Ryzen 9 7945HX vs Ryzen 9 9955HX
Ryzen 9 7945HX
Ryzen 9 9955HX
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 7945HX
Performance Per Dollar
Performance Comparison
About PassMark🏆 Chipversus Verdict
🚀 Performance Leadership
| Insight | Ryzen 9 7945HX | Ryzen 9 9955HX |
|---|---|---|
| Gaming | ❌ Lower gaming performance | ✅ Superior gaming performance |
| Workstation | ❌ Weaker in multi-core tasks | ✅ Better multi-core power |
| Price | Equivalent pricing | Equivalent pricing |
| Longevity | ✨ Modern (Dragon Range-HX (Zen 4) (2023−2024) / CCD = 5 nm, I/O = 6 nm) | ✨ Modern (Fire Range-HX (Zen 5) (2025) / 4 nm) |
💎 Value Proposition
| Insight | Ryzen 9 7945HX | Ryzen 9 9955HX |
|---|---|---|
| Cost Efficiency | ❌ Lower cost efficiency | ❌ Lower cost efficiency |
| Upfront Cost | Equivalent pricing | Equivalent pricing |
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 7945HX and Ryzen 9 9955HX
Ryzen 9 7945HX
The Ryzen 9 7945HX is manufactured by AMD. It was released in 2023-03-12. It is based on the Dragon Range-HX (Zen 4) (2023−2024) architecture. It features 16 cores and 32 threads. Base frequency is 2.5 GHz, with boost up to 5.4 GHz. L3 cache: 64 MB (total). L2 cache: 1 MB (per core). Built on CCD = 5 nm, I/O = 6 nm process technology. Socket: FL1. Thermal design power (TDP): 55 Watt. Memory support: DDR5. Passmark benchmark score: 54,425 points. Launch price was $700.
Ryzen 9 9955HX
The Ryzen 9 9955HX is manufactured by AMD. It was released in 2025-01-01. It is based on the Fire Range-HX (Zen 5) (2025) architecture. It features 16 cores and 32 threads. Base frequency is 2.5 GHz, with boost up to 5.4 GHz. L3 cache: 64 MB (total). L2 cache: 1 MB (per core). Built on 4 nm process technology. Socket: FL1. Thermal design power (TDP): 55 Watt. Memory support: DDR5. Passmark benchmark score: 55,711 points. Launch price was $650.
Processing Power
Both the Ryzen 9 7945HX and Ryzen 9 9955HX share an identical 16-core/32-thread configuration. Boost clocks reach 5.4 GHz on the Ryzen 9 7945HX versus 5.4 GHz on the Ryzen 9 9955HX — identical boost frequencies (base: 2.5 GHz vs 2.5 GHz). The Ryzen 9 7945HX uses the Dragon Range-HX (Zen 4) (2023−2024) architecture (CCD = 5 nm, I/O = 6 nm), while the Ryzen 9 9955HX uses Fire Range-HX (Zen 5) (2025) (4 nm). In PassMark, the Ryzen 9 7945HX scores 54,425 against the Ryzen 9 9955HX's 55,711 — a 2.3% lead for the Ryzen 9 9955HX. Cinebench R23 multi-core: 34,521 vs 38,010 (9.6% advantage for the Ryzen 9 9955HX). Geekbench 6 single-core — the metric most relevant to gaming — records 2,774 vs 3,219, a 14.9% lead for the Ryzen 9 9955HX that directly translates to higher frame rates. Multi-core Geekbench: 16,214 vs 19,563 (18.7% advantage for the Ryzen 9 9955HX). Both processors carry 64 MB (total) of L3 cache.
| Feature | Ryzen 9 7945HX | Ryzen 9 9955HX |
|---|---|---|
| Cores / Threads | 16 / 32 | 16 / 32 |
| Boost Clock | 5.4 GHz | 5.4 GHz |
| Base Clock | 2.5 GHz | 2.5 GHz |
| L3 Cache | 64 MB (total) | 64 MB (total) |
| L2 Cache | 1 MB (per core) | 1 MB (per core) |
| Process | CCD = 5 nm, I/O = 6 nm | 4 nm-20% |
| Architecture | Dragon Range-HX (Zen 4) (2023−2024) | Fire Range-HX (Zen 5) (2025) |
| PassMark | 54,425 | 55,711+2% |
| Cinebench R23 Multi | 34,521 | 38,010+10% |
| Geekbench 6 Single | 2,774 | 3,219+16% |
| Geekbench 6 Multi | 16,214 | 19,563+21% |
Memory & Platform
Both processors use the FL1 socket with PCIe 5.0. Both support up to DDR5-5200 memory speed. The Ryzen 9 9955HX supports up to 96 GB of RAM compared to 64 GB — 40% more capacity for professional workloads. Both feature 2-channel memory with ECC support. Both provide 28 PCIe lanes. Chipset compatibility: FL1 (Ryzen 9 7945HX) and AMD FL1 (Ryzen 9 9955HX).
| Feature | Ryzen 9 7945HX | Ryzen 9 9955HX |
|---|---|---|
| Socket | FL1 | FL1 |
| PCIe Generation | PCIe 5.0 | PCIe 5.0 |
| Max RAM Speed | DDR5-5200 | DDR5-5600 |
| Max RAM Capacity | 64 GB | 96 GB+50% |
| RAM Channels | 2 | 2 |
| ECC Support | ✅ | ✅ |
| PCIe Lanes | 28 | 28 |
Advanced Features
Both processors feature an unlocked multiplier for overclocking. Both support AVX-512 instructions, benefiting scientific computing, AI inference, and encryption workloads. Virtualization support: AMD-V (Ryzen 9 7945HX) vs true (Ryzen 9 9955HX). Both include integrated graphics — Radeon 610M (Ryzen 9 7945HX) and Radeon 610M (Ryzen 9 9955HX) — useful as a fallback for troubleshooting or display output without a dedicated GPU. Primary use case: Ryzen 9 7945HX targets Extreme Gaming / Mobile Workstation. Direct competitor: Ryzen 9 7945HX rivals Core i9-14900HX; Ryzen 9 9955HX rivals Core Ultra 9 275HX.
| Feature | Ryzen 9 7945HX | Ryzen 9 9955HX |
|---|---|---|
| Integrated GPU | Yes | Yes |
| IGPU Model | Radeon 610M | Radeon 610M |
| Unlocked | Yes | Yes |
| AVX-512 | Yes | Yes |
| Virtualization | AMD-V | true |
| Target Use | Extreme Gaming / Mobile Workstation | — |
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