Xeon 6781P vs EPYC 9555P
Xeon 6781P
EPYC 9555P
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 Xeon 6781P
Performance Per Dollar EPYC 9555P
Performance Comparison
About PassMark🏆 Chipversus Verdict
🚀 Performance Leadership
| Insight | Xeon 6781P | EPYC 9555P |
|---|---|---|
| Gaming | ❌ Lower gaming performance | ✅ Superior gaming performance |
| Workstation | ❌ Weaker in multi-core tasks | ✅ Better multi-core power |
| Price | ⚠️ Higher cost ($8,960) | ✅ More affordable ($6,130) |
| Longevity | ✨ Modern (Granite Rapids (2024−2025) / Intel 3 nm) | ✨ Modern (Turin (2024) / 4 nm) |
💎 Value Proposition
| Insight | Xeon 6781P | EPYC 9555P |
|---|---|---|
| Cost Efficiency | ❌ Lower cost efficiency | ✅ Better overall value (+68%) |
| Upfront Cost | ⚠️ Higher cost ($8,960) | ✅ More affordable ($6,130) |
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 Xeon 6781P and EPYC 9555P
Xeon 6781P
The Xeon 6781P is manufactured by Intel. It was released in 24 February 2025 (less than a year ago). It is based on the Granite Rapids (2024−2025) architecture. It features 80 cores and 160 threads. Base frequency is 2 GHz, with boost up to 3.8 GHz. L3 cache: 336 MB (total). L2 cache: 2 MB (per core). Built on Intel 3 nm process technology. Socket: LGA4710. Thermal design power (TDP): 350 Watt. Memory support: DDR5(6400MT/s), MRDIMM(8800MT/s). Passmark benchmark score: 117,946 points. Launch price was $8,960.
EPYC 9555P
The EPYC 9555P is manufactured by AMD. It was released in 10 October 2024 (1 year ago). It is based on the Turin (2024) architecture. It features 64 cores and 128 threads. Base frequency is 3.2 GHz, with boost up to 4.4 GHz. L3 cache: 256 MB (total). L2 cache: 1 MB (per core). Built on 4 nm process technology. Socket: SP5. Thermal design power (TDP): 360 Watt. Memory support: DDR5. Passmark benchmark score: 135,441 points. Launch price was $7,983.
Processing Power
The Xeon 6781P packs 80 cores / 160 threads, while the EPYC 9555P offers 64 cores / 128 threads — the Xeon 6781P has 16 more cores. Boost clocks reach 3.8 GHz on the Xeon 6781P versus 4.4 GHz on the EPYC 9555P — a 14.6% clock advantage for the EPYC 9555P (base: 2 GHz vs 3.2 GHz). The Xeon 6781P uses the Granite Rapids (2024−2025) architecture (Intel 3 nm), while the EPYC 9555P uses Turin (2024) (4 nm). In PassMark, the Xeon 6781P scores 117,946 against the EPYC 9555P's 135,441 — a 13.8% lead for the EPYC 9555P. L3 cache: 336 MB (total) on the Xeon 6781P vs 256 MB (total) on the EPYC 9555P.
| Feature | Xeon 6781P | EPYC 9555P |
|---|---|---|
| Cores / Threads | 80 / 160+25% | 64 / 128 |
| Boost Clock | 3.8 GHz | 4.4 GHz+16% |
| Base Clock | 2 GHz | 3.2 GHz+60% |
| L3 Cache | 336 MB (total)+31% | 256 MB (total) |
| L2 Cache | 2 MB (per core)+100% | 1 MB (per core) |
| Process | Intel 3 nm-25% | 4 nm |
| Architecture | Granite Rapids (2024−2025) | Turin (2024) |
| PassMark | 117,946 | 135,441+15% |
| Geekbench 6 Single | — | 2,815 |
| Geekbench 6 Multi | — | 29,406 |
Memory & Platform
The Xeon 6781P uses the LGA4710 socket (PCIe 4.0), while the EPYC 9555P uses SP5 (PCIe 5.0) — making them incompatible on the same motherboard. Both support up to DDR5-6400 memory speed. The EPYC 9555P supports up to 6 TB of RAM compared to 4 TB — 40% more capacity for professional workloads. Memory channels: 8 (Xeon 6781P) vs 12 (EPYC 9555P). PCIe lanes: 136 (Xeon 6781P) vs 128 (EPYC 9555P) — the Xeon 6781P offers 8 more lanes for additional GPUs or NVMe drives.
| Feature | Xeon 6781P | EPYC 9555P |
|---|---|---|
| Socket | LGA4710 | SP5 |
| PCIe Generation | PCIe 4.0 | PCIe 5.0+25% |
| Max RAM Speed | DDR5-6400 | DDR5-6000 |
| Max RAM Capacity | 4 TB | 6 TB+50% |
| RAM Channels | 8 | 12+50% |
| ECC Support | ✅ | ✅ |
| PCIe Lanes | 136+6% | 128 |
Advanced Features
Virtualization support: VT-x, VT-d, VT-x EPT (Xeon 6781P) vs AMD-V, SEV-SNP (EPYC 9555P). Primary use case: Xeon 6781P targets Data Center / Cloud Scale, EPYC 9555P targets Data Center / Single Socket. Direct competitor: Xeon 6781P rivals EPYC 9655; EPYC 9555P rivals Xeon 6979P.
| Feature | Xeon 6781P | EPYC 9555P |
|---|---|---|
| Integrated GPU | No | No |
| Virtualization | VT-x, VT-d, VT-x EPT | AMD-V, SEV-SNP |
| Target Use | Data Center / Cloud Scale | Data Center / Single Socket |
Value Analysis
The Xeon 6781P launched at $8960 MSRP, while the EPYC 9555P debuted at $7983. At current prices ($8960 vs $6130), the EPYC 9555P is $2830 cheaper. In terms of value (PassMark points per dollar), the Xeon 6781P delivers 13.2 pts/$ vs 22.1 pts/$ for the EPYC 9555P — making the EPYC 9555P the 50.7% better value option.
| Feature | Xeon 6781P | EPYC 9555P |
|---|---|---|
| MSRP | $8960 | $7983-11% |
| Avg Price (30d) | $8960 | $6130-32% |
| Performance per Dollar | 13.2 | 22.1+67% |
| Release Date | 2025 | 2024 |
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