Core i9-7940X vs Xeon Gold 6142
Core i9-7940X
Xeon Gold 6142
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 Core i9-7940X
Performance Per Dollar Xeon Gold 6142
Performance Comparison
About PassMark🏆 Chipversus Verdict
🚀 Performance Leadership
| Insight | Core i9-7940X | Xeon Gold 6142 |
|---|---|---|
| Gaming | ✅ Superior gaming performance | ❌ Lower gaming performance |
| Workstation | ❌ Weaker in multi-core tasks | ✅ Better multi-core power |
| Price | ⚠️ Higher cost ($275) | ✅ More affordable ($0) |
| Longevity | ✨ Modern (Skylake (server) (2017−2018) / 14 nm) | ✨ Modern (Skylake (server) (2017−2018) / 14 nm) |
💎 Value Proposition
| Insight | Core i9-7940X | Xeon Gold 6142 |
|---|---|---|
| Cost Efficiency | ❌ Lower cost efficiency | ❌ Lower cost efficiency |
| Upfront Cost | ⚠️ Higher cost ($275) | ✅ More affordable ($0) |
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 Core i9-7940X and Xeon Gold 6142
Core i9-7940X
The Core i9-7940X is manufactured by Intel. It was released in 1 September 2017 (8 years ago). It is based on the Skylake (server) (2017−2018) architecture. It features 14 cores and 28 threads. Base frequency is 3.1 GHz, with boost up to 4.4 GHz. L3 cache: 19.25 MB (total). L2 cache: 1 MB (per core). Built on 14 nm process technology. Socket: LGA2066. Thermal design power (TDP): 165 Watt. Memory support: DDR4-2666. Passmark benchmark score: 25,452 points. Launch price was $1,399.
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.
Processing Power
The Core i9-7940X packs 14 cores / 28 threads, while the Xeon Gold 6142 offers 16 cores / 32 threads — the Xeon Gold 6142 has 2 more cores. Boost clocks reach 4.4 GHz on the Core i9-7940X versus 3.7 GHz on the Xeon Gold 6142 — a 17.3% clock advantage for the Core i9-7940X (base: 3.1 GHz vs 2.6 GHz). Both are built on the Skylake (server) (2017−2018) architecture using a 14 nm process. In PassMark, the Core i9-7940X scores 25,452 against the Xeon Gold 6142's 25,490 — a 0.1% lead for the Xeon Gold 6142. L3 cache: 19.25 MB (total) on the Core i9-7940X vs 22 MB on the Xeon Gold 6142.
| Feature | Core i9-7940X | Xeon Gold 6142 |
|---|---|---|
| Cores / Threads | 14 / 28 | 16 / 32+14% |
| Boost Clock | 4.4 GHz+19% | 3.7 GHz |
| Base Clock | 3.1 GHz+19% | 2.6 GHz |
| L3 Cache | 19.25 MB (total) | 22 MB+14% |
| L2 Cache | 1 MB (per core) | 16 MB+1500% |
| Process | 14 nm | 14 nm |
| Architecture | Skylake (server) (2017−2018) | Skylake (server) (2017−2018) |
| PassMark | 25,452 | 25,490 |
Memory & Platform
The Core i9-7940X uses the LGA2066 socket (PCIe 3.0), while the Xeon Gold 6142 uses LGA3647 (PCIe 3.0) — making them incompatible on the same motherboard.
| Feature | Core i9-7940X | Xeon Gold 6142 |
|---|---|---|
| Socket | LGA2066 | LGA3647 |
| PCIe Generation | PCIe 3.0 | PCIe 3.0 |
| Max RAM Speed | — | 2666 |
| Max RAM Capacity | — | 768 |
| RAM Channels | — | 6 |
| ECC Support | — | ✅ |
| PCIe Lanes | — | 48 |
Advanced Features
Virtualization: not specified (Core i9-7940X) / VT-x, VT-d (Xeon Gold 6142). Direct competitor: Xeon Gold 6142 rivals EPYC 7451.
| Feature | Core i9-7940X | Xeon Gold 6142 |
|---|---|---|
| Integrated GPU | — | No |
| IGPU Model | — | None |
| Unlocked | — | No |
| AVX-512 | — | Yes |
| Virtualization | — | VT-x, VT-d |
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