Intel Core Ultra 7 155U vs Intel Core Ultra 9 275HX
54.1Single-core75.3
38.4Multi-core83.1
81.9Efficiencyspec-based44.4
—iGPU60.5
51.8Platformspec-based73.9
1 spec wins — Intel Core Ultra 7 155U16 spec wins — Intel Core Ultra 9 275HX
InnoReviews verdict
Intel Core Ultra 9 275HX wins this laptop processor face-off, 71.7 to 52.3, pulling ahead mainly in multi-core (+45) and single-core (+21). Intel Core Ultra 7 155U 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 155U
- 73% lower Base TDP: 15 W vs 55 W
Reasons to pick the Intel Core Ultra 9 275HX
- Stronger single-core score: 75 vs 54
- Stronger multi-core score: 83 vs 38
- 300% higher Performance cores: 8 vs 2
- 264% higher Cinebench R23 (multi): 35,000 vs 9,627
- 245% higher PassMark: 55,712 vs 16,133
General
| Spec | Intel Core Ultra 7 155U | Intel Core Ultra 9 275HX |
|---|---|---|
| Announced | 2023 | 2025 |
| Process | 7 nm | 3 nm+57% |
| Base TDP | 15 W+73% | 55 W |
| Max TDP | 57 W | 160 W+181% |
Cores & Clocks
| Spec | Intel Core Ultra 7 155U | Intel Core Ultra 9 275HX |
|---|---|---|
| Cores | 12 | 24+100% |
| Performance cores | 2 | 8+300% |
| Efficiency cores | 10 | 16+60% |
| Threads | 14 | 24+71% |
| Base clock | 1.7 GHz | 2.7 GHz+59% |
| Boost clock | 4.8 GHz | 5.4 GHz+13% |
| L3 cache | 12 MB | 36 MB+200% |
Integrated GPU
| Spec | Intel Core Ultra 7 155U | Intel Core Ultra 9 275HX |
|---|---|---|
| iGPU | Intel Graphics (4 Xe) | Intel Arc Graphics (4 Xe) |
| iGPU clock | 1,950 MHz | 2,000 MHz |
Memory
| Spec | Intel Core Ultra 7 155U | 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 155U | Intel Core Ultra 9 275HX |
|---|---|---|
| Geekbench 6 (single) | 2,195Bottom 30% | 3,100+41%Top 14% |
| Geekbench 6 (multi) | 8,981Bottom 31% | 21,800+143%Top 7% |
| Cinebench R23 (single) | 1,627Bottom 44% | 2,200+35%Top 8% |
| Cinebench R23 (multi) | 9,627Bottom 37% | 35,000+264%Top 6% |
| PassMark | 16,133Bottom 34% | 55,712+245%Top 6% |
| 3DMark Time Spy Graphics (iGPU) | — | 1,855Top 36% |
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