Intel Core Ultra 7 155H vs Intel Core Ultra 7 255HX
56.9Single-core72.8
48.3Multi-core73.8
66.9Efficiencyspec-based44.4
72.7iGPU—
63.1Platformspec-based69.6
2 spec wins — Intel Core Ultra 7 155H15 spec wins — Intel Core Ultra 7 255HX
InnoReviews verdict
Intel Core Ultra 7 255HX wins this laptop processor face-off, 67.9 to 57.9, pulling ahead mainly in multi-core (+26) and single-core (+16). 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
- 49% lower Base TDP: 28 W vs 55 W
- 10% higher threads: 22 vs 20
Reasons to pick the Intel Core Ultra 7 255HX
- Stronger single-core score: 73 vs 57
- Stronger multi-core score: 74 vs 48
- 167% higher Max memory: 256 GB vs 96 GB
- 113% higher Cinebench R23 (multi): 31,781 vs 14,900
- 96% higher PassMark: 47,933 vs 24,448
General
| Spec | Intel Core Ultra 7 155H | Intel Core Ultra 7 255HX |
|---|---|---|
| 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 7 255HX |
|---|---|---|
| Cores | 16 | 20+25% |
| Performance cores | 6 | 8+33% |
| Efficiency cores | 10 | 12+20% |
| Threads | 22+10% | 20 |
| Base clock | 1.4 GHz | 2.4 GHz+71% |
| Boost clock | 4.8 GHz | 5.2 GHz+8% |
| L3 cache | 24 MB | 30 MB+25% |
Integrated GPU
| Spec | Intel Core Ultra 7 155H | Intel Core Ultra 7 255HX |
|---|---|---|
| iGPU | Intel Arc Graphics (8 Xe) | Intel Graphics (4 Xe-cores) |
| iGPU clock | 2,250 MHz | 1,850 MHz |
Memory
| Spec | Intel Core Ultra 7 155H | Intel Core Ultra 7 255HX |
|---|---|---|
| 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 7 255HX |
|---|---|---|
| Geekbench 6 (single) | 2,320Bottom 32% | 2,959+28%Top 17% |
| Geekbench 6 (multi) | 12,100Top 46% | 17,915+48%Top 12% |
| Cinebench R23 (single) | 1,700Bottom 45% | 2,154+27%Top 10% |
| Cinebench R23 (multi) | 14,900Top 35% | 31,781+113%Top 6% |
| PassMark | 24,448Top 38% | 47,933+96%Top 8% |
| 3DMark Time Spy Graphics (iGPU) | 3,225Top 13% | — |
Related comparisons
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