Intel Core i7-1255U vs Intel Core Ultra 7 355
52.8Single-core66.5
32.6Multi-core43.7
75.3Efficiencyspec-based81.4
55.7iGPU70.1
47.7Platformspec-based49.2
4 spec wins — Intel Core i7-1255U11 spec wins — Intel Core Ultra 7 355
InnoReviews verdict
Intel Core Ultra 7 355 wins this laptop processor face-off, 58.5 to 48.6, pulling ahead mainly in iGPU (+14) and single-core (+14). Intel Core i7-1255U 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 i7-1255U
- 100% higher Efficiency cores: 8 vs 4
- 50% higher threads: 12 vs 8
- 40% lower Base TDP: 15 W vs 25 W
- 25% higher cores: 10 vs 8
Reasons to pick the Intel Core Ultra 7 355
- Stronger single-core score: 67 vs 53
- Stronger multi-core score: 44 vs 33
- Stronger iGPU score: 70 vs 56
- 100% higher Performance cores: 4 vs 2
- 100% higher Max memory: 128 GB vs 64 GB
General
| Spec | Intel Core i7-1255U | Intel Core Ultra 7 355 |
|---|---|---|
| Announced | 2022 | 2026 |
| Process | 10 nm | 2 nm+80% |
| Base TDP | 15 W+40% | 25 W |
| Max TDP | 55 W | 55 W |
Cores & Clocks
| Spec | Intel Core i7-1255U | Intel Core Ultra 7 355 |
|---|---|---|
| Cores | 10+25% | 8 |
| Performance cores | 2 | 4+100% |
| Efficiency cores | 8+100% | 4 |
| Threads | 12+50% | 8 |
| Base clock | 1.7 GHz | 2.3 GHz+35% |
| Boost clock | 4.7 GHz | 4.7 GHz |
| L3 cache | 12 MB | 12 MB |
Integrated GPU
| Spec | Intel Core i7-1255U | Intel Core Ultra 7 355 |
|---|---|---|
| iGPU | Intel Iris Xe (96 EU) | Intel Graphics (4 Xe3-cores) |
| iGPU clock | 1,250 MHz | 2,500 MHz |
Memory
| Spec | Intel Core i7-1255U | Intel Core Ultra 7 355 |
|---|---|---|
| Memory support | LPDDR5-5200 / DDR5-4800 / LPDDR4X-4267 | LPDDR5X-7467 / DDR5-6400 |
| Max memory | 64 GB | 128 GB+100% |
Benchmarks
| Spec | Intel Core i7-1255U | Intel Core Ultra 7 355 |
|---|---|---|
| Geekbench 6 (single) | 2,130Bottom 24% | 2,725+28%Top 37% |
| Geekbench 6 (multi) | 6,600Bottom 17% | 11,367+72%Top 50% |
| Cinebench R23 (single) | 1,600Bottom 40% | 1,958+22%Top 23% |
| Cinebench R23 (multi) | 6,800Bottom 19% | 11,261+66%Bottom 48% |
| PassMark | 12,941Bottom 25% | 20,125+56%Top 50% |
| 3DMark Time Spy Graphics (iGPU) | 1,496Top 43% | 2,865+92%Top 20% |
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