Intel Core i7-1255U vs Intel Core Ultra 9 275HX
35.6Single-core72.8
20Multi-core81.4
75.3Efficiency44.4
34iGPU64
47.7Platform73.9
1 spec wins — Intel Core i7-1255U17 spec wins — Intel Core Ultra 9 275HX
InnoReviews verdict
Intel Core Ultra 9 275HX wins this laptop processor face-off, 70.9 to 37.8, pulling ahead mainly in Multi-core (+61) and Single-core (+37). 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 Intel Core i7-1255U
- Stronger efficiency score: 75 vs 44
- 73% lower Base TDP: 15 W vs 55 W
Reasons to pick the Intel Core Ultra 9 275HX
- Stronger Single-core score: 73 vs 36
- Stronger Multi-core score: 81 vs 20
- Stronger iGPU score: 64 vs 34
- Stronger platform score: 74 vs 48
- 415% higher Cinebench R23 (multi): 35,000 vs 6,800
General
| Spec | Intel Core i7-1255U | Intel Core Ultra 9 275HX |
|---|---|---|
| Announced | 2022 | 2025 |
| Process | 10 nm | 3 nm+70% |
| Base TDP | 15 W+73% | 55 W |
| Max TDP | 55 W | 160 W+191% |
Cores & Clocks
| Spec | Intel Core i7-1255U | Intel Core Ultra 9 275HX |
|---|---|---|
| Cores | 10 | 24+140% |
| Performance cores | 2 | 8+300% |
| Efficiency cores | 8 | 16+100% |
| Threads | 12 | 24+100% |
| Base clock | 1.7 GHz | 2.7 GHz+59% |
| Boost clock | 4.7 GHz | 5.4 GHz+15% |
| L3 cache | 12 MB | 36 MB+200% |
Integrated GPU
| Spec | Intel Core i7-1255U | Intel Core Ultra 9 275HX |
|---|---|---|
| iGPU | Intel Iris Xe (96 EU) | Intel Arc Graphics (4 Xe) |
| iGPU clock | 1,250 MHz | 2,000 MHz+60% |
Memory
| Spec | Intel Core i7-1255U | Intel Core Ultra 9 275HX |
|---|---|---|
| Memory support | LPDDR5-5200 / DDR5-4800 / LPDDR4X-4267 | DDR5-6400 |
| Max memory | 64 GB | 256 GB+300% |
Benchmarks
| Spec | Intel Core i7-1255U | Intel Core Ultra 9 275HX |
|---|---|---|
| Geekbench 6 (single) | 2,130 | 3,100+46% |
| Geekbench 6 (multi) | 6,600 | 21,800+230% |
| Cinebench R23 (single) | 1,600 | 2,200+38% |
| Cinebench R23 (multi) | 6,800 | 35,000+415% |
| PassMark | 13,000 | 56,500+335% |
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