Intel Core Ultra 7 155H vs Intel Core Ultra 9 275HX
42.4Single-core72.8
37.3Multi-core81.4
66.9Efficiency44.4
74iGPU64
63.1Platform73.9
2 spec wins — Intel Core Ultra 7 155H16 spec wins — Intel Core Ultra 9 275HX
InnoReviews verdict
Intel Core Ultra 9 275HX wins this laptop processor face-off, 70.9 to 50.5, pulling ahead mainly in Multi-core (+44) and Single-core (+30). Intel Core Ultra 7 155H 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 155H
- Stronger efficiency score: 67 vs 44
- Stronger iGPU score: 74 vs 64
- 49% lower Base TDP: 28 W vs 55 W
- 13% higher iGPU clock: 2,250 MHz vs 2,000 MHz
Reasons to pick the Intel Core Ultra 9 275HX
- Stronger Single-core score: 73 vs 42
- Stronger Multi-core score: 81 vs 37
- Stronger platform score: 74 vs 63
- 167% higher Max memory: 256 GB vs 96 GB
- 135% higher Cinebench R23 (multi): 35,000 vs 14,900
General
| Spec | Intel Core Ultra 7 155H | Intel Core Ultra 9 275HX |
|---|---|---|
| Announced | 2023 | 2025 |
| Process | 7 nm | 3 nm+57% |
| Base TDP | 28 W+49% | 55 W |
| Max TDP | 115 W | 160 W+39% |
Cores & Clocks
| Spec | Intel Core Ultra 7 155H | Intel Core Ultra 9 275HX |
|---|---|---|
| Cores | 16 | 24+50% |
| Performance cores | 6 | 8+33% |
| Efficiency cores | 10 | 16+60% |
| Threads | 22 | 24+9% |
| Base clock | 1.4 GHz | 2.7 GHz+93% |
| Boost clock | 4.8 GHz | 5.4 GHz+13% |
| L3 cache | 24 MB | 36 MB+50% |
Integrated GPU
| Spec | Intel Core Ultra 7 155H | Intel Core Ultra 9 275HX |
|---|---|---|
| iGPU | Intel Arc Graphics (8 Xe) | Intel Arc Graphics (4 Xe) |
| iGPU clock | 2,250 MHz+13% | 2,000 MHz |
Memory
| Spec | Intel Core Ultra 7 155H | Intel Core Ultra 9 275HX |
|---|---|---|
| Memory support | LPDDR5X-7467 / DDR5-5600 | DDR5-6400 |
| Max memory | 96 GB | 256 GB+167% |
Benchmarks
| Spec | Intel Core Ultra 7 155H | Intel Core Ultra 9 275HX |
|---|---|---|
| Geekbench 6 (single) | 2,320 | 3,100+34% |
| Geekbench 6 (multi) | 12,100 | 21,800+80% |
| Cinebench R23 (single) | 1,700 | 2,200+29% |
| Cinebench R23 (multi) | 14,900 | 35,000+135% |
| PassMark | 27,100 | 56,500+108% |
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