Xeon Gold 6138T vs Ryzen 5 8640U
Xeon Gold 6138T
Ryzen 5 8640U
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 6138T
Performance Per Dollar
Performance Comparison
About PassMark🏆 Chipversus Verdict
🚀 Performance Leadership
| Insight | Xeon Gold 6138T | Ryzen 5 8640U |
|---|---|---|
| Gaming | ❌ Lower gaming performance | ✅ Superior gaming performance |
| Workstation | ✅ Better multi-core power | ❌ Weaker in multi-core tasks |
| Price | ⚠️ Higher cost ($400) | ✅ More affordable ($0) |
| Longevity | ✨ Modern (Skylake (server) (2017−2018) / 14 nm) | ✨ Modern (Hawk Point-U (Zen 4) (2023−2025) / 4 nm) |
💎 Value Proposition
| Insight | Xeon Gold 6138T | Ryzen 5 8640U |
|---|---|---|
| Cost Efficiency | ❌ Lower cost efficiency | ❌ Lower cost efficiency |
| Upfront Cost | ⚠️ Higher cost ($400) | ✅ 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 Xeon Gold 6138T and Ryzen 5 8640U
Xeon Gold 6138T
The Xeon Gold 6138T 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 20 cores and 40 threads. Base frequency is 2 GHz, with boost up to 3.7 GHz. L3 cache: 27.5 MB. L2 cache: 20 MB. Built on 14 nm process technology. Socket: LGA3647. Thermal design power (TDP): 125 Watt. Memory support: DDR4-2666. Passmark benchmark score: 20,356 points. Launch price was $2,742.
Ryzen 5 8640U
The Ryzen 5 8640U is manufactured by AMD. It was released in 6 December 2023 (1 year ago). It is based on the Hawk Point-U (Zen 4) (2023−2025) architecture. It features 6 cores and 12 threads. Base frequency is 3.5 GHz, with boost up to 4.9 GHz. L3 cache: 16 MB (total). L2 cache: 1 MB (per core). Built on 4 nm process technology. Socket: FP8. Thermal design power (TDP): 28 Watt. Memory support: DDR5. Passmark benchmark score: 20,274 points. Launch price was $299.
Processing Power
The Xeon Gold 6138T packs 20 cores / 40 threads, while the Ryzen 5 8640U offers 6 cores / 12 threads — the Xeon Gold 6138T has 14 more cores. Boost clocks reach 3.7 GHz on the Xeon Gold 6138T versus 4.9 GHz on the Ryzen 5 8640U — a 27.9% clock advantage for the Ryzen 5 8640U (base: 2 GHz vs 3.5 GHz). The Xeon Gold 6138T uses the Skylake (server) (2017−2018) architecture (14 nm), while the Ryzen 5 8640U uses Hawk Point-U (Zen 4) (2023−2025) (4 nm). In PassMark, the Xeon Gold 6138T scores 20,356 against the Ryzen 5 8640U's 20,274 — a 0.4% lead for the Xeon Gold 6138T. Geekbench 6 single-core — the metric most relevant to gaming — records 1,030 vs 2,519, a 83.9% lead for the Ryzen 5 8640U that directly translates to higher frame rates. Multi-core Geekbench: 11,988 vs 10,308 (15.1% advantage for the Xeon Gold 6138T). L3 cache: 27.5 MB on the Xeon Gold 6138T vs 16 MB (total) on the Ryzen 5 8640U.
| Feature | Xeon Gold 6138T | Ryzen 5 8640U |
|---|---|---|
| Cores / Threads | 20 / 40+233% | 6 / 12 |
| Boost Clock | 3.7 GHz | 4.9 GHz+32% |
| Base Clock | 2 GHz | 3.5 GHz+75% |
| L3 Cache | 27.5 MB+72% | 16 MB (total) |
| L2 Cache | 20 MB+1900% | 1 MB (per core) |
| Process | 14 nm | 4 nm-71% |
| Architecture | Skylake (server) (2017−2018) | Hawk Point-U (Zen 4) (2023−2025) |
| PassMark | 20,356 | 20,274 |
| Cinebench R23 Multi | — | 10,675 |
| Geekbench 6 Single | 1,030 | 2,519+145% |
| Geekbench 6 Multi | 11,988+16% | 10,308 |
Memory & Platform
The Xeon Gold 6138T uses the LGA3647 socket (PCIe 3.0), while the Ryzen 5 8640U uses FP8 (PCIe 4.0) — making them incompatible on the same motherboard. Maximum memory speed reaches DDR4-2666 on the Xeon Gold 6138T versus LPDDR5x-7500 on the Ryzen 5 8640U — the Ryzen 5 8640U supports 22.2% faster memory, which can translate to measurable gains in memory-sensitive workloads. The Xeon Gold 6138T supports up to 768 GB of RAM compared to 256 GB — 100% more capacity for professional workloads. Memory channels: 6 (Xeon Gold 6138T) vs 2 (Ryzen 5 8640U). PCIe lanes: 48 (Xeon Gold 6138T) vs 20 (Ryzen 5 8640U) — the Xeon Gold 6138T offers 28 more lanes for additional GPUs or NVMe drives. Chipset compatibility: C620 (Xeon Gold 6138T) and SoC (Ryzen 5 8640U).
| Feature | Xeon Gold 6138T | Ryzen 5 8640U |
|---|---|---|
| Socket | LGA3647 | FP8 |
| PCIe Generation | PCIe 3.0 | PCIe 4.0+33% |
| Max RAM Speed | DDR4-2666 | LPDDR5x-7500+25% |
| Max RAM Capacity | 768 GB+200% | 256 GB |
| RAM Channels | 6+200% | 2 |
| ECC Support | ✅ | ✅ |
| PCIe Lanes | 48+140% | 20 |
Advanced Features
Both support AVX-512 instructions, benefiting scientific computing, AI inference, and encryption workloads. Virtualization support: Yes (Xeon Gold 6138T) vs AMD-V (SVM) (Ryzen 5 8640U). The Ryzen 5 8640U includes integrated graphics (Radeon 760M), while the Xeon Gold 6138T requires a dedicated GPU. Primary use case: Ryzen 5 8640U targets Productivity. Direct competitor: Ryzen 5 8640U rivals Core i5-1335U.
| Feature | Xeon Gold 6138T | Ryzen 5 8640U |
|---|---|---|
| Integrated GPU | No | Yes |
| IGPU Model | — | Radeon 760M |
| Unlocked | — | No |
| AVX-512 | Yes | Yes |
| Virtualization | Yes | AMD-V (SVM) |
| Target Use | — | Productivity |
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