Ryzen 9 7900X vs Ryzen 9 8940HX
Ryzen 9 7900X
Ryzen 9 8940HX
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 Ryzen 9 7900X
Performance Per Dollar Ryzen 9 8940HX
Performance Comparison
About PassMark🏆 Chipversus Verdict
🚀 Performance Leadership
| Insight | Ryzen 9 7900X | Ryzen 9 8940HX |
|---|---|---|
| Gaming | ✅ Superior gaming performance | ❌ Lower gaming performance |
| Workstation | ✅ Better multi-core power | ❌ Weaker in multi-core tasks |
| Price | ⚠️ Higher cost ($316) | ✅ More affordable ($0) |
| Longevity | ✨ Modern (Raphael (Zen4) (2022−2023) / 5 nm) | ✨ Modern (Dragon Range (2025) / 5 nm) |
💎 Value Proposition
| Insight | Ryzen 9 7900X | Ryzen 9 8940HX |
|---|---|---|
| Cost Efficiency | ❌ Lower cost efficiency | ❌ Lower cost efficiency |
| Upfront Cost | ⚠️ Higher cost ($316) | ✅ 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 Ryzen 9 7900X and Ryzen 9 8940HX
Ryzen 9 7900X
The Ryzen 9 7900X is manufactured by AMD. It was released in 2022-09-27. It is based on the Raphael (Zen4) (2022−2023) architecture. It features 12 cores and 24 threads. Base frequency is 4.7 GHz, with boost up to 5.6 GHz. L3 cache: 64 MB (total). L2 cache: 1 MB (per core). Built on 5 nm process technology. Socket: AM5. Thermal design power (TDP): 170 Watt. Memory support: DDR5-5200. Passmark benchmark score: 51,329 points. Launch price was $549.
Ryzen 9 8940HX
The Ryzen 9 8940HX is manufactured by AMD. It was released in 23 April 2025 (less than a year ago). It is based on the Dragon Range (2025) architecture. It features 16 cores and 32 threads. Base frequency is 2.4 GHz, with boost up to 5.3 GHz. L3 cache: 64 MB (total). L2 cache: 1 MB (per core). Built on 5 nm process technology. Socket: FL1. Thermal design power (TDP): 55 Watt. Memory support: DDR5. Passmark benchmark score: 51,161 points. Launch price was $499.
Processing Power
The Ryzen 9 7900X packs 12 cores / 24 threads, while the Ryzen 9 8940HX offers 16 cores / 32 threads — the Ryzen 9 8940HX has 4 more cores. Boost clocks reach 5.6 GHz on the Ryzen 9 7900X versus 5.3 GHz on the Ryzen 9 8940HX — a 5.5% clock advantage for the Ryzen 9 7900X (base: 4.7 GHz vs 2.4 GHz). The Ryzen 9 7900X uses the Raphael (Zen4) (2022−2023) architecture (5 nm), while the Ryzen 9 8940HX uses Dragon Range (2025) (5 nm). In PassMark, the Ryzen 9 7900X scores 51,329 against the Ryzen 9 8940HX's 51,161 — a 0.3% lead for the Ryzen 9 7900X. Both processors carry 64 MB (total) of L3 cache.
| Feature | Ryzen 9 7900X | Ryzen 9 8940HX |
|---|---|---|
| Cores / Threads | 12 / 24 | 16 / 32+33% |
| Boost Clock | 5.6 GHz+6% | 5.3 GHz |
| Base Clock | 4.7 GHz+96% | 2.4 GHz |
| L3 Cache | 64 MB (total) | 64 MB (total) |
| L2 Cache | 1 MB (per core) | 1 MB (per core) |
| Process | 5 nm | 5 nm |
| Architecture | Raphael (Zen4) (2022−2023) | Dragon Range (2025) |
| PassMark | 51,329 | 51,161 |
| Cinebench R23 Multi | 29,557 | — |
| Geekbench 6 Single | — | 2,800 |
| Geekbench 6 Multi | — | 16,000 |
Memory & Platform
The Ryzen 9 7900X uses the AM5 socket (PCIe 5.0), while the Ryzen 9 8940HX uses FL1 (PCIe 5.0) — making them incompatible on the same motherboard. Both support up to DDR5-5200 memory speed. The Ryzen 9 7900X supports up to 128 GB of RAM compared to 64 GB — 66.7% more capacity for professional workloads. Both feature 2-channel memory with ECC support. Both provide 28 PCIe lanes. Chipset compatibility: AM5 (Ryzen 9 7900X) and AMD FL1 (Ryzen 9 8940HX).
| Feature | Ryzen 9 7900X | Ryzen 9 8940HX |
|---|---|---|
| Socket | AM5 | FL1 |
| PCIe Generation | PCIe 5.0 | PCIe 5.0 |
| Max RAM Speed | DDR5-5200 | DDR5-5200 |
| Max RAM Capacity | 128 GB+100% | 64 GB |
| RAM Channels | 2 | 2 |
| ECC Support | ✅ | ❌ |
| PCIe Lanes | 28 | 28 |
Advanced Features
Only the Ryzen 9 7900X 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: AMD-V (Ryzen 9 7900X) vs true (Ryzen 9 8940HX). Both include integrated graphics — Radeon Graphics (Ryzen 9 7900X) and Radeon 610M (Ryzen 9 8940HX) — useful as a fallback for troubleshooting or display output without a dedicated GPU. Primary use case: Ryzen 9 7900X targets Gaming. Direct competitor: Ryzen 9 7900X rivals Core i9-13900K.
| Feature | Ryzen 9 7900X | Ryzen 9 8940HX |
|---|---|---|
| Integrated GPU | Yes | Yes |
| IGPU Model | Radeon Graphics | Radeon 610M |
| Unlocked | Yes | No |
| AVX-512 | Yes | Yes |
| Virtualization | AMD-V | true |
| Target Use | Gaming | — |
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