EPYC 7643 vs Ryzen Threadripper PRO 5975WX
EPYC 7643
Ryzen Threadripper PRO 5975WX
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 EPYC 7643
Performance Per Dollar Ryzen Threadripper PRO 5975WX
Performance Comparison
About PassMark🏆 Chipversus Verdict
🚀 Performance Leadership
| Insight | EPYC 7643 | Ryzen Threadripper PRO 5975WX |
|---|---|---|
| Gaming | ❌ Lower gaming performance | ✅ Superior gaming performance |
| Workstation | ✅ Better multi-core power | ❌ Weaker in multi-core tasks |
| Price | ⚠️ Higher cost ($2,750) | ✅ More affordable ($2,495) |
| Longevity | ✨ Modern (Milan (2021−2023) / 7 nm+) | ✨ Modern (Chagall PRO (2022) / 7 nm) |
💎 Value Proposition
| Insight | EPYC 7643 | Ryzen Threadripper PRO 5975WX |
|---|---|---|
| Cost Efficiency | ❌ Lower cost efficiency | ✅ Better overall value (+9%) |
| Upfront Cost | ⚠️ Higher cost ($2,750) | ✅ More affordable ($2,495) |
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 EPYC 7643 and Ryzen Threadripper PRO 5975WX
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.
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.
Processing Power
The EPYC 7643 packs 48 cores / 96 threads, while the Ryzen Threadripper PRO 5975WX offers 32 cores / 64 threads — the EPYC 7643 has 16 more cores. Boost clocks reach 3.6 GHz on the EPYC 7643 versus 4.5 GHz on the Ryzen Threadripper PRO 5975WX — a 22.2% clock advantage for the Ryzen Threadripper PRO 5975WX (base: 2.3 GHz vs 3.6 GHz). The EPYC 7643 uses the Milan (2021−2023) architecture (7 nm+), while the Ryzen Threadripper PRO 5975WX uses Chagall PRO (2022) (7 nm). In PassMark, the EPYC 7643 scores 76,050 against the Ryzen Threadripper PRO 5975WX's 74,985 — a 1.4% lead for the EPYC 7643. Geekbench 6 single-core — the metric most relevant to gaming — records 1,671 vs 1,686, a 0.9% lead for the Ryzen Threadripper PRO 5975WX that directly translates to higher frame rates. Multi-core Geekbench: 15,000 vs 29,745 (65.9% advantage for the Ryzen Threadripper PRO 5975WX). L3 cache: 256 MB (total) on the EPYC 7643 vs 128 MB on the Ryzen Threadripper PRO 5975WX.
| Feature | EPYC 7643 | Ryzen Threadripper PRO 5975WX |
|---|---|---|
| Cores / Threads | 48 / 96+50% | 32 / 64 |
| Boost Clock | 3.6 GHz | 4.5 GHz+25% |
| Base Clock | 2.3 GHz | 3.6 GHz+57% |
| L3 Cache | 256 MB (total)+100% | 128 MB |
| L2 Cache | 512 kB (per core) | 512K (per core) |
| Process | 7 nm+ | 7 nm |
| Architecture | Milan (2021−2023) | Chagall PRO (2022) |
| PassMark | 76,050+1% | 74,985 |
| Cinebench R23 Multi | — | 53,977 |
| Geekbench 6 Single | 1,671 | 1,686 |
| Geekbench 6 Multi | 15,000 | 29,745+98% |
Memory & Platform
The EPYC 7643 uses the SP3 socket (PCIe 4.0), while the Ryzen Threadripper PRO 5975WX uses sWRX8 (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: SP3 (EPYC 7643) and WRX80 (Ryzen Threadripper PRO 5975WX).
| Feature | EPYC 7643 | Ryzen Threadripper PRO 5975WX |
|---|---|---|
| Socket | SP3 | sWRX8 |
| PCIe Generation | PCIe 4.0 | PCIe 4.0 |
| Max RAM Speed | DDR4-3200 | DDR4-3200 |
| Max RAM Capacity | 4 TB+100% | 2048 GB |
| 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: AMD-V (EPYC 7643) vs true (Ryzen Threadripper PRO 5975WX). Primary use case: EPYC 7643 targets Server. Direct competitor: EPYC 7643 rivals EPYC 7443P; Ryzen Threadripper PRO 5975WX rivals Xeon Gold 6338.
| Feature | EPYC 7643 | Ryzen Threadripper PRO 5975WX |
|---|---|---|
| Integrated GPU | No | No |
| IGPU Model | None | None |
| Unlocked | No | Yes |
| AVX-512 | No | No |
| Virtualization | AMD-V | true |
| Target Use | Server | — |
Value Analysis
The EPYC 7643 launched at $4995 MSRP, while the Ryzen Threadripper PRO 5975WX debuted at $2495. At current prices ($2750 vs $2495), the Ryzen Threadripper PRO 5975WX is $255 cheaper. In terms of value (PassMark points per dollar), the EPYC 7643 delivers 27.7 pts/$ vs 30.1 pts/$ for the Ryzen Threadripper PRO 5975WX — making the Ryzen Threadripper PRO 5975WX the 8.3% better value option.
| Feature | EPYC 7643 | Ryzen Threadripper PRO 5975WX |
|---|---|---|
| MSRP | $4995 | $2495-50% |
| Avg Price (30d) | $2750 | $2495-9% |
| Performance per Dollar | 27.7 | 30.1+9% |
| Release Date | 2021 | 2022 |
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