Xeon Gold 6142 vs Ryzen 9 5900X
Xeon Gold 6142
Ryzen 9 5900X
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 Ryzen 9 5900X
Performance Comparison
About PassMark🏆 Chipversus Verdict
🚀 Performance Leadership
| Insight | Xeon Gold 6142 | Ryzen 9 5900X |
|---|---|---|
| Gaming | ❌ Lower gaming performance | ✅ Superior gaming performance |
| Workstation | ❌ Weaker in multi-core tasks | ✅ Better multi-core power |
| Price | ✅ More affordable ($0) | ⚠️ Higher cost ($350) |
| Longevity | ✨ Modern (Skylake (server) (2017−2018) / 14 nm) | ✨ Modern (Vermeer (Zen3) (2020−2022) / 7 nm, 12 nm) |
💎 Value Proposition
| Insight | Xeon Gold 6142 | Ryzen 9 5900X |
|---|---|---|
| Cost Efficiency | ❌ Lower cost efficiency | ❌ Lower cost efficiency |
| Upfront Cost | ✅ More affordable ($0) | ⚠️ Higher cost ($350) |
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 Ryzen 9 5900X
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.
Ryzen 9 5900X
The Ryzen 9 5900X is manufactured by AMD. It was released in 5 November 2020 (5 years ago). It is based on the Vermeer (Zen3) (2020−2022) architecture. It features 12 cores and 24 threads. Base frequency is 3.7 GHz, with boost up to 4.8 GHz. L3 cache: 64 MB. L2 cache: 512K (per core). Built on 7 nm, 12 nm process technology. Socket: AM4. Thermal design power (TDP): 105 Watt. Memory support: DDR4-3200. Passmark benchmark score: 38,955 points. Launch price was $549.
Processing Power
The Xeon Gold 6142 packs 16 cores / 32 threads, while the Ryzen 9 5900X offers 12 cores / 24 threads — the Xeon Gold 6142 has 4 more cores. Boost clocks reach 3.7 GHz on the Xeon Gold 6142 versus 4.8 GHz on the Ryzen 9 5900X — a 25.9% clock advantage for the Ryzen 9 5900X (base: 2.6 GHz vs 3.7 GHz). The Xeon Gold 6142 uses the Skylake (server) (2017−2018) architecture (14 nm), while the Ryzen 9 5900X uses Vermeer (Zen3) (2020−2022) (7 nm, 12 nm). In PassMark, the Xeon Gold 6142 scores 25,490 against the Ryzen 9 5900X's 38,955 — a 41.8% lead for the Ryzen 9 5900X. L3 cache: 22 MB on the Xeon Gold 6142 vs 64 MB on the Ryzen 9 5900X.
| Feature | Xeon Gold 6142 | Ryzen 9 5900X |
|---|---|---|
| Cores / Threads | 16 / 32+33% | 12 / 24 |
| Boost Clock | 3.7 GHz | 4.8 GHz+30% |
| Base Clock | 2.6 GHz | 3.7 GHz+42% |
| L3 Cache | 22 MB | 64 MB+191% |
| L2 Cache | 16 MB+3100% | 512K (per core) |
| Process | 14 nm | 7 nm, 12 nm-50% |
| Architecture | Skylake (server) (2017−2018) | Vermeer (Zen3) (2020−2022) |
| PassMark | 25,490 | 38,955+53% |
| Cinebench R23 Multi | — | 21,000 |
| Geekbench 6 Single | — | 2,174 |
| Geekbench 6 Multi | — | 11,888 |
Memory & Platform
The Xeon Gold 6142 uses the LGA3647 socket (PCIe 3.0), while the Ryzen 9 5900X uses AM4 (PCIe 4.0) — making them incompatible on the same motherboard. Maximum memory speed reaches 2666 on the Xeon Gold 6142 versus DDR4-3200 on the Ryzen 9 5900X — the Xeon Gold 6142 supports 199.4% faster memory, which can translate to measurable gains in memory-sensitive workloads. The Xeon Gold 6142 supports up to 768 of RAM compared to 128 GB — 142.9% more capacity for professional workloads. Memory channels: 6 (Xeon Gold 6142) vs 2 (Ryzen 9 5900X). PCIe lanes: 48 (Xeon Gold 6142) vs 24 (Ryzen 9 5900X) — the Xeon Gold 6142 offers 24 more lanes for additional GPUs or NVMe drives. Chipset compatibility: C621 (Xeon Gold 6142) and A320,B350,X370,B450,X470,B550,X570 (Ryzen 9 5900X).
| Feature | Xeon Gold 6142 | Ryzen 9 5900X |
|---|---|---|
| Socket | LGA3647 | AM4 |
| PCIe Generation | PCIe 3.0 | PCIe 4.0+33% |
| Max RAM Speed | 2666+66550% | DDR4-3200 |
| Max RAM Capacity | 768 | 128 GB+17476167% |
| RAM Channels | 6+200% | 2 |
| ECC Support | ✅ | ✅ |
| PCIe Lanes | 48+100% | 24 |
Advanced Features
Only the Ryzen 9 5900X has an unlocked multiplier for overclocking — a significant advantage for enthusiasts seeking extra performance. Only the Xeon Gold 6142 supports AVX-512 instructions — important for machine learning and scientific applications. Virtualization support: VT-x, VT-d (Xeon Gold 6142) vs AMD-V (Ryzen 9 5900X). Primary use case: Ryzen 9 5900X targets Workstation. Direct competitor: Xeon Gold 6142 rivals EPYC 7451; Ryzen 9 5900X rivals Core i9-12900K.
| Feature | Xeon Gold 6142 | Ryzen 9 5900X |
|---|---|---|
| Integrated GPU | No | No |
| IGPU Model | None | — |
| Unlocked | No | Yes |
| AVX-512 | Yes | No |
| Virtualization | VT-x, VT-d | AMD-V |
| Target Use | — | Workstation |
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