Xeon Gold 6434 vs Core i9-9940X
Xeon Gold 6434
Core i9-9940X
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 6434
Performance Per Dollar Core i9-9940X
Performance Comparison
About PassMark🏆 Chipversus Verdict
🚀 Performance Leadership
| Insight | Xeon Gold 6434 | Core i9-9940X |
|---|---|---|
| Gaming | ❌ Lower gaming performance | ✅ Superior gaming performance |
| Workstation | ✅ Better multi-core power | ❌ Weaker in multi-core tasks |
| Price | ✅ More affordable ($0) | ⚠️ Higher cost ($850) |
| Longevity | ✨ Modern (Sapphire Rapids (2023−2024) / Intel 7 nm) | ✨ Modern (Skylake (server) (2017−2018) / 14 nm) |
💎 Value Proposition
| Insight | Xeon Gold 6434 | Core i9-9940X |
|---|---|---|
| Cost Efficiency | ❌ Lower cost efficiency | ❌ Lower cost efficiency |
| Upfront Cost | ✅ More affordable ($0) | ⚠️ Higher cost ($850) |
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 6434 and Core i9-9940X
Xeon Gold 6434
The Xeon Gold 6434 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 8 cores and 16 threads. Base frequency is 3.7 GHz, with boost up to 4.1 GHz. L3 cache: 22.5 MB. L2 cache: 2 MB (per core). Built on Intel 7 nm process technology. Socket: LGA4677. Thermal design power (TDP): 195 Watt. Memory support: DDR5-4800, DDR5-4400. Passmark benchmark score: 28,111 points. Launch price was $2,607.
Core i9-9940X
The Core i9-9940X is manufactured by Intel. It was released in 19 October 2018 (7 years ago). It is based on the Skylake (server) (2017−2018) architecture. It features 14 cores and 28 threads. Base frequency is 3.3 GHz, with boost up to 4.5 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: 28,088 points. Launch price was $1,387.
Processing Power
The Xeon Gold 6434 packs 8 cores / 16 threads, while the Core i9-9940X offers 14 cores / 28 threads — the Core i9-9940X has 6 more cores. Boost clocks reach 4.1 GHz on the Xeon Gold 6434 versus 4.5 GHz on the Core i9-9940X — a 9.3% clock advantage for the Core i9-9940X (base: 3.7 GHz vs 3.3 GHz). The Xeon Gold 6434 uses the Sapphire Rapids (2023−2024) architecture (Intel 7 nm), while the Core i9-9940X uses Skylake (server) (2017−2018) (14 nm). In PassMark, the Xeon Gold 6434 scores 28,111 against the Core i9-9940X's 28,088 — a 0.1% lead for the Xeon Gold 6434. L3 cache: 22.5 MB on the Xeon Gold 6434 vs 19.25 MB (total) on the Core i9-9940X.
| Feature | Xeon Gold 6434 | Core i9-9940X |
|---|---|---|
| Cores / Threads | 8 / 16 | 14 / 28+75% |
| Boost Clock | 4.1 GHz | 4.5 GHz+10% |
| Base Clock | 3.7 GHz+12% | 3.3 GHz |
| L3 Cache | 22.5 MB+17% | 19.25 MB (total) |
| L2 Cache | 2 MB (per core)+100% | 1 MB (per core) |
| Process | Intel 7 nm-50% | 14 nm |
| Architecture | Sapphire Rapids (2023−2024) | Skylake (server) (2017−2018) |
| PassMark | 28,111 | 28,088 |
| Cinebench R23 Multi | 17,500 | — |
| Geekbench 6 Single | 2,098 | — |
| Geekbench 6 Multi | 12,000 | — |
Memory & Platform
The Xeon Gold 6434 uses the LGA4677 socket (PCIe 5.0), while the Core i9-9940X uses LGA2066 (PCIe 3.0) — making them incompatible on the same motherboard. Maximum memory speed reaches DDR5-4800 on the Xeon Gold 6434 versus DDR4-2666 on the Core i9-9940X — the Xeon Gold 6434 supports 22.2% faster memory, which can translate to measurable gains in memory-sensitive workloads. The Xeon Gold 6434 supports up to 4096 GB of RAM compared to 128 GB — 187.9% more capacity for professional workloads. Memory channels: 8 (Xeon Gold 6434) vs 4 (Core i9-9940X). PCIe lanes: 80 (Xeon Gold 6434) vs 44 (Core i9-9940X) — the Xeon Gold 6434 offers 36 more lanes for additional GPUs or NVMe drives.
| Feature | Xeon Gold 6434 | Core i9-9940X |
|---|---|---|
| Socket | LGA4677 | LGA2066 |
| PCIe Generation | PCIe 5.0+67% | PCIe 3.0 |
| Max RAM Speed | DDR5-4800+25% | DDR4-2666 |
| Max RAM Capacity | 4096 GB+3100% | 128 GB |
| RAM Channels | 8+100% | 4 |
| ECC Support | ✅ | ❌ |
| PCIe Lanes | 80+82% | 44 |
Advanced Features
Only the Core i9-9940X has an unlocked multiplier for overclocking — a significant advantage for enthusiasts seeking extra performance. Both support AVX-512 instructions, benefiting scientific computing, AI inference, and encryption workloads. Virtualization support: VT-x, VT-d, AMX (Xeon Gold 6434) vs VT-x, VT-d (Core i9-9940X). Primary use case: Xeon Gold 6434 targets Frequency-optimized Server Compute, Core i9-9940X targets Workstation. Direct competitor: Xeon Gold 6434 rivals EPYC 9174F.
| Feature | Xeon Gold 6434 | Core i9-9940X |
|---|---|---|
| Integrated GPU | No | No |
| Unlocked | No | Yes |
| AVX-512 | Yes | Yes |
| Virtualization | VT-x, VT-d, AMX | VT-x, VT-d |
| Target Use | Frequency-optimized Server Compute | Workstation |
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