Xeon 6781P vs EPYC 9555
Xeon 6781P
EPYC 9555
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 9555
Performance Comparison
About PassMark🏆 Chipversus Verdict
🚀 Performance Leadership
| Insight | Xeon 6781P | EPYC 9555 |
|---|---|---|
| Gaming | ❌ Lower gaming performance | ✅ Superior gaming performance |
| Workstation | ❌ Weaker in multi-core tasks | ✅ Better multi-core power |
| Price | ⚠️ Higher cost ($8,960) | ✅ More affordable ($7,973) |
| Longevity | ✨ Modern (Granite Rapids (2024−2025) / Intel 3 nm) | ✨ Modern (Turin (2024) / 4 nm) |
💎 Value Proposition
| Insight | Xeon 6781P | EPYC 9555 |
|---|---|---|
| Cost Efficiency | ❌ Lower cost efficiency | ✅ Better overall value (+27%) |
| Upfront Cost | ⚠️ Higher cost ($8,960) | ✅ More affordable ($7,973) |
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 9555
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 9555
The EPYC 9555 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: 133,253 points. Launch price was $9,826.
Processing Power
The Xeon 6781P packs 80 cores / 160 threads, while the EPYC 9555 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 9555 — a 14.6% clock advantage for the EPYC 9555 (base: 2 GHz vs 3.2 GHz). The Xeon 6781P uses the Granite Rapids (2024−2025) architecture (Intel 3 nm), while the EPYC 9555 uses Turin (2024) (4 nm). In PassMark, the Xeon 6781P scores 117,946 against the EPYC 9555's 133,253 — a 12.2% lead for the EPYC 9555. L3 cache: 336 MB (total) on the Xeon 6781P vs 256 MB (total) on the EPYC 9555.
| Feature | Xeon 6781P | EPYC 9555 |
|---|---|---|
| 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 | 133,253+13% |
Memory & Platform
The Xeon 6781P uses the LGA4710 socket (PCIe 4.0), while the EPYC 9555 uses SP5 (PCIe 5.0) — making them incompatible on the same motherboard. Both support up to DDR5-6400 memory speed. The EPYC 9555 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 9555). PCIe lanes: 136 (Xeon 6781P) vs 128 (EPYC 9555) — the Xeon 6781P offers 8 more lanes for additional GPUs or NVMe drives.
| Feature | Xeon 6781P | EPYC 9555 |
|---|---|---|
| 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 9555). Primary use case: Xeon 6781P targets Data Center / Cloud Scale, EPYC 9555 targets Data Center. Direct competitor: Xeon 6781P rivals EPYC 9655; EPYC 9555 rivals Xeon 6972P.
| Feature | Xeon 6781P | EPYC 9555 |
|---|---|---|
| Integrated GPU | No | No |
| Virtualization | VT-x, VT-d, VT-x EPT | AMD-V, SEV-SNP |
| Target Use | Data Center / Cloud Scale | Data Center |
Value Analysis
The Xeon 6781P launched at $8960 MSRP, while the EPYC 9555 debuted at $9826. At current prices ($8960 vs $7973), the EPYC 9555 is $987 cheaper. In terms of value (PassMark points per dollar), the Xeon 6781P delivers 13.2 pts/$ vs 16.7 pts/$ for the EPYC 9555 — making the EPYC 9555 the 23.8% better value option.
| Feature | Xeon 6781P | EPYC 9555 |
|---|---|---|
| MSRP | $8960-9% | $9826 |
| Avg Price (30d) | $8960 | $7973-11% |
| Performance per Dollar | 13.2 | 16.7+27% |
| Release Date | 2025 | 2024 |
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