Intel Core i7-1255U vs Intel Core i9-14900HX
35.6Single-core69.1
20Multi-core67.5
75.3Efficiency28.9
34iGPU50
47.7Platform78
1 spec wins — Intel Core i7-1255U16 spec wins — Intel Core i9-14900HX
InnoReviews verdict
Intel Core i9-14900HX wins this laptop processor face-off, 61.9 to 37.8, pulling ahead mainly in Multi-core (+48) and Single-core (+33). 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
- Stronger efficiency score: 75 vs 29
- 73% lower Base TDP: 15 W vs 55 W
Reasons to pick the Intel Core i9-14900HX
- Stronger Single-core score: 69 vs 36
- Stronger Multi-core score: 68 vs 20
- Stronger iGPU score: 50 vs 34
- Stronger platform score: 78 vs 48
- 344% higher Cinebench R23 (multi): 30,200 vs 6,800
General
| Spec | Intel Core i7-1255U | Intel Core i9-14900HX |
|---|---|---|
| Announced | 2022 | 2024 |
| Process | 10 nm | 10 nm |
| Base TDP | 15 W+73% | 55 W |
| Max TDP | 55 W | 157 W+185% |
Cores & Clocks
| Spec | Intel Core i7-1255U | Intel Core i9-14900HX |
|---|---|---|
| Cores | 10 | 24+140% |
| Performance cores | 2 | 8+300% |
| Efficiency cores | 8 | 16+100% |
| Threads | 12 | 32+167% |
| Base clock | 1.7 GHz | 2.2 GHz+29% |
| Boost clock | 4.7 GHz | 5.8 GHz+23% |
| L3 cache | 12 MB | 36 MB+200% |
Integrated GPU
| Spec | Intel Core i7-1255U | Intel Core i9-14900HX |
|---|---|---|
| iGPU | Intel Iris Xe (96 EU) | Intel UHD Graphics |
| iGPU clock | 1,250 MHz | 1,650 MHz+32% |
Memory
| Spec | Intel Core i7-1255U | Intel Core i9-14900HX |
|---|---|---|
| Memory support | LPDDR5-5200 / DDR5-4800 / LPDDR4X-4267 | DDR5-5600 / DDR4-3200 |
| Max memory | 64 GB | 192 GB+200% |
Benchmarks
| Spec | Intel Core i7-1255U | Intel Core i9-14900HX |
|---|---|---|
| Geekbench 6 (single) | 2,130 | 2,920+37% |
| Geekbench 6 (multi) | 6,600 | 18,100+174% |
| Cinebench R23 (single) | 1,600 | 2,190+37% |
| Cinebench R23 (multi) | 6,800 | 30,200+344% |
| PassMark | 13,000 | 47,000+262% |
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