Intel Core Ultra 7 255H vs Intel Core Ultra 9 275HX
69.7Single-core74.5
56.8Multi-core80.6
75.7Efficiencyspec-based44.4
75.9iGPU60.5
60.5Platformspec-based73.9
2 spec wins — Intel Core Ultra 7 255H15 spec wins — Intel Core Ultra 9 275HX
InnoReviews verdict
Intel Core Ultra 9 275HX wins this laptop processor face-off, 70.6 to 65.3, pulling ahead mainly in multi-core (+24) and single-core (+5). 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: 81 vs 57
- 100% higher Max memory: 256 GB vs 128 GB
- 92% higher Cinebench R23 (multi): 35,766 vs 18,624
- 81% higher PassMark: 55,684 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 26% | 3,042+7%Top 14% |
| Geekbench 6 (multi) | 15,362Top 20% | 19,417+26%Top 10% |
| Cinebench R23 (single) | 2,055Top 15% | 2,194+7%Top 4% |
| Cinebench R23 (multi) | 18,624Top 22% | 35,766+92%Top 4% |
| PassMark | 30,782Top 24% | 55,684+81%Top 4% |
| PassMark (single thread) | 4,310Top 13% | 4,701+9%Top 5% |
| 3DMark Time Spy Graphics (iGPU) | 3,719+100%Top 11% | 1,855Top 44% |
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