Intel Core i7-1355U vs Intel Core Ultra 9 275HX
60.9Single-core75.3
37.1Multi-core83.1
75.3Efficiencyspec-based44.4
55.7iGPU60.5
50.3Platformspec-based73.9
1 spec wins — Intel Core i7-1355U17 spec wins — Intel Core Ultra 9 275HX
InnoReviews verdict
Intel Core Ultra 9 275HX wins this laptop processor face-off, 71.7 to 52.6, pulling ahead mainly in multi-core (+46) and single-core (+14). Intel Core i7-1355U 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 i7-1355U
- 73% lower Base TDP: 15 W vs 55 W
Reasons to pick the Intel Core Ultra 9 275HX
- Stronger single-core score: 75 vs 61
- Stronger multi-core score: 83 vs 37
- Stronger iGPU score: 61 vs 56
- 305% higher Cinebench R23 (multi): 35,000 vs 8,637
- 303% higher PassMark: 55,712 vs 13,837
General
| Spec | Intel Core i7-1355U | Intel Core Ultra 9 275HX |
|---|---|---|
| Announced | 2023 | 2025 |
| Process | 10 nm | 3 nm+70% |
| Base TDP | 15 W+73% | 55 W |
| Max TDP | 55 W | 160 W+191% |
Cores & Clocks
| Spec | Intel Core i7-1355U | Intel Core Ultra 9 275HX |
|---|---|---|
| Cores | 10 | 24+140% |
| Performance cores | 2 | 8+300% |
| Efficiency cores | 8 | 16+100% |
| Threads | 12 | 24+100% |
| Base clock | 1.7 GHz | 2.7 GHz+59% |
| Boost clock | 5 GHz | 5.4 GHz+8% |
| L3 cache | 12 MB | 36 MB+200% |
Integrated GPU
| Spec | Intel Core i7-1355U | Intel Core Ultra 9 275HX |
|---|---|---|
| iGPU | Intel Iris Xe (96 EU) | Intel Arc Graphics (4 Xe) |
| iGPU clock | 1,300 MHz | 2,000 MHz |
Memory
| Spec | Intel Core i7-1355U | Intel Core Ultra 9 275HX |
|---|---|---|
| Memory support | LPDDR5-6400 / DDR5-5200 / DDR4-3200 / LPDDR4X-4267 | DDR5-6400 |
| Max memory | 96 GB | 256 GB+167% |
Benchmarks
| Spec | Intel Core i7-1355U | Intel Core Ultra 9 275HX |
|---|---|---|
| Geekbench 6 (single) | 2,491Top 50% | 3,100+24%Top 14% |
| Geekbench 6 (multi) | 8,984Bottom 32% | 21,800+143%Top 7% |
| Cinebench R23 (single) | 1,805Top 38% | 2,200+22%Top 8% |
| Cinebench R23 (multi) | 8,637Bottom 29% | 35,000+305%Top 6% |
| PassMark | 13,837Bottom 27% | 55,712+303%Top 6% |
| 3DMark Time Spy Graphics (iGPU) | 1,496Top 42% | 1,855+24%Top 36% |
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