EPYC 7643P vs Xeon w9-3575X
EPYC 7643P
Xeon w9-3575X
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 7643P
Performance Per Dollar Xeon w9-3575X
Performance Comparison
About PassMark🏆 Chipversus Verdict
🚀 Performance Leadership
| Insight | EPYC 7643P | Xeon w9-3575X |
|---|---|---|
| Gaming | ❌ Lower gaming performance | ✅ Superior gaming performance |
| Workstation | ❌ Weaker in multi-core tasks | ✅ Better multi-core power |
| Price | ⚠️ Higher cost ($2,722) | ✅ More affordable ($675) |
| Longevity | ✨ Modern (Milan (2021−2023) / 7 nm) | ✨ Modern (Sapphire Rapids (2023−2024) / Intel 7 nm) |
💎 Value Proposition
| Insight | EPYC 7643P | Xeon w9-3575X |
|---|---|---|
| Cost Efficiency | ❌ Lower cost efficiency | ✅ Better overall value (+330%) |
| Upfront Cost | ⚠️ Higher cost ($2,722) | ✅ More affordable ($675) |
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 7643P and Xeon w9-3575X
EPYC 7643P
The EPYC 7643P is manufactured by AMD. It was released in 5 September 2023 (2 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. Passmark benchmark score: 77,307 points. Launch price was $2,722.
Xeon w9-3575X
The Xeon w9-3575X is manufactured by Intel. It was released in 24 August 2024 (1 year ago). It is based on the Sapphire Rapids (2023−2024) architecture. It features 44 cores and 88 threads. Base frequency is 2.2 GHz, with boost up to 4.8 GHz. L3 cache: 97.5 MB. L2 cache: 2 MB (per core). Built on Intel 7 nm process technology. Socket: LGA4677. Thermal design power (TDP): 340 Watt. Memory support: DDR5-4800. Passmark benchmark score: 82,507 points. Launch price was $3,789.
Processing Power
The EPYC 7643P packs 48 cores / 96 threads, while the Xeon w9-3575X offers 44 cores / 88 threads — the EPYC 7643P has 4 more cores. Boost clocks reach 3.6 GHz on the EPYC 7643P versus 4.8 GHz on the Xeon w9-3575X — a 28.6% clock advantage for the Xeon w9-3575X (base: 2.3 GHz vs 2.2 GHz). The EPYC 7643P uses the Milan (2021−2023) architecture (7 nm), while the Xeon w9-3575X uses Sapphire Rapids (2023−2024) (Intel 7 nm). In PassMark, the EPYC 7643P scores 77,307 against the Xeon w9-3575X's 82,507 — a 6.5% lead for the Xeon w9-3575X. L3 cache: 256 MB (total) on the EPYC 7643P vs 97.5 MB on the Xeon w9-3575X.
| Feature | EPYC 7643P | Xeon w9-3575X |
|---|---|---|
| Cores / Threads | 48 / 96+9% | 44 / 88 |
| Boost Clock | 3.6 GHz | 4.8 GHz+33% |
| Base Clock | 2.3 GHz+5% | 2.2 GHz |
| L3 Cache | 256 MB (total)+163% | 97.5 MB |
| L2 Cache | 512 kB (per core) | 2 MB (per core)+300% |
| Process | 7 nm | Intel 7 nm |
| Architecture | Milan (2021−2023) | Sapphire Rapids (2023−2024) |
| PassMark | 77,307 | 82,507+7% |
| Cinebench R23 Multi | — | 60,000 |
| Geekbench 6 Single | — | 2,300 |
| Geekbench 6 Multi | — | 19,320 |
Memory & Platform
The EPYC 7643P uses the SP3 socket (PCIe 4.0), while the Xeon w9-3575X uses LGA4677 (PCIe 5.0) — making them incompatible on the same motherboard. Maximum memory speed reaches 3200 on the EPYC 7643P versus DDR5-4800 on the Xeon w9-3575X — the EPYC 7643P supports 199.4% faster memory, which can translate to measurable gains in memory-sensitive workloads. Both support up to 4096 of RAM. Both feature 8-channel memory with ECC support. PCIe lanes: 128 (EPYC 7643P) vs 112 (Xeon w9-3575X) — the EPYC 7643P offers 16 more lanes for additional GPUs or NVMe drives. Chipset compatibility: SP3 (EPYC 7643P) and W790 (Xeon w9-3575X).
| Feature | EPYC 7643P | Xeon w9-3575X |
|---|---|---|
| Socket | SP3 | LGA4677 |
| PCIe Generation | PCIe 4.0 | PCIe 5.0+25% |
| Max RAM Speed | 3200+63900% | DDR5-4800 |
| Max RAM Capacity | 4096 | 4096 GB+104857500% |
| RAM Channels | 8 | 8 |
| ECC Support | ✅ | ✅ |
| PCIe Lanes | 128+14% | 112 |
Advanced Features
Only the Xeon w9-3575X has an unlocked multiplier for overclocking — a significant advantage for enthusiasts seeking extra performance. Only the Xeon w9-3575X supports AVX-512 instructions — important for machine learning and scientific applications. Virtualization support: VT-x, VT-d, SEV (EPYC 7643P) vs true (Xeon w9-3575X). Direct competitor: EPYC 7643P rivals Xeon Platinum 8380; Xeon w9-3575X rivals Ryzen Threadripper 7970X.
| Feature | EPYC 7643P | Xeon w9-3575X |
|---|---|---|
| Integrated GPU | No | No |
| IGPU Model | None | None |
| Unlocked | No | Yes |
| AVX-512 | No | Yes |
| Virtualization | VT-x, VT-d, SEV | true |
Value Analysis
The EPYC 7643P launched at $2722 MSRP, while the Xeon w9-3575X debuted at $3789. At current prices ($2722 vs $675), the Xeon w9-3575X is $2047 cheaper. In terms of value (PassMark points per dollar), the EPYC 7643P delivers 28.4 pts/$ vs 122.2 pts/$ for the Xeon w9-3575X — making the Xeon w9-3575X the 124.6% better value option.
| Feature | EPYC 7643P | Xeon w9-3575X |
|---|---|---|
| MSRP | $2722-28% | $3789 |
| Avg Price (30d) | $2722 | $675-75% |
| Performance per Dollar | 28.4 | 122.2+330% |
| Release Date | 2023 | 2024 |
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