarks
Predicted gaming performance across popular games. Tested paired with GeForce RTX 5090 to isolate CPU performance.
Search any supported game below to compare 1080p FPS for both components.
Path of Exile 2
Counter-Strike 2
League of Legends
Valorant
Among Us
Apex Legends
ARC Raiders
Baldur's Gate 3
Call of Duty: Black Ops 6
EPYC 7543P vs Ryzen Threadripper PRO 9955WX: Pros, Cons & Final Verdict
See where each CPU makes more sense in practice: gaming, heavier work, platform cost, power draw, and upgrade path.
EPYC 7543P
2021Why buy it
- ✅+300% larger total L3 cache (256 MB vs 64 MB).
- ✅Draws 225W instead of 350W, a 125W reduction.
Trade-offs
- ❌Worse for gaming: lower average FPS than Ryzen Threadripper PRO 9955WX across 50 shared CPU benchmark tests.
- ❌Lower PassMark (66,590 vs 67,561).
- ❌Lower PassMark per dollar, at 24.4 vs 157.5 PassMark/$ ($2,730 MSRP vs $429 MSRP).
- ❌Older platform position on SP3 with DDR4, while Ryzen Threadripper PRO 9955WX moves to sTR5 and DDR5.
Ryzen Threadripper PRO 9955WX
2025Why buy it
- ✅Better for gaming: +29.7% higher average FPS across 50 shared CPU benchmark tests.
- ✅Costs $2,301 less on MSRP ($429 MSRP vs $2,730 MSRP).
- ✅Delivers 545.6% more PassMark for each dollar spent, at 157.5 vs 24.4 PassMark/$ ($429 MSRP vs $2,730 MSRP).
- ✅Newer platform on sTR5 with DDR5 support instead of SP3 and DDR4.
Trade-offs
- ❌Smaller total L3 cache (64 MB vs 256 MB).
- ❌55.6% higher power demand at 350W vs 225W.
Quick Answers
So, is Ryzen Threadripper PRO 9955WX better than EPYC 7543P?
Which one is better for gaming?
Which one is better for streaming, content creation, and heavy multitasking?
Which one is the smarter buy today, not just the cheaper CPU?
Which one is more future-proof for 2026 and beyond?
EPYC 7543P vs Ryzen Threadripper PRO 9955WX Technical Specifications
Side-by-side specs, architecture details, clocks, memory, power, and platform differences.
EPYC 7543P
The EPYC 7543P is manufactured by AMD. It was released in 15 March 2021 (4 years ago). It is based on the Milan (2021−2023) architecture. It features 32 cores and 64 threads. Base frequency is 2.8 GHz, with boost up to 3.7 GHz. L3 cache: 256 MB (total). L2 cache: 512 kB (per core). Built on 7 nm+ process technology. Socket: SP3. Thermal design power (TDP): 225 Watt. Memory support: DDR4-3200. Passmark benchmark score: 66,590 points. Launch price was $2,730.
Ryzen Threadripper PRO 9955WX
The Ryzen Threadripper PRO 9955WX is manufactured by AMD. It was released in 23 July 2025 (less than a year ago). It is based on the Shimada Peak (2025) architecture. It features 16 cores and 32 threads. Base frequency is 4.5 GHz, with boost up to 5.4 GHz. L3 cache: 64 MB (total). L2 cache: 1 MB (per core). Built on 4 nm process technology. Socket: sTR5. Thermal design power (TDP): 350 Watt. Memory support: DDR5. Passmark benchmark score: 67,561 points. Launch price was $1,649.
Processing Power
The EPYC 7543P packs 32 cores / 64 threads, while the Ryzen Threadripper PRO 9955WX offers 16 cores / 32 threads — the EPYC 7543P has 16 more cores. Boost clocks reach 3.7 GHz on the EPYC 7543P versus 5.4 GHz on the Ryzen Threadripper PRO 9955WX — a 37.4% clock advantage for the Ryzen Threadripper PRO 9955WX (base: 2.8 GHz vs 4.5 GHz). The EPYC 7543P uses the Milan (2021−2023) architecture (7 nm+), while the Ryzen Threadripper PRO 9955WX uses Shimada Peak (2025) (4 nm). In PassMark, the EPYC 7543P scores 66,590 against the Ryzen Threadripper PRO 9955WX's 67,561 — a 1.4% lead for the Ryzen Threadripper PRO 9955WX. L3 cache: 256 MB (total) on the EPYC 7543P vs 64 MB (total) on the Ryzen Threadripper PRO 9955WX.
| Feature | EPYC 7543P | Ryzen Threadripper PRO 9955WX |
|---|---|---|
| Cores / Threads | 32 / 64+100% | 16 / 32 |
| Boost Clock | 3.7 GHz | 5.4 GHz+46% |
| Base Clock | 2.8 GHz | 4.5 GHz+61% |
| L3 Cache | 256 MB (total)+300% | 64 MB (total) |
| L2 Cache | 512 kB (per core) | 1 MB (per core)+100% |
| Process | 7 nm+ | 4 nm-43% |
| Architecture | Milan (2021−2023) | Shimada Peak (2025) |
| PassMark | 66,590 | 67,561+1% |
| Cinebench R23 Multi | — | 40,000 |
| Geekbench 6 Single | — | 3,016 |
| Geekbench 6 Multi | — | 23,596 |
Memory & Platform
The EPYC 7543P uses the SP3 socket (PCIe 4.0), while the Ryzen Threadripper PRO 9955WX uses sTR5 (PCIe 4.0) — making them incompatible on the same motherboard. Maximum memory speed reaches 3200 on the EPYC 7543P versus DDR5-6400 on the Ryzen Threadripper PRO 9955WX — the Ryzen Threadripper PRO 9955WX supports 100% faster memory, which can translate to measurable gains in memory-sensitive workloads. The EPYC 7543P supports up to 4096 GB of RAM compared to 2048 GB — 100% more capacity for professional workloads. Both feature 8-channel memory with ECC support. Both provide 128 PCIe lanes. Chipset compatibility: SP3 (EPYC 7543P) and WRX90 (Ryzen Threadripper PRO 9955WX).
| Feature | EPYC 7543P | Ryzen Threadripper PRO 9955WX |
|---|---|---|
| Socket | SP3 | sTR5 |
| PCIe Generation | PCIe 4.0 | PCIe 4.0 |
| Max RAM Speed | 3200 | DDR5-6400+100% |
| Max RAM Capacity | 4096 GB+100% | 2048 GB |
| RAM Channels | 8 | 8 |
| ECC Support | Yes | Yes |
| PCIe Lanes | 128 | 128 |
Advanced Features
Only the Ryzen Threadripper PRO 9955WX has an unlocked multiplier for overclocking — a significant advantage for enthusiasts seeking extra performance. Only the Ryzen Threadripper PRO 9955WX supports AVX-512 instructions — important for machine learning and scientific applications. Virtualization support: VT-x, VT-d (EPYC 7543P) vs true (Ryzen Threadripper PRO 9955WX). Direct competitor: EPYC 7543P rivals Xeon Platinum 8380; Ryzen Threadripper PRO 9955WX rivals Xeon w7-3555.
| Feature | EPYC 7543P | Ryzen Threadripper PRO 9955WX |
|---|---|---|
| Integrated GPU | No | No |
| IGPU Model | None | None |
| Unlocked | No | Yes |
| AVX-512 | No | Yes |
| Virtualization | VT-x, VT-d | true |
Value Analysis
At launch, the EPYC 7543P was priced at $2730, while the Ryzen Threadripper PRO 9955WX came in at $429. On launch pricing ($2730 vs $429), Ryzen Threadripper PRO 9955WX was $2301 cheaper. In terms of value on MSRP (PassMark points per dollar), the EPYC 7543P delivers 24.4 pts/$ vs 157.5 pts/$ for the Ryzen Threadripper PRO 9955WX — making the Ryzen Threadripper PRO 9955WX the 146.4% better value option.
| Feature | EPYC 7543P | Ryzen Threadripper PRO 9955WX |
|---|---|---|
| MSRP | $2730 | $429-84% |
| Performance per Dollar | 24.4 | 157.5+545% |
| Release Date | 2021 | 2025 |
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