AMD Ryzen 9 9955HX vs Intel Core Ultra 7 251HX
74.2Single-core66.6
82Multi-core65.1
42.2Efficiencyspec-based44.4
32.6iGPU—
84.3Platformspec-based68.1
9 spec wins — AMD Ryzen 9 9955HX5 spec wins — Intel Core Ultra 7 251HX
InnoReviews verdict
AMD Ryzen 9 9955HX wins this laptop processor face-off, 69.5 to 62.6, pulling ahead mainly in multi-core (+17) and single-core (+8). Intel Core Ultra 7 251HX still makes sense if its price or standout specs fit your needs better.
Which would you pick?
Key differences
Reasons to pick the AMD Ryzen 9 9955HX
- Stronger single-core score: 74 vs 67
- Stronger multi-core score: 82 vs 65
- 167% higher Performance cores: 16 vs 6
- 113% higher L3 cache: 64 MB vs 30 MB
- 78% higher threads: 32 vs 18
Reasons to pick the Intel Core Ultra 7 251HX
- 113% higher Max TDP: 160 W vs 75 W
- 25% lower process: 3 nm vs 4 nm
- 16% higher Base clock: 2.9 GHz vs 2.5 GHz
- 13% higher cores: 18 vs 16
General
| Spec | AMD Ryzen 9 9955HX | Intel Core Ultra 7 251HX |
|---|---|---|
| Announced | 2025 | 2026 |
| Process | 4 nm | 3 nm+25% |
| Base TDP | 55 W | 55 W |
| Max TDP | 75 W | 160 W+113% |
Cores & Clocks
| Spec | AMD Ryzen 9 9955HX | Intel Core Ultra 7 251HX |
|---|---|---|
| Cores | 16 | 18+13% |
| Performance cores | 16+167% | 6 |
| Efficiency cores | — | 12 |
| Threads | 32+78% | 18 |
| Base clock | 2.5 GHz | 2.9 GHz+16% |
| Boost clock | 5.4 GHz+6% | 5.1 GHz |
| L3 cache | 64 MB+113% | 30 MB |
Integrated GPU
| Spec | AMD Ryzen 9 9955HX | Intel Core Ultra 7 251HX |
|---|---|---|
| iGPU | AMD Radeon 610M | Intel Graphics (3 Xe) |
| iGPU clock | 2,200 MHz | 1,800 MHz |
Memory
| Spec | AMD Ryzen 9 9955HX | Intel Core Ultra 7 251HX |
|---|---|---|
| Memory support | DDR5-5600 | DDR5-6400 |
| Max memory | 256 GB | 256 GB |
Benchmarks
| Spec | AMD Ryzen 9 9955HX | Intel Core Ultra 7 251HX |
|---|---|---|
| Geekbench 6 (single) | 3,080+12%Top 17% | 2,762Top 33% |
| Geekbench 6 (multi) | 19,500+37%Top 13% | 14,233Top 30% |
| Cinebench R23 (single) | 2,150+11%Top 12% | 1,941Top 26% |
| Cinebench R23 (multi) | 37,500+44%Top 3% | 26,001Top 12% |
| PassMark | 56,261+20%Top 5% | 47,051Top 8% |
| 3DMark Time Spy Graphics (iGPU) | 528Bottom 20% | — |
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