Ryzen 9 7940H vs Ryzen 9 5900X
Ryzen 9 7940H
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
Performance Per Dollar Ryzen 9 5900X
Performance Comparison
About PassMark🏆 Chipversus Verdict
🚀 Performance Leadership
| Insight | Ryzen 9 7940H | Ryzen 9 5900X |
|---|---|---|
| Gaming | ✅ Superior gaming performance | ❌ Lower gaming performance |
| Workstation | ❌ Weaker in multi-core tasks | ✅ Better multi-core power |
| Price | ✅ More affordable ($0) | ⚠️ Higher cost ($350) |
| Longevity | ✨ Modern (Phoenix (2023−2024) / 4 nm) | ✨ Modern (Vermeer (Zen3) (2020−2022) / 7 nm, 12 nm) |
💎 Value Proposition
| Insight | Ryzen 9 7940H | 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 Ryzen 9 7940H and Ryzen 9 5900X
Ryzen 9 7940H
The Ryzen 9 7940H is manufactured by AMD. It was released in Janeiro 2023 (2 years ago). It is based on the Phoenix (2023−2024) architecture. It features 8 cores and 16 threads. Base frequency is 4 GHz, with boost up to 5.2 GHz. L3 cache: 16 MB (total). L2 cache: 1 MB (per core). Built on 4 nm process technology. Socket: FP8. Thermal design power (TDP): 35 Watt. Memory support: DDR5-5600. Passmark benchmark score: 29,151 points. Launch price was $299.
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 Ryzen 9 7940H packs 8 cores / 16 threads, while the Ryzen 9 5900X offers 12 cores / 24 threads — the Ryzen 9 5900X has 4 more cores. Boost clocks reach 5.2 GHz on the Ryzen 9 7940H versus 4.8 GHz on the Ryzen 9 5900X — a 8% clock advantage for the Ryzen 9 7940H (base: 4 GHz vs 3.7 GHz). The Ryzen 9 7940H uses the Phoenix (2023−2024) architecture (4 nm), while the Ryzen 9 5900X uses Vermeer (Zen3) (2020−2022) (7 nm, 12 nm). In PassMark, the Ryzen 9 7940H scores 29,151 against the Ryzen 9 5900X's 38,955 — a 28.8% lead for the Ryzen 9 5900X. Cinebench R23 multi-core: 17,200 vs 21,000 (19.9% advantage for the Ryzen 9 5900X). Geekbench 6 single-core — the metric most relevant to gaming — records 2,646 vs 2,174, a 19.6% lead for the Ryzen 9 7940H that directly translates to higher frame rates. Multi-core Geekbench: 13,495 vs 11,888 (12.7% advantage for the Ryzen 9 7940H). L3 cache: 16 MB (total) on the Ryzen 9 7940H vs 64 MB on the Ryzen 9 5900X.
| Feature | Ryzen 9 7940H | Ryzen 9 5900X |
|---|---|---|
| Cores / Threads | 8 / 16 | 12 / 24+50% |
| Boost Clock | 5.2 GHz+8% | 4.8 GHz |
| Base Clock | 4 GHz+8% | 3.7 GHz |
| L3 Cache | 16 MB (total) | 64 MB+300% |
| L2 Cache | 1 MB (per core)+100% | 512K (per core) |
| Process | 4 nm-43% | 7 nm, 12 nm |
| Architecture | Phoenix (2023−2024) | Vermeer (Zen3) (2020−2022) |
| PassMark | 29,151 | 38,955+34% |
| Cinebench R23 Multi | 17,200 | 21,000+22% |
| Geekbench 6 Single | 2,646+22% | 2,174 |
| Geekbench 6 Multi | 13,495+14% | 11,888 |
Memory & Platform
The Ryzen 9 7940H uses the FP8 socket (PCIe 4.0), while the Ryzen 9 5900X uses AM4 (PCIe 4.0) — making them incompatible on the same motherboard. Maximum memory speed reaches DDR5-5600 on the Ryzen 9 7940H versus DDR4-3200 on the Ryzen 9 5900X — the Ryzen 9 7940H supports 22.2% faster memory, which can translate to measurable gains in memory-sensitive workloads. The Ryzen 9 7940H supports up to 256 GB of RAM compared to 128 GB — 66.7% more capacity for professional workloads. Both feature 2-channel memory with ECC support. PCIe lanes: 20 (Ryzen 9 7940H) vs 24 (Ryzen 9 5900X) — the Ryzen 9 5900X offers 4 more lanes for additional GPUs or NVMe drives. Chipset compatibility: FP7,FP7r2,FP8 (Ryzen 9 7940H) and A320,B350,X370,B450,X470,B550,X570 (Ryzen 9 5900X).
| Feature | Ryzen 9 7940H | Ryzen 9 5900X |
|---|---|---|
| Socket | FP8 | AM4 |
| PCIe Generation | PCIe 4.0 | PCIe 4.0 |
| Max RAM Speed | DDR5-5600+25% | DDR4-3200 |
| Max RAM Capacity | 256 GB+100% | 128 GB |
| RAM Channels | 2 | 2 |
| ECC Support | ✅ | ✅ |
| PCIe Lanes | 20 | 24+20% |
Advanced Features
Both processors feature an unlocked multiplier for overclocking. Only the Ryzen 9 7940H supports AVX-512 instructions — important for machine learning and scientific applications. Virtualization support: AMD-V, SVM (Ryzen 9 7940H) vs AMD-V (Ryzen 9 5900X). The Ryzen 9 7940H includes integrated graphics (Radeon 780M), while the Ryzen 9 5900X requires a dedicated GPU. Primary use case: Ryzen 9 7940H targets High-performance Gaming Laptop, Ryzen 9 5900X targets Workstation. Direct competitor: Ryzen 9 7940H rivals Core i9-13900H; Ryzen 9 5900X rivals Core i9-12900K.
| Feature | Ryzen 9 7940H | Ryzen 9 5900X |
|---|---|---|
| Integrated GPU | Yes | No |
| IGPU Model | Radeon 780M | — |
| Unlocked | Yes | Yes |
| AVX-512 | Yes | No |
| Virtualization | AMD-V, SVM | AMD-V |
| Target Use | High-performance Gaming Laptop | Workstation |
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