Ryzen Threadripper PRO 5975WX vs EPYC 7643
Ryzen Threadripper PRO 5975WX
EPYC 7643
Performance Spectrum - CPU
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.
Value Upgrade Path
This is the official ChipVERSUS Value Rating, comparing raw performance (PassMark) per dollar. Components placed above yours deliver better value for money.
Avg price is the current average price collected from markets across the web.
Performance Per Dollar Ryzen Threadripper PRO 5975WX
Performance Per Dollar EPYC 7643
Performance Comparison
About PassMark🏆 Chipversus Verdict
🚀 Performance Leadership
| Insight | Ryzen Threadripper PRO 5975WX | EPYC 7643 |
|---|---|---|
| Gaming | ✅ Superior gaming performance | ❌ Lower gaming performance |
| Workstation | ❌ Weaker in multi-core tasks | ✅ Better multi-core power |
| Price | ✅ More affordable ($2,495) | ⚠️ Higher cost ($2,750) |
| Longevity | ✨ Modern (Chagall PRO (2022) / 7 nm) | ✨ Modern (Milan (2021−2023) / 7 nm+) |
💎 Value Proposition
| Insight | Ryzen Threadripper PRO 5975WX | EPYC 7643 |
|---|---|---|
| Cost Efficiency | ✅ Better overall value (+9%) | ❌ Lower cost efficiency |
| Upfront Cost | ✅ More affordable ($2,495) | ⚠️ Higher cost ($2,750) |
Performance Check
To accurately isolate CPU performance, all benchmarks below use an NVIDIA RTX 4090 as the reference GPU. This eliminates GPU-side bottlenecks and highlights pure processing throughput differences between the CPUs.
Note: Real-world results may vary based on your actual GPU. CPU performance impact is more visible in processing-intensive titles and high-refresh-rate gaming scenarios.
Technical Specifications
Side-by-side comparison of Ryzen Threadripper PRO 5975WX and EPYC 7643
Ryzen Threadripper PRO 5975WX
The Ryzen Threadripper PRO 5975WX is manufactured by AMD. It was released in 2022-03-08. It is based on the Chagall PRO (2022) architecture. It features 32 cores and 64 threads. Base frequency is 3.6 GHz, with boost up to 4.5 GHz. L3 cache: 128 MB. L2 cache: 512K (per core). Built on 7 nm process technology. Socket: sWRX8. Thermal design power (TDP): 280 Watt. Memory support: DDR4-3200. Passmark benchmark score: 74,985 points. Launch price was $3,299.
EPYC 7643
The EPYC 7643 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 48 cores and 96 threads. Base frequency is 2.3 GHz, with boost up to 3.6 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: 76,050 points. Launch price was $4,995.
Processing Power
The Ryzen Threadripper PRO 5975WX packs 32 cores / 64 threads, while the EPYC 7643 offers 48 cores / 96 threads — the EPYC 7643 has 16 more cores. Boost clocks reach 4.5 GHz on the Ryzen Threadripper PRO 5975WX versus 3.6 GHz on the EPYC 7643 — a 22.2% clock advantage for the Ryzen Threadripper PRO 5975WX (base: 3.6 GHz vs 2.3 GHz). The Ryzen Threadripper PRO 5975WX uses the Chagall PRO (2022) architecture (7 nm), while the EPYC 7643 uses Milan (2021−2023) (7 nm+). In PassMark, the Ryzen Threadripper PRO 5975WX scores 74,985 against the EPYC 7643's 76,050 — a 1.4% lead for the EPYC 7643. Geekbench 6 single-core — the metric most relevant to gaming — records 1,686 vs 1,671, a 0.9% lead for the Ryzen Threadripper PRO 5975WX that directly translates to higher frame rates. Multi-core Geekbench: 29,745 vs 15,000 (65.9% advantage for the Ryzen Threadripper PRO 5975WX). L3 cache: 128 MB on the Ryzen Threadripper PRO 5975WX vs 256 MB (total) on the EPYC 7643.
| Feature | Ryzen Threadripper PRO 5975WX | EPYC 7643 |
|---|---|---|
| Cores / Threads | 32 / 64 | 48 / 96+50% |
| Boost Clock | 4.5 GHz+25% | 3.6 GHz |
| Base Clock | 3.6 GHz+57% | 2.3 GHz |
| L3 Cache | 128 MB | 256 MB (total)+100% |
| L2 Cache | 512K (per core) | 512 kB (per core) |
| Process | 7 nm | 7 nm+ |
| Architecture | Chagall PRO (2022) | Milan (2021−2023) |
| PassMark | 74,985 | 76,050+1% |
| Cinebench R23 Multi | 53,977 | — |
| Geekbench 6 Single | 1,686 | 1,671 |
| Geekbench 6 Multi | 29,745+98% | 15,000 |
Memory & Platform
The Ryzen Threadripper PRO 5975WX uses the sWRX8 socket (PCIe 4.0), while the EPYC 7643 uses SP3 (PCIe 4.0) — making them incompatible on the same motherboard. Both support up to DDR4-3200 memory speed. The Ryzen Threadripper PRO 5975WX supports up to 2048 GB of RAM compared to 4 TB — 199.2% more capacity for professional workloads. Both feature 8-channel memory with ECC support. Both provide 128 PCIe lanes. Chipset compatibility: WRX80 (Ryzen Threadripper PRO 5975WX) and SP3 (EPYC 7643).
| Feature | Ryzen Threadripper PRO 5975WX | EPYC 7643 |
|---|---|---|
| Socket | sWRX8 | SP3 |
| PCIe Generation | PCIe 4.0 | PCIe 4.0 |
| Max RAM Speed | DDR4-3200 | DDR4-3200 |
| Max RAM Capacity | 2048 GB | 4 TB+100% |
| RAM Channels | 8 | 8 |
| ECC Support | ✅ | ✅ |
| PCIe Lanes | 128 | 128 |
Advanced Features
Only the Ryzen Threadripper PRO 5975WX has an unlocked multiplier for overclocking — a significant advantage for enthusiasts seeking extra performance. Virtualization support: true (Ryzen Threadripper PRO 5975WX) vs AMD-V (EPYC 7643). Primary use case: EPYC 7643 targets Server. Direct competitor: Ryzen Threadripper PRO 5975WX rivals Xeon Gold 6338; EPYC 7643 rivals EPYC 7443P.
| Feature | Ryzen Threadripper PRO 5975WX | EPYC 7643 |
|---|---|---|
| Integrated GPU | No | No |
| IGPU Model | None | None |
| Unlocked | Yes | No |
| AVX-512 | No | No |
| Virtualization | true | AMD-V |
| Target Use | — | Server |
Value Analysis
The Ryzen Threadripper PRO 5975WX launched at $2495 MSRP, while the EPYC 7643 debuted at $4995. At current prices ($2495 vs $2750), the Ryzen Threadripper PRO 5975WX is $255 cheaper. In terms of value (PassMark points per dollar), the Ryzen Threadripper PRO 5975WX delivers 30.1 pts/$ vs 27.7 pts/$ for the EPYC 7643 — making the Ryzen Threadripper PRO 5975WX the 8.3% better value option.
| Feature | Ryzen Threadripper PRO 5975WX | EPYC 7643 |
|---|---|---|
| MSRP | $2495-50% | $4995 |
| Avg Price (30d) | $2495-9% | $2750 |
| Performance per Dollar | 30.1+9% | 27.7 |
| Release Date | 2022 | 2021 |
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