Ryzen 7 8840HX vs Ryzen 9 5900X
Ryzen 7 8840HX
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 Ryzen 7 8840HX
Performance Per Dollar Ryzen 9 5900X
Performance Comparison
About PassMark🏆 Chipversus Verdict
🚀 Performance Leadership
| Insight | Ryzen 7 8840HX | Ryzen 9 5900X |
|---|---|---|
| Gaming | ✅ Superior gaming performance | ❌ Lower gaming performance |
| Workstation | ✅ Better multi-core power | ❌ Weaker in multi-core tasks |
| Price | ✅ More affordable ($0) | ⚠️ Higher cost ($350) |
| Longevity | ✨ Modern (Dragon Range (2025) / 5 nm) | ✨ Modern (Vermeer (Zen3) (2020−2022) / 7 nm, 12 nm) |
💎 Value Proposition
| Insight | Ryzen 7 8840HX | 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 7 8840HX and Ryzen 9 5900X
Ryzen 7 8840HX
The Ryzen 7 8840HX 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 12 cores and 24 threads. Base frequency is 2.9 GHz, with boost up to 5.1 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: 42,275 points. Launch price was $499.
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
Both the Ryzen 7 8840HX and Ryzen 9 5900X share an identical 12-core/24-thread configuration. Boost clocks reach 5.1 GHz on the Ryzen 7 8840HX versus 4.8 GHz on the Ryzen 9 5900X — a 6.1% clock advantage for the Ryzen 7 8840HX (base: 2.9 GHz vs 3.7 GHz). The Ryzen 7 8840HX uses the Dragon Range (2025) architecture (5 nm), while the Ryzen 9 5900X uses Vermeer (Zen3) (2020−2022) (7 nm, 12 nm). In PassMark, the Ryzen 7 8840HX scores 42,275 against the Ryzen 9 5900X's 38,955 — a 8.2% lead for the Ryzen 7 8840HX. L3 cache: 64 MB (total) on the Ryzen 7 8840HX vs 64 MB on the Ryzen 9 5900X.
| Feature | Ryzen 7 8840HX | Ryzen 9 5900X |
|---|---|---|
| Cores / Threads | 12 / 24 | 12 / 24 |
| Boost Clock | 5.1 GHz+6% | 4.8 GHz |
| Base Clock | 2.9 GHz | 3.7 GHz+28% |
| L3 Cache | 64 MB (total) | 64 MB |
| L2 Cache | 1 MB (per core)+100% | 512K (per core) |
| Process | 5 nm-29% | 7 nm, 12 nm |
| Architecture | Dragon Range (2025) | Vermeer (Zen3) (2020−2022) |
| PassMark | 42,275+9% | 38,955 |
| Cinebench R23 Multi | — | 21,000 |
| Geekbench 6 Single | — | 2,174 |
| Geekbench 6 Multi | — | 11,888 |
Memory & Platform
The Ryzen 7 8840HX uses the FL1 socket (PCIe 5.0), while the Ryzen 9 5900X uses AM4 (PCIe 4.0) — making them incompatible on the same motherboard. Maximum memory speed reaches 5600 on the Ryzen 7 8840HX versus DDR4-3200 on the Ryzen 9 5900X — the Ryzen 7 8840HX supports 199.7% faster memory, which can translate to measurable gains in memory-sensitive workloads. The Ryzen 9 5900X supports up to 128 GB of RAM compared to 64 — 66.7% more capacity for professional workloads. Both feature 2-channel memory with ECC support. PCIe lanes: 28 (Ryzen 7 8840HX) vs 24 (Ryzen 9 5900X) — the Ryzen 7 8840HX offers 4 more lanes for additional GPUs or NVMe drives. Chipset compatibility: FP8,FP7 (Ryzen 7 8840HX) and A320,B350,X370,B450,X470,B550,X570 (Ryzen 9 5900X).
| Feature | Ryzen 7 8840HX | Ryzen 9 5900X |
|---|---|---|
| Socket | FL1 | AM4 |
| PCIe Generation | PCIe 5.0+25% | PCIe 4.0 |
| Max RAM Speed | 5600+139900% | DDR4-3200 |
| Max RAM Capacity | 64 | 128 GB+209715100% |
| RAM Channels | 2 | 2 |
| ECC Support | ✅ | ✅ |
| PCIe Lanes | 28+17% | 24 |
Advanced Features
Only the Ryzen 9 5900X has an unlocked multiplier for overclocking — a significant advantage for enthusiasts seeking extra performance. Only the Ryzen 7 8840HX supports AVX-512 instructions — important for machine learning and scientific applications. Virtualization support: VT-x, VT-d, AMD-V (Ryzen 7 8840HX) vs AMD-V (Ryzen 9 5900X). The Ryzen 7 8840HX includes integrated graphics (AMD Radeon 780M), while the Ryzen 9 5900X requires a dedicated GPU. Primary use case: Ryzen 9 5900X targets Workstation. Direct competitor: Ryzen 7 8840HX rivals Core i7-13700H; Ryzen 9 5900X rivals Core i9-12900K.
| Feature | Ryzen 7 8840HX | Ryzen 9 5900X |
|---|---|---|
| Integrated GPU | Yes | No |
| IGPU Model | AMD Radeon 780M | — |
| Unlocked | No | Yes |
| AVX-512 | Yes | No |
| Virtualization | VT-x, VT-d, AMD-V | AMD-V |
| Target Use | — | Workstation |
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