Intel Core i5-1235U vs Intel Core Ultra 7 255HX
49.8Single-core72.8
31.4Multi-core73.8
75.3Efficiencyspec-based44.4
50.3iGPU—
47.7Platformspec-based69.6
1 spec wins — Intel Core i5-1235U16 spec wins — Intel Core Ultra 7 255HX
InnoReviews verdict
Intel Core Ultra 7 255HX wins this laptop processor face-off, 67.9 to 46.9, pulling ahead mainly in multi-core (+42) and single-core (+23). Intel Core i5-1235U 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 i5-1235U
- 73% lower Base TDP: 15 W vs 55 W
Reasons to pick the Intel Core Ultra 7 255HX
- Stronger single-core score: 73 vs 50
- Stronger multi-core score: 74 vs 31
- 413% higher Cinebench R23 (multi): 31,781 vs 6,200
- 300% higher Performance cores: 8 vs 2
- 300% higher Max memory: 256 GB vs 64 GB
General
| Spec | Intel Core i5-1235U | 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 i5-1235U | 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 | 1.3 GHz | 2.4 GHz+85% |
| Boost clock | 4.4 GHz | 5.2 GHz+18% |
| L3 cache | 12 MB | 30 MB+150% |
Integrated GPU
| Spec | Intel Core i5-1235U | Intel Core Ultra 7 255HX |
|---|---|---|
| iGPU | Intel Iris Xe (80 EU) | Intel Graphics (4 Xe-cores) |
| iGPU clock | 1,200 MHz | 1,850 MHz |
Memory
| Spec | Intel Core i5-1235U | 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 i5-1235U | Intel Core Ultra 7 255HX |
|---|---|---|
| Geekbench 6 (single) | 2,000Bottom 17% | 2,959+48%Top 17% |
| Geekbench 6 (multi) | 6,100Bottom 14% | 17,915+194%Top 12% |
| Cinebench R23 (single) | 1,520Bottom 29% | 2,154+42%Top 10% |
| Cinebench R23 (multi) | 6,200Bottom 17% | 31,781+413%Top 6% |
| PassMark | 12,415Bottom 22% | 47,933+286%Top 8% |
| 3DMark Time Spy Graphics (iGPU) | 1,175Bottom 42% | — |
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