Intel Core Ultra 7 155H vs Intel Core Ultra 7 251HX
56.9Single-core66.6
48.3Multi-core65.1
66.9Efficiencyspec-based44.4
72.7iGPU—
63.1Platformspec-based68.1
2 spec wins — Intel Core Ultra 7 155H14 spec wins — Intel Core Ultra 7 251HX
InnoReviews verdict
Intel Core Ultra 7 251HX wins this laptop processor face-off, 62.6 to 57.9, pulling ahead mainly in multi-core (+17) and single-core (+10). 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
- 22% higher threads: 22 vs 18
Reasons to pick the Intel Core Ultra 7 251HX
- Stronger single-core score: 67 vs 57
- Stronger multi-core score: 65 vs 48
- 167% higher Max memory: 256 GB vs 96 GB
- 107% higher Base clock: 2.9 GHz vs 1.4 GHz
- 92% higher PassMark: 47,051 vs 24,448
General
| Spec | Intel Core Ultra 7 155H | Intel Core Ultra 7 251HX |
|---|---|---|
| Announced | 2023 | 2026 |
| 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 251HX |
|---|---|---|
| Cores | 16 | 18+13% |
| Performance cores | 6 | 6 |
| Efficiency cores | 10 | 12+20% |
| Threads | 22+22% | 18 |
| Base clock | 1.4 GHz | 2.9 GHz+107% |
| Boost clock | 4.8 GHz | 5.1 GHz+6% |
| L3 cache | 24 MB | 30 MB+25% |
Integrated GPU
| Spec | Intel Core Ultra 7 155H | Intel Core Ultra 7 251HX |
|---|---|---|
| iGPU | Intel Arc Graphics (8 Xe) | Intel Graphics (3 Xe) |
| iGPU clock | 2,250 MHz | 1,800 MHz |
Memory
| Spec | Intel Core Ultra 7 155H | Intel Core Ultra 7 251HX |
|---|---|---|
| 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 251HX |
|---|---|---|
| Geekbench 6 (single) | 2,320Bottom 37% | 2,762+19%Top 33% |
| Geekbench 6 (multi) | 12,100Top 47% | 14,233+18%Top 30% |
| Cinebench R23 (single) | 1,700Top 49% | 1,941+14%Top 26% |
| Cinebench R23 (multi) | 14,900Top 33% | 26,001+75%Top 12% |
| PassMark | 24,448Top 37% | 47,051+92%Top 8% |
| 3DMark Time Spy Graphics (iGPU) | 3,225Top 14% | — |
Related comparisons
Intel Core Ultra 7 155Hvs Apple M3 (8-core)VSIntel Core Ultra 7 155Hvs AMD Ryzen 7 8840UVSIntel Core Ultra 7 155Hvs Intel Core Ultra 7 256VVSIntel Core Ultra 7 155Hvs Intel Core Ultra 7 258VVSIntel Core Ultra 7 251HXvs Apple M3 Pro (12-core)VSIntel Core Ultra 7 251HXvs AMD Ryzen AI 7 450VSIntel Core Ultra 7 251HXvs Intel Core i9-14900HXVSIntel Core Ultra 7 251HXvs Intel Core i9-13980HXVS