Ryzen 9 9900X3D vs Ryzen 9 9955HX
Ryzen 9 9900X3D
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.
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Performance Per Dollar Ryzen 9 9900X3D
Performance Per Dollar
Performance Comparison
About PassMark🏆 Chipversus Verdict
🚀 Performance Leadership
| Insight | Ryzen 9 9900X3D | Ryzen 9 9955HX |
|---|---|---|
| Gaming | ✅ Superior gaming performance | ❌ Lower gaming performance |
| Workstation | ✅ Better multi-core power | ❌ Weaker in multi-core tasks |
| Price | ⚠️ Higher cost ($589) | ✅ More affordable ($0) |
| Longevity | ✨ Modern (Granite Ridge (2024−2025) / 4 nm) | ✨ Modern (Fire Range-HX (Zen 5) (2025) / 4 nm) |
💎 Value Proposition
| Insight | Ryzen 9 9900X3D | Ryzen 9 9955HX |
|---|---|---|
| Cost Efficiency | ❌ Lower cost efficiency | ❌ Lower cost efficiency |
| Upfront Cost | ⚠️ Higher cost ($589) | ✅ 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.
League of Legends
Valorant
Technical Specifications
Side-by-side comparison of Ryzen 9 9900X3D and Ryzen 9 9955HX
Ryzen 9 9900X3D
The Ryzen 9 9900X3D is manufactured by AMD. It was released in 6 January 2025 (less than a year ago). It is based on the Granite Ridge (2024−2025) architecture. It features 12 cores and 24 threads. Base frequency is 4.4 GHz, with boost up to 5.5 GHz. L3 cache: 128 MB (total). L2 cache: 1 MB (per core). Built on 4 nm process technology. Socket: AM5. Thermal design power (TDP): 120 Watt. Memory support: DDR5. Passmark benchmark score: 56,301 points. Launch price was $599.
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
The Ryzen 9 9900X3D packs 12 cores / 24 threads, while the Ryzen 9 9955HX offers 16 cores / 32 threads — the Ryzen 9 9955HX has 4 more cores. Boost clocks reach 5.5 GHz on the Ryzen 9 9900X3D versus 5.4 GHz on the Ryzen 9 9955HX — a 1.8% clock advantage for the Ryzen 9 9900X3D (base: 4.4 GHz vs 2.5 GHz). The Ryzen 9 9900X3D uses the Granite Ridge (2024−2025) architecture (4 nm), while the Ryzen 9 9955HX uses Fire Range-HX (Zen 5) (2025) (4 nm). In PassMark, the Ryzen 9 9900X3D scores 56,301 against the Ryzen 9 9955HX's 55,711 — a 1.1% lead for the Ryzen 9 9900X3D. Geekbench 6 single-core — the metric most relevant to gaming — records 3,400 vs 3,219, a 5.5% lead for the Ryzen 9 9900X3D that directly translates to higher frame rates. Multi-core Geekbench: 26,000 vs 19,563 (28.3% advantage for the Ryzen 9 9900X3D). L3 cache: 128 MB (total) on the Ryzen 9 9900X3D vs 64 MB (total) on the Ryzen 9 9955HX.
| Feature | Ryzen 9 9900X3D | Ryzen 9 9955HX |
|---|---|---|
| Cores / Threads | 12 / 24 | 16 / 32+33% |
| Boost Clock | 5.5 GHz+2% | 5.4 GHz |
| Base Clock | 4.4 GHz+76% | 2.5 GHz |
| L3 Cache | 128 MB (total)+100% | 64 MB (total) |
| L2 Cache | 1 MB (per core) | 1 MB (per core) |
| Process | 4 nm | 4 nm |
| Architecture | Granite Ridge (2024−2025) | Fire Range-HX (Zen 5) (2025) |
| PassMark | 56,301+1% | 55,711 |
| Cinebench R23 Multi | — | 38,010 |
| Geekbench 6 Single | 3,400+6% | 3,219 |
| Geekbench 6 Multi | 26,000+33% | 19,563 |
Memory & Platform
The Ryzen 9 9900X3D uses the AM5 socket (PCIe 5.0), while the Ryzen 9 9955HX uses FL1 (PCIe 5.0) — making them incompatible on the same motherboard. Both support up to DDR5-5600 memory speed. The Ryzen 9 9900X3D supports up to 192 GB of RAM compared to 96 GB — 66.7% more capacity for professional workloads. Both feature 2-channel memory with ECC support. PCIe lanes: 24 (Ryzen 9 9900X3D) vs 28 (Ryzen 9 9955HX) — the Ryzen 9 9955HX offers 4 more lanes for additional GPUs or NVMe drives. Chipset compatibility: X670,X670E,X870,X870E (Ryzen 9 9900X3D) and AMD FL1 (Ryzen 9 9955HX).
| Feature | Ryzen 9 9900X3D | Ryzen 9 9955HX |
|---|---|---|
| Socket | AM5 | FL1 |
| PCIe Generation | PCIe 5.0 | PCIe 5.0 |
| Max RAM Speed | DDR5-5600 | DDR5-5600 |
| Max RAM Capacity | 192 GB+100% | 96 GB |
| RAM Channels | 2 | 2 |
| ECC Support | ✅ | ✅ |
| PCIe Lanes | 24 | 28+17% |
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 9900X3D) vs true (Ryzen 9 9955HX). Both include integrated graphics — AMD Radeon Graphics (2 Cores) (Ryzen 9 9900X3D) and Radeon 610M (Ryzen 9 9955HX) — useful as a fallback for troubleshooting or display output without a dedicated GPU. Primary use case: Ryzen 9 9900X3D targets High End Gaming/Creation. Direct competitor: Ryzen 9 9900X3D rivals Core Ultra 9 285K; Ryzen 9 9955HX rivals Core Ultra 9 275HX.
| Feature | Ryzen 9 9900X3D | Ryzen 9 9955HX |
|---|---|---|
| Integrated GPU | Yes | Yes |
| IGPU Model | AMD Radeon Graphics (2 Cores) | Radeon 610M |
| Unlocked | Yes | Yes |
| AVX-512 | Yes | Yes |
| Virtualization | AMD-V | true |
| Target Use | High End Gaming/Creation | — |
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