Intel Core i7-1255U vs Intel Core Ultra 9 285HX
52.8Single-core76.8
32.6Multi-core83.4
75.3Efficiencyspec-based44.4
55.7iGPU60.5
47.7Platformspec-based73.9
1 spec wins — Intel Core i7-1255U17 spec wins — Intel Core Ultra 9 285HX
InnoReviews verdict
Intel Core Ultra 9 285HX wins this laptop processor face-off, 72.2 to 48.6, pulling ahead mainly in multi-core (+51) and single-core (+24). 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
- 73% lower Base TDP: 15 W vs 55 W
Reasons to pick the Intel Core Ultra 9 285HX
- Stronger single-core score: 77 vs 53
- Stronger multi-core score: 83 vs 33
- Stronger iGPU score: 61 vs 56
- 451% higher Cinebench R23 (multi): 37,500 vs 6,800
- 337% higher PassMark: 56,512 vs 12,941
General
| Spec | Intel Core i7-1255U | Intel Core Ultra 9 285HX |
|---|---|---|
| Announced | 2022 | 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 i7-1255U | Intel Core Ultra 9 285HX |
|---|---|---|
| Cores | 10 | 24+140% |
| Performance cores | 2 | 8+300% |
| Efficiency cores | 8 | 16+100% |
| Threads | 12 | 24+100% |
| Base clock | 1.7 GHz | 2.8 GHz+65% |
| Boost clock | 4.7 GHz | 5.5 GHz+17% |
| L3 cache | 12 MB | 36 MB+200% |
Integrated GPU
| Spec | Intel Core i7-1255U | Intel Core Ultra 9 285HX |
|---|---|---|
| iGPU | Intel Iris Xe (96 EU) | Intel Graphics (4 Xe-cores) |
| iGPU clock | 1,250 MHz | 2,000 MHz |
Memory
| Spec | Intel Core i7-1255U | Intel Core Ultra 9 285HX |
|---|---|---|
| Memory support | LPDDR5-5200 / DDR5-4800 / LPDDR4X-4267 | DDR5-6400 |
| Max memory | 64 GB | 256 GB+300% |
Benchmarks
| Spec | Intel Core i7-1255U | Intel Core Ultra 9 285HX |
|---|---|---|
| Geekbench 6 (single) | 2,130Bottom 21% | 3,150+48%Top 10% |
| Geekbench 6 (multi) | 6,600Bottom 16% | 20,500+211%Top 9% |
| Cinebench R23 (single) | 1,600Bottom 35% | 2,250+41%Top 3% |
| Cinebench R23 (multi) | 6,800Bottom 19% | 37,500+451%Top 2% |
| PassMark | 12,941Bottom 23% | 56,512+337%Top 3% |
| 3DMark Time Spy Graphics (iGPU) | 1,496Top 43% | 1,855+24%Top 37% |
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