CPU
GPU
Ryzen 9 9955HX
Core Ultra 9 275HX
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
Performance Per Dollar Core Ultra 9 275HX
Performance Comparison
About PassMark🏆 Chipversus Verdict
🚀 Performance Leadership
| Insight | Ryzen 9 9955HX | Core Ultra 9 275HX |
|---|---|---|
| Gaming | ✅ Superior gaming performance | ❌ Lower gaming performance |
| Workstation | ❌ Weaker in multi-core tasks | ✅ Better multi-core power |
| Price | Equivalent pricing | Equivalent pricing |
| Longevity | ✨ Modern (Fire Range-HX (Zen 5) (2025) / 4 nm) | ✨ Modern (Arrow Lake-HX (2025) / 3 nm) |
💎 Value Proposition
| Insight | Ryzen 9 9955HX | Core Ultra 9 275HX |
|---|---|---|
| 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 9955HX and Core Ultra 9 275HX
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.
Core Ultra 9 275HX
The Core Ultra 9 275HX is manufactured by Intel. It was released in 2025-01-01. It is based on the Arrow Lake-HX (2025) architecture. It features 24 cores and 24 threads. Base frequency is 2.7 GHz, with boost up to 5.4 GHz. L3 cache: 36 MB (total). L2 cache: 3 MB (per core). Built on 3 nm process technology. Socket: FCBGA2114. Thermal design power (TDP): 55 Watt. Memory support: DDR5-6400. Passmark benchmark score: 56,018 points. Launch price was $600.
Processing Power
The Ryzen 9 9955HX packs 16 cores / 32 threads, while the Core Ultra 9 275HX offers 24 cores / 24 threads — the Core Ultra 9 275HX has 8 more cores. Boost clocks reach 5.4 GHz on the Ryzen 9 9955HX versus 5.4 GHz on the Core Ultra 9 275HX — identical boost frequencies (base: 2.5 GHz vs 2.7 GHz). The Ryzen 9 9955HX uses the Fire Range-HX (Zen 5) (2025) architecture (4 nm), while the Core Ultra 9 275HX uses Arrow Lake-HX (2025) (3 nm). In PassMark, the Ryzen 9 9955HX scores 55,711 against the Core Ultra 9 275HX's 56,018 — a 0.5% lead for the Core Ultra 9 275HX. Geekbench 6 single-core — the metric most relevant to gaming — records 3,219 vs 2,835, a 12.7% lead for the Ryzen 9 9955HX that directly translates to higher frame rates. Multi-core Geekbench: 19,563 vs 17,908 (8.8% advantage for the Ryzen 9 9955HX). L3 cache: 64 MB (total) on the Ryzen 9 9955HX vs 36 MB (total) on the Core Ultra 9 275HX.
| Feature | Ryzen 9 9955HX | Core Ultra 9 275HX |
|---|---|---|
| Cores / Threads | 16 / 32 | 24 / 24+50% |
| Boost Clock | 5.4 GHz | 5.4 GHz |
| Base Clock | 2.5 GHz | 2.7 GHz+8% |
| L3 Cache | 64 MB (total)+78% | 36 MB (total) |
| L2 Cache | 1 MB (per core) | 3 MB (per core)+200% |
| Process | 4 nm | 3 nm-25% |
| Architecture | Fire Range-HX (Zen 5) (2025) | Arrow Lake-HX (2025) |
| PassMark | 55,711 | 56,018 |
| Cinebench R23 Multi | 38,010 | — |
| Geekbench 6 Single | 3,219+14% | 2,835 |
| Geekbench 6 Multi | 19,563+9% | 17,908 |
Memory & Platform
The Ryzen 9 9955HX uses the FL1 socket (PCIe 5.0), while the Core Ultra 9 275HX uses FCBGA2114 (PCIe 5.0) — making them incompatible on the same motherboard. Both support up to DDR5-5600 memory speed. The Core Ultra 9 275HX supports up to 256 GB of RAM compared to 96 GB — 90.9% more capacity for professional workloads. Both feature 2-channel memory with ECC support. PCIe lanes: 28 (Ryzen 9 9955HX) vs 24 (Core Ultra 9 275HX) — the Ryzen 9 9955HX offers 4 more lanes for additional GPUs or NVMe drives. Chipset compatibility: AMD FL1 (Ryzen 9 9955HX) and HM870,WM880 (Core Ultra 9 275HX).
| Feature | Ryzen 9 9955HX | Core Ultra 9 275HX |
|---|---|---|
| Socket | FL1 | FCBGA2114 |
| PCIe Generation | PCIe 5.0 | PCIe 5.0 |
| Max RAM Speed | DDR5-5600 | DDR5-6400 |
| Max RAM Capacity | 96 GB | 256 GB+167% |
| RAM Channels | 2 | 2 |
| ECC Support | ✅ | ❌ |
| PCIe Lanes | 28+17% | 24 |
Advanced Features
Both processors feature an unlocked multiplier for overclocking. Only the Ryzen 9 9955HX supports AVX-512 instructions — important for machine learning and scientific applications. Virtualization support: true (Ryzen 9 9955HX) vs VT-x, VT-d (Core Ultra 9 275HX). Both include integrated graphics — Radeon 610M (Ryzen 9 9955HX) and Intel Arc Graphics (Core Ultra 9 275HX) — useful as a fallback for troubleshooting or display output without a dedicated GPU. Primary use case: Core Ultra 9 275HX targets High-End Gaming Laptop. Direct competitor: Ryzen 9 9955HX rivals Core Ultra 9 275HX; Core Ultra 9 275HX rivals Ryzen 9 9955HX.
| Feature | Ryzen 9 9955HX | Core Ultra 9 275HX |
|---|---|---|
| Integrated GPU | Yes | Yes |
| IGPU Model | Radeon 610M | Intel Arc Graphics |
| Unlocked | Yes | Yes |
| AVX-512 | Yes | No |
| Virtualization | true | VT-x, VT-d |
| Target Use | — | High-End Gaming Laptop |
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