Intel Core i7-1255U vs Intel Core Ultra 7 255HX
52.8Single-core72.8
32.6Multi-core73.8
75.3Efficiencyspec-based44.4
55.7iGPU—
47.7Platformspec-based69.6
1 spec wins — Intel Core i7-1255U16 spec wins — Intel Core Ultra 7 255HX
InnoReviews verdict
Intel Core Ultra 7 255HX wins this laptop processor face-off, 67.9 to 48.6, pulling ahead mainly in multi-core (+41) and single-core (+20). 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 7 255HX
- Stronger single-core score: 73 vs 53
- Stronger multi-core score: 74 vs 33
- 367% higher Cinebench R23 (multi): 31,781 vs 6,800
- 300% higher Performance cores: 8 vs 2
- 300% higher Max memory: 256 GB vs 64 GB
General
| Spec | Intel Core i7-1255U | Intel Core Ultra 7 255HX |
|---|---|---|
| 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 7 255HX |
|---|---|---|
| Cores | 10 | 20+100% |
| Performance cores | 2 | 8+300% |
| Efficiency cores | 8 | 12+50% |
| Threads | 12 | 20+67% |
| Base clock | 1.7 GHz | 2.4 GHz+41% |
| Boost clock | 4.7 GHz | 5.2 GHz+11% |
| L3 cache | 12 MB | 30 MB+150% |
Integrated GPU
| Spec | Intel Core i7-1255U | Intel Core Ultra 7 255HX |
|---|---|---|
| iGPU | Intel Iris Xe (96 EU) | Intel Graphics (4 Xe-cores) |
| iGPU clock | 1,250 MHz | 1,850 MHz |
Memory
| Spec | Intel Core i7-1255U | Intel Core Ultra 7 255HX |
|---|---|---|
| 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 7 255HX |
|---|---|---|
| Geekbench 6 (single) | 2,130Bottom 21% | 2,959+39%Top 17% |
| Geekbench 6 (multi) | 6,600Bottom 16% | 17,915+171%Top 12% |
| Cinebench R23 (single) | 1,600Bottom 35% | 2,154+35%Top 10% |
| Cinebench R23 (multi) | 6,800Bottom 19% | 31,781+367%Top 6% |
| PassMark | 12,941Bottom 23% | 47,933+270%Top 8% |
| 3DMark Time Spy Graphics (iGPU) | 1,496Top 43% | — |
Related comparisons
Intel Core i7-1255Uvs AMD Ryzen 5 7530UVSIntel Core i7-1255Uvs Intel Core i5-12500HVSIntel Core i7-1255Uvs Qualcomm Snapdragon X X1-26-100VSIntel Core i7-1255Uvs AMD Ryzen 5 7535HSVSIntel Core Ultra 7 255HXvs AMD Ryzen AI 9 HX 470VSIntel Core Ultra 7 255HXvs Intel Core Ultra 7 356HVSIntel Core Ultra 7 255HXvs Intel Core Ultra X7 358HVSIntel Core Ultra 7 255HXvs Qualcomm Snapdragon X2 Elite X2E-80-100VS