Intel Core Ultra 7 255H vs Intel Core Ultra 9 275HX
69.7Single-core75.3
56.8Multi-core83.1
75.7Efficiencyspec-based44.4
75.9iGPU60.5
60.5Platformspec-based73.9
2 spec wins — Intel Core Ultra 7 255H14 spec wins — Intel Core Ultra 9 275HX
InnoReviews verdict
Intel Core Ultra 9 275HX wins this laptop processor face-off, 71.7 to 65.3, pulling ahead mainly in multi-core (+26) and single-core (+6). Intel Core Ultra 7 255H still makes sense if its price or standout specs fit your needs better.
Which would you pick?
Key differences
Reasons to pick the Intel Core Ultra 7 255H
- Stronger iGPU score: 76 vs 61
- 100% higher 3DMark Time Spy Graphics (iGPU): 3,719 vs 1,855
- 49% lower Base TDP: 28 W vs 55 W
Reasons to pick the Intel Core Ultra 9 275HX
- Stronger single-core score: 75 vs 70
- Stronger multi-core score: 83 vs 57
- 100% higher Max memory: 256 GB vs 128 GB
- 88% higher Cinebench R23 (multi): 35,000 vs 18,624
- 81% higher PassMark: 55,712 vs 30,782
General
| Spec | Intel Core Ultra 7 255H | Intel Core Ultra 9 275HX |
|---|---|---|
| Announced | 2025 | 2025 |
| Process | 3 nm | 3 nm |
| Base TDP | 28 W+49% | 55 W |
| Max TDP | 115 W | 160 W+39% |
Cores & Clocks
| Spec | Intel Core Ultra 7 255H | Intel Core Ultra 9 275HX |
|---|---|---|
| Cores | 16 | 24+50% |
| Performance cores | 6 | 8+33% |
| Efficiency cores | 10 | 16+60% |
| Threads | 16 | 24+50% |
| Base clock | 2 GHz | 2.7 GHz+35% |
| Boost clock | 5.1 GHz | 5.4 GHz+6% |
| L3 cache | 24 MB | 36 MB+50% |
Integrated GPU
| Spec | Intel Core Ultra 7 255H | Intel Core Ultra 9 275HX |
|---|---|---|
| iGPU | Intel Arc 140T | Intel Arc Graphics (4 Xe) |
| iGPU clock | 2,250 MHz | 2,000 MHz |
Memory
| Spec | Intel Core Ultra 7 255H | Intel Core Ultra 9 275HX |
|---|---|---|
| Memory support | LPDDR5X-8400 / DDR5-6400 | DDR5-6400 |
| Max memory | 128 GB | 256 GB+100% |
Benchmarks
| Spec | Intel Core Ultra 7 255H | Intel Core Ultra 9 275HX |
|---|---|---|
| Geekbench 6 (single) | 2,851Top 29% | 3,100+9%Top 14% |
| Geekbench 6 (multi) | 15,362Top 23% | 21,800+42%Top 7% |
| Cinebench R23 (single) | 2,055Top 18% | 2,200+7%Top 8% |
| Cinebench R23 (multi) | 18,624Top 20% | 35,000+88%Top 6% |
| PassMark | 30,782Top 21% | 55,712+81%Top 6% |
| 3DMark Time Spy Graphics (iGPU) | 3,719+100%Top 7% | 1,855Top 36% |
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