Xeon Gold 6426Y vs EPYC 7551P
Xeon Gold 6426Y
EPYC 7551P
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 Gold 6426Y
Performance Per Dollar EPYC 7551P
Performance Comparison
About PassMark🏆 Chipversus Verdict
🚀 Performance Leadership
| Insight | Xeon Gold 6426Y | EPYC 7551P |
|---|---|---|
| Gaming | ✅ Superior gaming performance | ❌ Lower gaming performance |
| Workstation | ❌ Weaker in multi-core tasks | ✅ Better multi-core power |
| Price | ⚠️ Higher cost ($2,145) | ✅ More affordable ($329) |
| Longevity | ✨ Modern (Sapphire Rapids (2023−2024) / Intel 7 nm) | ✨ Modern (Naples (2017−2018) / 14 nm) |
💎 Value Proposition
| Insight | Xeon Gold 6426Y | EPYC 7551P |
|---|---|---|
| Cost Efficiency | ❌ Lower cost efficiency | ✅ Better overall value (+555%) |
| Upfront Cost | ⚠️ Higher cost ($2,145) | ✅ More affordable ($329) |
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 Gold 6426Y and EPYC 7551P
Xeon Gold 6426Y
The Xeon Gold 6426Y 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 16 cores and 32 threads. Base frequency is 2.5 GHz, with boost up to 4.1 GHz. L3 cache: 37.5 MB. L2 cache: 2 MB (per core). Built on Intel 7 nm process technology. Socket: LGA4677. Thermal design power (TDP): 185 Watt. Memory support: DDR5-4800, DDR5-4400. Passmark benchmark score: 37,944 points. Launch price was $1,517.
EPYC 7551P
The EPYC 7551P is manufactured by AMD. It was released in 29 June 2017 (8 years ago). It is based on the Naples (2017−2018) architecture. It features 32 cores and 64 threads. Base frequency is 2 GHz, with boost up to 3 GHz. L3 cache: 64 MB (total). L2 cache: 512K (per core). Built on 14 nm process technology. Socket: TR4. Thermal design power (TDP): 180 Watt. Memory support: DDR4 Eight-channel. Passmark benchmark score: 38,111 points. Launch price was $2,100.
Processing Power
The Xeon Gold 6426Y packs 16 cores / 32 threads, while the EPYC 7551P offers 32 cores / 64 threads — the EPYC 7551P has 16 more cores. Boost clocks reach 4.1 GHz on the Xeon Gold 6426Y versus 3 GHz on the EPYC 7551P — a 31% clock advantage for the Xeon Gold 6426Y (base: 2.5 GHz vs 2 GHz). The Xeon Gold 6426Y uses the Sapphire Rapids (2023−2024) architecture (Intel 7 nm), while the EPYC 7551P uses Naples (2017−2018) (14 nm). In PassMark, the Xeon Gold 6426Y scores 37,944 against the EPYC 7551P's 38,111 — a 0.4% lead for the EPYC 7551P. L3 cache: 37.5 MB on the Xeon Gold 6426Y vs 64 MB (total) on the EPYC 7551P.
| Feature | Xeon Gold 6426Y | EPYC 7551P |
|---|---|---|
| Cores / Threads | 16 / 32 | 32 / 64+100% |
| Boost Clock | 4.1 GHz+37% | 3 GHz |
| Base Clock | 2.5 GHz+25% | 2 GHz |
| L3 Cache | 37.5 MB | 64 MB (total)+71% |
| L2 Cache | 2 MB (per core)+300% | 512K (per core) |
| Process | Intel 7 nm-50% | 14 nm |
| Architecture | Sapphire Rapids (2023−2024) | Naples (2017−2018) |
| PassMark | 37,944 | 38,111 |
Memory & Platform
The Xeon Gold 6426Y uses the LGA4677 socket (PCIe 5.0), while the EPYC 7551P uses TR4 (PCIe 4.0) — making them incompatible on the same motherboard. Maximum memory speed reaches 4800 on the Xeon Gold 6426Y versus 2666 on the EPYC 7551P — the Xeon Gold 6426Y supports 57.2% faster memory, which can translate to measurable gains in memory-sensitive workloads. The Xeon Gold 6426Y supports up to 4096 of RAM compared to 2048 — 66.7% more capacity for professional workloads. Both feature 8-channel memory with ECC support. PCIe lanes: 80 (Xeon Gold 6426Y) vs 128 (EPYC 7551P) — the EPYC 7551P offers 48 more lanes for additional GPUs or NVMe drives. Chipset compatibility: LGA4677 (Xeon Gold 6426Y) and SP3 (EPYC 7551P).
| Feature | Xeon Gold 6426Y | EPYC 7551P |
|---|---|---|
| Socket | LGA4677 | TR4 |
| PCIe Generation | PCIe 5.0+25% | PCIe 4.0 |
| Max RAM Speed | 4800+80% | 2666 |
| Max RAM Capacity | 4096+100% | 2048 |
| RAM Channels | 8 | 8 |
| ECC Support | ✅ | ✅ |
| PCIe Lanes | 80 | 128+60% |
Advanced Features
Neither processor supports overclocking. Both support AVX-512 instructions, benefiting scientific computing, AI inference, and encryption workloads. Virtualization support: VT-x, VT-d (Xeon Gold 6426Y) vs AMD-V, IOMMU (EPYC 7551P). Direct competitor: Xeon Gold 6426Y rivals EPYC 8124P; EPYC 7551P rivals Xeon Platinum 8160.
| Feature | Xeon Gold 6426Y | EPYC 7551P |
|---|---|---|
| Integrated GPU | No | No |
| IGPU Model | None | None |
| Unlocked | No | No |
| AVX-512 | Yes | Yes |
| Virtualization | VT-x, VT-d | AMD-V, IOMMU |
Value Analysis
The Xeon Gold 6426Y launched at $2145 MSRP, while the EPYC 7551P debuted at $2100.
| Feature | Xeon Gold 6426Y | EPYC 7551P |
|---|---|---|
| MSRP | $2145 | $2100-2% |
| Avg Price (30d) | — | $329 |
| Release Date | 2023 | 2017 |
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