CPU
GPU
Ryzen 9 7900X3D
Core Ultra 7 255HX
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 Core Ultra 7 255HX
Performance Comparison
About PassMark🏆 Chipversus Verdict
🚀 Performance Leadership
| Insight | Ryzen 9 7900X3D | Core Ultra 7 255HX |
|---|---|---|
| Gaming | ✅ Superior gaming performance | ❌ Lower gaming performance |
| Workstation | ✅ Better multi-core power | ❌ Weaker in multi-core tasks |
| Price | ⚠️ Higher cost ($389) | ✅ More affordable ($0) |
| Longevity | ✨ Modern (Raphael (2023−2025) / 5 nm, 6 nm) | ✨ Modern (Arrow Lake-HX (2025) / 3 nm) |
💎 Value Proposition
| Insight | Ryzen 9 7900X3D | Core Ultra 7 255HX |
|---|---|---|
| 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.
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Technical Specifications
Side-by-side comparison of Ryzen 9 7900X3D and Core Ultra 7 255HX
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.
Core Ultra 7 255HX
The Core Ultra 7 255HX is manufactured by Intel. It was released in 2025-01-01. It is based on the Arrow Lake-HX (2025) architecture. It features 20 cores and 20 threads. Base frequency is 2.4 GHz, with boost up to 5.2 GHz. L3 cache: 30 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: 49,765 points. Launch price was $450.
Processing Power
The Ryzen 9 7900X3D packs 12 cores / 24 threads, while the Core Ultra 7 255HX offers 20 cores / 20 threads — the Core Ultra 7 255HX has 8 more cores. Boost clocks reach 5.6 GHz on the Ryzen 9 7900X3D versus 5.2 GHz on the Core Ultra 7 255HX — a 7.4% 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 Core Ultra 7 255HX uses Arrow Lake-HX (2025) (3 nm). In PassMark, the Ryzen 9 7900X3D scores 50,213 against the Core Ultra 7 255HX's 49,765 — a 0.9% lead for the Ryzen 9 7900X3D. L3 cache: 128 MB (total) on the Ryzen 9 7900X3D vs 30 MB (total) on the Core Ultra 7 255HX.
| Feature | Ryzen 9 7900X3D | Core Ultra 7 255HX |
|---|---|---|
| Cores / Threads | 12 / 24 | 20 / 20+67% |
| Boost Clock | 5.6 GHz+8% | 5.2 GHz |
| Base Clock | 4.4 GHz+83% | 2.4 GHz |
| L3 Cache | 128 MB (total)+327% | 30 MB (total) |
| L2 Cache | 1 MB (per core) | 3 MB (per core)+200% |
| Process | 5 nm, 6 nm | 3 nm-40% |
| Architecture | Raphael (2023−2025) | Arrow Lake-HX (2025) |
| PassMark | 50,213 | 49,765 |
| Geekbench 6 Single | — | 2,923 |
| Geekbench 6 Multi | — | 16,885 |
Memory & Platform
The Ryzen 9 7900X3D uses the AM5 socket (PCIe 5.0), while the Core Ultra 7 255HX uses FCBGA2114 (PCIe 5.0) — making them incompatible on the same motherboard. Maximum memory speed reaches 5200 on the Ryzen 9 7900X3D versus DDR5-6400 on the Core Ultra 7 255HX — the Ryzen 9 7900X3D supports 199.6% faster memory, which can translate to measurable gains in memory-sensitive workloads. The Core Ultra 7 255HX supports up to 192 GB of RAM compared to 128 — 40% more capacity for professional workloads. Both feature 2-channel memory with ECC support. PCIe lanes: 28 (Ryzen 9 7900X3D) vs 24 (Core Ultra 7 255HX) — the Ryzen 9 7900X3D offers 4 more lanes for additional GPUs or NVMe drives. Chipset compatibility: AM5 (Ryzen 9 7900X3D) and Intel HM870,Intel WM880 (Core Ultra 7 255HX).
| Feature | Ryzen 9 7900X3D | Core Ultra 7 255HX |
|---|---|---|
| Socket | AM5 | FCBGA2114 |
| PCIe Generation | PCIe 5.0 | PCIe 5.0 |
| Max RAM Speed | 5200+103900% | DDR5-6400 |
| Max RAM Capacity | 128 | 192 GB+157286300% |
| 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 7900X3D supports AVX-512 instructions — important for machine learning and scientific applications. Virtualization support: VT-x, VT-d, AMD-V (Ryzen 9 7900X3D) vs true (Core Ultra 7 255HX). Both include integrated graphics — AMD Radeon Graphics (Ryzen 9 7900X3D) and Intel Arc Xe-LPG (Core Ultra 7 255HX) — useful as a fallback for troubleshooting or display output without a dedicated GPU. Direct competitor: Ryzen 9 7900X3D rivals Core i7-14700K; Core Ultra 7 255HX rivals Ryzen 9 9850HX.
| Feature | Ryzen 9 7900X3D | Core Ultra 7 255HX |
|---|---|---|
| Integrated GPU | Yes | Yes |
| IGPU Model | AMD Radeon Graphics | Intel Arc Xe-LPG |
| Unlocked | Yes | Yes |
| AVX-512 | Yes | No |
| Virtualization | VT-x, VT-d, AMD-V | true |
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