AMD Ryzen 9 9955HX vs Intel Core i7-1255U
74.2Single-core52.8
82Multi-core32.6
42.2Efficiencyspec-based75.3
32.6iGPU55.7
84.3Platformspec-based47.7
15 spec wins — AMD Ryzen 9 9955HX2 spec wins — Intel Core i7-1255U
InnoReviews verdict
AMD Ryzen 9 9955HX wins this laptop processor face-off, 69.5 to 48.6, pulling ahead mainly in multi-core (+49) and single-core (+21). Intel Core i7-1255U 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 53
- Stronger multi-core score: 82 vs 33
- 700% higher Performance cores: 16 vs 2
- 451% higher Cinebench R23 (multi): 37,500 vs 6,800
- 433% higher L3 cache: 64 MB vs 12 MB
Reasons to pick the Intel Core i7-1255U
- Stronger iGPU score: 56 vs 33
- 183% higher 3DMark Time Spy Graphics (iGPU): 1,496 vs 528
- 73% lower Base TDP: 15 W vs 55 W
General
| Spec | AMD Ryzen 9 9955HX | Intel Core i7-1255U |
|---|---|---|
| Announced | 2025 | 2022 |
| Process | 4 nm+60% | 10 nm |
| Base TDP | 55 W | 15 W+73% |
| Max TDP | 75 W+36% | 55 W |
Cores & Clocks
| Spec | AMD Ryzen 9 9955HX | Intel Core i7-1255U |
|---|---|---|
| Cores | 16+60% | 10 |
| Performance cores | 16+700% | 2 |
| Efficiency cores | — | 8 |
| Threads | 32+167% | 12 |
| Base clock | 2.5 GHz+47% | 1.7 GHz |
| Boost clock | 5.4 GHz+15% | 4.7 GHz |
| L3 cache | 64 MB+433% | 12 MB |
Integrated GPU
| Spec | AMD Ryzen 9 9955HX | Intel Core i7-1255U |
|---|---|---|
| iGPU | AMD Radeon 610M | Intel Iris Xe (96 EU) |
| iGPU clock | 2,200 MHz | 1,250 MHz |
Memory
| Spec | AMD Ryzen 9 9955HX | Intel Core i7-1255U |
|---|---|---|
| Memory support | DDR5-5600 | LPDDR5-5200 / DDR5-4800 / LPDDR4X-4267 |
| Max memory | 256 GB+300% | 64 GB |
Benchmarks
| Spec | AMD Ryzen 9 9955HX | Intel Core i7-1255U |
|---|---|---|
| Geekbench 6 (single) | 3,080+45%Top 14% | 2,130Bottom 21% |
| Geekbench 6 (multi) | 19,500+195%Top 10% | 6,600Bottom 16% |
| Cinebench R23 (single) | 2,150+34%Top 11% | 1,600Bottom 35% |
| Cinebench R23 (multi) | 37,500+451%Top 2% | 6,800Bottom 19% |
| PassMark | 56,261+335%Top 4% | 12,941Bottom 23% |
| 3DMark Time Spy Graphics (iGPU) | 528Bottom 18% | 1,496+183%Top 43% |
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