Intel Core Ultra 7 255HX vs Intel Core Ultra 7 356H
72.8Single-core80.3
73.8Multi-core57.5
44.4Efficiencyspec-based81.4
—iGPU70
69.6Platformspec-based58.2
11 spec wins — Intel Core Ultra 7 255HX3 spec wins — Intel Core Ultra 7 356H
InnoReviews verdict
This one is close to a dead heat: Intel Core Ultra 7 255HX scores 67.9 against 68.2 for Intel Core Ultra 7 356H. Pick by the categories that matter to you — Intel Core Ultra 7 356H edges ahead in single-core, or by price.
Which would you pick?
Key differences
Reasons to pick the Intel Core Ultra 7 255HX
- Stronger multi-core score: 74 vs 58
- 100% higher Max TDP: 160 W vs 80 W
- 100% higher Performance cores: 8 vs 4
- 100% higher Max memory: 256 GB vs 128 GB
- 71% higher Cinebench R23 (multi): 31,781 vs 18,586
Reasons to pick the Intel Core Ultra 7 356H
- Stronger single-core score: 80 vs 73
- 55% lower Base TDP: 25 W vs 55 W
- 33% lower process: 2 nm vs 3 nm
General
| Spec | Intel Core Ultra 7 255HX | Intel Core Ultra 7 356H |
|---|---|---|
| Announced | 2025 | 2026 |
| Process | 3 nm | 2 nm+33% |
| Base TDP | 55 W | 25 W+55% |
| Max TDP | 160 W+100% | 80 W |
Cores & Clocks
| Spec | Intel Core Ultra 7 255HX | Intel Core Ultra 7 356H |
|---|---|---|
| Cores | 20+25% | 16 |
| Performance cores | 8+100% | 4 |
| Efficiency cores | 12 | 12 |
| Threads | 20+25% | 16 |
| Base clock | 2.4 GHz+26% | 1.9 GHz |
| Boost clock | 5.2 GHz+11% | 4.7 GHz |
| L3 cache | 30 MB+67% | 18 MB |
Integrated GPU
| Spec | Intel Core Ultra 7 255HX | Intel Core Ultra 7 356H |
|---|---|---|
| iGPU | Intel Graphics (4 Xe-cores) | Intel Graphics (4 Xe3-cores) |
| iGPU clock | 1,850 MHz | 2,450 MHz |
Memory
| Spec | Intel Core Ultra 7 255HX | Intel Core Ultra 7 356H |
|---|---|---|
| Memory support | DDR5-6400 | LPDDR5X, DDR5 |
| Max memory | 256 GB+100% | 128 GB |
Benchmarks
| Spec | Intel Core Ultra 7 255HX | Intel Core Ultra 7 356H |
|---|---|---|
| Geekbench 6 (single) | 2,959Top 17% | — |
| Geekbench 6 (multi) | 17,915Top 12% | — |
| Cinebench R23 (single) | 2,154+6%Top 10% | 2,033Top 19% |
| Cinebench R23 (multi) | 31,781+71%Top 6% | 18,586Top 21% |
| PassMark | 47,933+40%Top 8% | 34,251Top 17% |
| 3DMark Time Spy Graphics (iGPU) | — | 2,846Top 21% |
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