CPU
GPU
Ryzen 9 7900X3D
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 7900X3D
Performance Per Dollar Ryzen 9 8940HX
Performance Comparison
About PassMark🏆 Chipversus Verdict
🚀 Performance Leadership
| Insight | Ryzen 9 7900X3D | Ryzen 9 8940HX |
|---|---|---|
| Gaming | ✅ Superior gaming performance | ❌ Lower gaming performance |
| Workstation | ❌ Weaker in multi-core tasks | ✅ Better multi-core power |
| Price | ⚠️ Higher cost ($389) | ✅ More affordable ($0) |
| Longevity | ✨ Modern (Raphael (2023−2025) / 5 nm, 6 nm) | ✨ Modern (Dragon Range (2025) / 5 nm) |
💎 Value Proposition
| Insight | Ryzen 9 7900X3D | Ryzen 9 8940HX |
|---|---|---|
| Cost Efficiency | ❌ Lower cost efficiency | ❌ Lower cost efficiency |
| Upfront Cost | ⚠️ Higher cost ($389) | ✅ 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 7900X3D and Ryzen 9 8940HX
Ryzen 9 7900X3D
The Ryzen 9 7900X3D is manufactured by AMD. It was released in 4 January 2023 (2 years ago). It is based on the Raphael (2023−2025) architecture. It features 12 cores and 24 threads. Base frequency is 4.4 GHz, with boost up to 5.6 GHz. L3 cache: 128 MB (total). L2 cache: 1 MB (per core). Built on 5 nm, 6 nm process technology. Socket: AM5. Thermal design power (TDP): 120 Watt. Memory support: DDR5-5200. Passmark benchmark score: 50,213 points. Launch price was $599.
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 7900X3D 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 7900X3D versus 5.3 GHz on the Ryzen 9 8940HX — a 5.5% clock advantage for the Ryzen 9 7900X3D (base: 4.4 GHz vs 2.4 GHz). The Ryzen 9 7900X3D uses the Raphael (2023−2025) architecture (5 nm, 6 nm), while the Ryzen 9 8940HX uses Dragon Range (2025) (5 nm). In PassMark, the Ryzen 9 7900X3D scores 50,213 against the Ryzen 9 8940HX's 51,161 — a 1.9% lead for the Ryzen 9 8940HX. L3 cache: 128 MB (total) on the Ryzen 9 7900X3D vs 64 MB (total) on the Ryzen 9 8940HX.
| Feature | Ryzen 9 7900X3D | Ryzen 9 8940HX |
|---|---|---|
| Cores / Threads | 12 / 24 | 16 / 32+33% |
| Boost Clock | 5.6 GHz+6% | 5.3 GHz |
| Base Clock | 4.4 GHz+83% | 2.4 GHz |
| L3 Cache | 128 MB (total)+100% | 64 MB (total) |
| L2 Cache | 1 MB (per core) | 1 MB (per core) |
| Process | 5 nm, 6 nm | 5 nm |
| Architecture | Raphael (2023−2025) | Dragon Range (2025) |
| PassMark | 50,213 | 51,161+2% |
| Geekbench 6 Single | — | 2,800 |
| Geekbench 6 Multi | — | 16,000 |
Memory & Platform
The Ryzen 9 7900X3D uses the AM5 socket (PCIe 5.0), while the Ryzen 9 8940HX uses FL1 (PCIe 5.0) — making them incompatible on the same motherboard. Maximum memory speed reaches 5200 on the Ryzen 9 7900X3D versus DDR5-5200 on the Ryzen 9 8940HX — the Ryzen 9 7900X3D supports 199.6% faster memory, which can translate to measurable gains in memory-sensitive workloads. The Ryzen 9 7900X3D supports up to 128 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 7900X3D) and AMD FL1 (Ryzen 9 8940HX).
| Feature | Ryzen 9 7900X3D | Ryzen 9 8940HX |
|---|---|---|
| Socket | AM5 | FL1 |
| PCIe Generation | PCIe 5.0 | PCIe 5.0 |
| Max RAM Speed | 5200+103900% | DDR5-5200 |
| Max RAM Capacity | 128 | 64 GB+52428700% |
| RAM Channels | 2 | 2 |
| ECC Support | ✅ | ❌ |
| PCIe Lanes | 28 | 28 |
Advanced Features
Only the Ryzen 9 7900X3D 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, AMD-V (Ryzen 9 7900X3D) vs true (Ryzen 9 8940HX). Both include integrated graphics — AMD Radeon Graphics (Ryzen 9 7900X3D) and Radeon 610M (Ryzen 9 8940HX) — useful as a fallback for troubleshooting or display output without a dedicated GPU. Direct competitor: Ryzen 9 7900X3D rivals Core i7-14700K.
| Feature | Ryzen 9 7900X3D | Ryzen 9 8940HX |
|---|---|---|
| Integrated GPU | Yes | Yes |
| IGPU Model | AMD Radeon Graphics | Radeon 610M |
| Unlocked | Yes | No |
| AVX-512 | Yes | Yes |
| Virtualization | VT-x, VT-d, AMD-V | true |
Top Performing CPUs
The most powerful cpus ranked by PassMark CPU Mark benchmark scores.
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