Intel Core Ultra 7 155H vs Intel Core Ultra 7 255H
56.9Single-core69.7
48.3Multi-core56.8
66.9Efficiencyspec-based75.7
72.7iGPU75.9
63.1Platformspec-based60.5
1 spec wins — Intel Core Ultra 7 155H11 spec wins — Intel Core Ultra 7 255H
InnoReviews verdict
Intel Core Ultra 7 255H wins this laptop processor face-off, 65.3 to 57.9, pulling ahead mainly in single-core (+13) and multi-core (+9). 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
- 38% higher threads: 22 vs 16
Reasons to pick the Intel Core Ultra 7 255H
- Stronger single-core score: 70 vs 57
- Stronger multi-core score: 57 vs 48
- Stronger iGPU score: 76 vs 73
- 57% lower process: 3 nm vs 7 nm
- 43% higher Base clock: 2 GHz vs 1.4 GHz
General
| Spec | Intel Core Ultra 7 155H | Intel Core Ultra 7 255H |
|---|---|---|
| Announced | 2023 | 2025 |
| Process | 7 nm | 3 nm+57% |
| Base TDP | 28 W | 28 W |
| Max TDP | 115 W | 115 W |
Cores & Clocks
| Spec | Intel Core Ultra 7 155H | Intel Core Ultra 7 255H |
|---|---|---|
| Cores | 16 | 16 |
| Performance cores | 6 | 6 |
| Efficiency cores | 10 | 10 |
| Threads | 22+38% | 16 |
| Base clock | 1.4 GHz | 2 GHz+43% |
| Boost clock | 4.8 GHz | 5.1 GHz+6% |
| L3 cache | 24 MB | 24 MB |
Integrated GPU
| Spec | Intel Core Ultra 7 155H | Intel Core Ultra 7 255H |
|---|---|---|
| iGPU | Intel Arc Graphics (8 Xe) | Intel Arc 140T |
| iGPU clock | 2,250 MHz | 2,250 MHz |
Memory
| Spec | Intel Core Ultra 7 155H | Intel Core Ultra 7 255H |
|---|---|---|
| Memory support | LPDDR5X-7467 / DDR5-5600 | LPDDR5X-8400 / DDR5-6400 |
| Max memory | 96 GB | 128 GB+33% |
Benchmarks
| Spec | Intel Core Ultra 7 155H | Intel Core Ultra 7 255H |
|---|---|---|
| Geekbench 6 (single) | 2,320Bottom 37% | 2,851+23%Top 29% |
| Geekbench 6 (multi) | 12,100Top 47% | 15,362+27%Top 23% |
| Cinebench R23 (single) | 1,700Top 49% | 2,055+21%Top 18% |
| Cinebench R23 (multi) | 14,900Top 33% | 18,624+25%Top 20% |
| PassMark | 24,448Top 37% | 30,782+26%Top 21% |
| 3DMark Time Spy Graphics (iGPU) | 3,225Top 14% | 3,719+15%Top 7% |
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