Xeon Gold 6142 vs EPYC 7551
Xeon Gold 6142
EPYC 7551
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 6142
Performance Per Dollar EPYC 7551
Performance Comparison
About PassMark🏆 Chipversus Verdict
🚀 Performance Leadership
| Insight | Xeon Gold 6142 | EPYC 7551 |
|---|---|---|
| Gaming | ✅ Superior gaming performance | ❌ Lower gaming performance |
| Workstation | ❌ Weaker in multi-core tasks | ✅ Better multi-core power |
| Price | Equivalent pricing | Equivalent pricing |
| Longevity | ✨ Modern (Skylake (server) (2017−2018) / 14 nm) | ✨ Modern (Naples (2017−2018) / 14 nm) |
💎 Value Proposition
| Insight | Xeon Gold 6142 | EPYC 7551 |
|---|---|---|
| Cost Efficiency | ❌ Lower cost efficiency | ❌ Lower cost efficiency |
| Upfront Cost | Equivalent pricing | Equivalent pricing |
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 6142 and EPYC 7551
Xeon Gold 6142
The Xeon Gold 6142 is manufactured by Intel. It was released in 25 April 2017 (8 years ago). It is based on the Skylake (server) (2017−2018) architecture. It features 16 cores and 32 threads. Base frequency is 2.6 GHz, with boost up to 3.7 GHz. L3 cache: 22 MB. L2 cache: 16 MB. Built on 14 nm process technology. Socket: LGA3647. Thermal design power (TDP): 150 Watt. Memory support: DDR4-2666. Passmark benchmark score: 25,490 points. Launch price was $2,946.
EPYC 7551
The EPYC 7551 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: 25,844 points. Launch price was $3,400.
Processing Power
The Xeon Gold 6142 packs 16 cores / 32 threads, while the EPYC 7551 offers 32 cores / 64 threads — the EPYC 7551 has 16 more cores. Boost clocks reach 3.7 GHz on the Xeon Gold 6142 versus 3 GHz on the EPYC 7551 — a 20.9% clock advantage for the Xeon Gold 6142 (base: 2.6 GHz vs 2 GHz). The Xeon Gold 6142 uses the Skylake (server) (2017−2018) architecture (14 nm), while the EPYC 7551 uses Naples (2017−2018) (14 nm). In PassMark, the Xeon Gold 6142 scores 25,490 against the EPYC 7551's 25,844 — a 1.4% lead for the EPYC 7551. L3 cache: 22 MB on the Xeon Gold 6142 vs 64 MB (total) on the EPYC 7551.
| Feature | Xeon Gold 6142 | EPYC 7551 |
|---|---|---|
| Cores / Threads | 16 / 32 | 32 / 64+100% |
| Boost Clock | 3.7 GHz+23% | 3 GHz |
| Base Clock | 2.6 GHz+30% | 2 GHz |
| L3 Cache | 22 MB | 64 MB (total)+191% |
| L2 Cache | 16 MB+3100% | 512K (per core) |
| Process | 14 nm | 14 nm |
| Architecture | Skylake (server) (2017−2018) | Naples (2017−2018) |
| PassMark | 25,490 | 25,844+1% |
Memory & Platform
The Xeon Gold 6142 uses the LGA3647 socket (PCIe 3.0), while the EPYC 7551 uses TR4 (PCIe 4.0) — making them incompatible on the same motherboard.
| Feature | Xeon Gold 6142 | EPYC 7551 |
|---|---|---|
| Socket | LGA3647 | TR4 |
| PCIe Generation | PCIe 3.0 | PCIe 4.0+33% |
| Max RAM Speed | 2666 | — |
| Max RAM Capacity | 768 | — |
| RAM Channels | 6 | — |
| ECC Support | ✅ | — |
| PCIe Lanes | 48 | — |
Advanced Features
Virtualization: VT-x, VT-d (Xeon Gold 6142) / not specified (EPYC 7551). Direct competitor: Xeon Gold 6142 rivals EPYC 7451.
| Feature | Xeon Gold 6142 | EPYC 7551 |
|---|---|---|
| Integrated GPU | No | — |
| IGPU Model | None | — |
| Unlocked | No | — |
| AVX-512 | Yes | — |
| Virtualization | VT-x, VT-d | — |
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