EPYC 7643 vs Xeon Platinum 8461V
EPYC 7643
Xeon Platinum 8461V
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 Xeon Platinum 8461V
Performance Comparison
About PassMark🏆 Chipversus Verdict
🚀 Performance Leadership
| Insight | EPYC 7643 | Xeon Platinum 8461V |
|---|---|---|
| Gaming | ❌ Lower gaming performance | ✅ Superior gaming performance |
| Workstation | ✅ Better multi-core power | ❌ Weaker in multi-core tasks |
| Price | ✅ More affordable ($2,750) | ⚠️ Higher cost ($4,491) |
| Longevity | ✨ Modern (Milan (2021−2023) / 7 nm+) | ✨ Modern (Sapphire Rapids (2023−2024) / Intel 7 nm) |
💎 Value Proposition
| Insight | EPYC 7643 | Xeon Platinum 8461V |
|---|---|---|
| Cost Efficiency | ✅ Better overall value (+66%) | ❌ Lower cost efficiency |
| Upfront Cost | ✅ More affordable ($2,750) | ⚠️ Higher cost ($4,491) |
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 Xeon Platinum 8461V
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.
Xeon Platinum 8461V
The Xeon Platinum 8461V is manufactured by Intel. It was released in 10 January 2023 (2 years ago). It is based on the Sapphire Rapids (2023−2024) architecture. It features 48 cores and 96 threads. Base frequency is 2.2 GHz, with boost up to 3.7 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): 300 Watt. Memory support: DDR5-4800, DDR5-4400. Passmark benchmark score: 74,982 points. Launch price was $4,491.
Processing Power
Both the EPYC 7643 and Xeon Platinum 8461V share an identical 48-core/96-thread configuration. Boost clocks reach 3.6 GHz on the EPYC 7643 versus 3.7 GHz on the Xeon Platinum 8461V — a 2.7% clock advantage for the Xeon Platinum 8461V (base: 2.3 GHz vs 2.2 GHz). The EPYC 7643 uses the Milan (2021−2023) architecture (7 nm+), while the Xeon Platinum 8461V uses Sapphire Rapids (2023−2024) (Intel 7 nm). In PassMark, the EPYC 7643 scores 76,050 against the Xeon Platinum 8461V's 74,982 — a 1.4% lead for the EPYC 7643. L3 cache: 256 MB (total) on the EPYC 7643 vs 97.5 MB on the Xeon Platinum 8461V.
| Feature | EPYC 7643 | Xeon Platinum 8461V |
|---|---|---|
| Cores / Threads | 48 / 96 | 48 / 96 |
| Boost Clock | 3.6 GHz | 3.7 GHz+3% |
| 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 | 76,050+1% | 74,982 |
| Geekbench 6 Single | 1,671 | — |
| Geekbench 6 Multi | 15,000 | — |
Memory & Platform
The EPYC 7643 uses the SP3 socket (PCIe 4.0), while the Xeon Platinum 8461V uses LGA4677 (PCIe 5.0) — making them incompatible on the same motherboard. Maximum memory speed reaches DDR4-3200 on the EPYC 7643 versus 4800 on the Xeon Platinum 8461V — the Xeon Platinum 8461V supports 199.7% faster memory, which can translate to measurable gains in memory-sensitive workloads. The Xeon Platinum 8461V supports up to 4096 of RAM compared to 4 TB — 199.6% more capacity for professional workloads. Both feature 8-channel memory with ECC support. PCIe lanes: 128 (EPYC 7643) vs 80 (Xeon Platinum 8461V) — the EPYC 7643 offers 48 more lanes for additional GPUs or NVMe drives. Chipset compatibility: SP3 (EPYC 7643) and C741 (Xeon Platinum 8461V).
| Feature | EPYC 7643 | Xeon Platinum 8461V |
|---|---|---|
| Socket | SP3 | LGA4677 |
| PCIe Generation | PCIe 4.0 | PCIe 5.0+25% |
| Max RAM Speed | DDR4-3200 | 4800+119900% |
| Max RAM Capacity | 4 TB+104857500% | 4096 |
| RAM Channels | 8 | 8 |
| ECC Support | ✅ | ✅ |
| PCIe Lanes | 128+60% | 80 |
Advanced Features
Neither processor supports overclocking. Only the Xeon Platinum 8461V supports AVX-512 instructions — important for machine learning and scientific applications. Virtualization support: AMD-V (EPYC 7643) vs VT-x, VT-d (Xeon Platinum 8461V). Primary use case: EPYC 7643 targets Server. Direct competitor: EPYC 7643 rivals EPYC 7443P; Xeon Platinum 8461V rivals EPYC 9454.
| Feature | EPYC 7643 | Xeon Platinum 8461V |
|---|---|---|
| Integrated GPU | No | No |
| IGPU Model | None | None |
| Unlocked | No | No |
| AVX-512 | No | Yes |
| Virtualization | AMD-V | VT-x, VT-d |
| Target Use | Server | — |
Value Analysis
The EPYC 7643 launched at $4995 MSRP, while the Xeon Platinum 8461V debuted at $4491. At current prices ($2750 vs $4491), the EPYC 7643 is $1741 cheaper. In terms of value (PassMark points per dollar), the EPYC 7643 delivers 27.7 pts/$ vs 16.7 pts/$ for the Xeon Platinum 8461V — making the EPYC 7643 the 49.4% better value option.
| Feature | EPYC 7643 | Xeon Platinum 8461V |
|---|---|---|
| MSRP | $4995 | $4491-10% |
| Avg Price (30d) | $2750-39% | $4491 |
| Performance per Dollar | 27.7+66% | 16.7 |
| Release Date | 2021 | 2023 |
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