Intel Core i7-1255U vs Intel Core i9-12900HK
52.8Single-core60.5
32.6Multi-core51
75.3Efficiencyspec-based40.5
55.7iGPU55.7
47.7Platformspec-based59
1 spec wins — Intel Core i7-1255U12 spec wins — Intel Core i9-12900HK
InnoReviews verdict
Intel Core i9-12900HK wins this laptop processor face-off, 53.5 to 48.6, pulling ahead mainly in multi-core (+18) and single-core (+8). 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
- 67% lower Base TDP: 15 W vs 45 W
Reasons to pick the Intel Core i9-12900HK
- Stronger single-core score: 61 vs 53
- Stronger multi-core score: 51 vs 33
- 200% higher Performance cores: 6 vs 2
- 159% higher Cinebench R23 (multi): 17,600 vs 6,800
- 109% higher Max TDP: 115 W vs 55 W
General
| Spec | Intel Core i7-1255U | Intel Core i9-12900HK |
|---|---|---|
| Announced | 2022 | 2022 |
| Process | 10 nm | 10 nm |
| Base TDP | 15 W+67% | 45 W |
| Max TDP | 55 W | 115 W+109% |
Cores & Clocks
| Spec | Intel Core i7-1255U | Intel Core i9-12900HK |
|---|---|---|
| Cores | 10 | 14+40% |
| Performance cores | 2 | 6+200% |
| Efficiency cores | 8 | 8 |
| Threads | 12 | 20+67% |
| Base clock | 1.7 GHz | 2.5 GHz+47% |
| Boost clock | 4.7 GHz | 5 GHz+6% |
| L3 cache | 12 MB | 24 MB+100% |
Integrated GPU
| Spec | Intel Core i7-1255U | Intel Core i9-12900HK |
|---|---|---|
| iGPU | Intel Iris Xe (96 EU) | Intel Iris Xe (96 EU) |
| iGPU clock | 1,250 MHz | 1,450 MHz |
Memory
| Spec | Intel Core i7-1255U | Intel Core i9-12900HK |
|---|---|---|
| Memory support | LPDDR5-5200 / DDR5-4800 / LPDDR4X-4267 | DDR5-4800 / LPDDR5-5200 / DDR4-3200 |
| Max memory | 64 GB | 64 GB |
Benchmarks
| Spec | Intel Core i7-1255U | Intel Core i9-12900HK |
|---|---|---|
| Geekbench 6 (single) | 2,130Bottom 21% | 2,450+15%Bottom 44% |
| Geekbench 6 (multi) | 6,600Bottom 16% | 12,700+92%Top 38% |
| Cinebench R23 (single) | 1,600Bottom 35% | 1,810+13%Top 38% |
| Cinebench R23 (multi) | 6,800Bottom 19% | 17,600+159%Top 25% |
| PassMark | 12,941Bottom 23% | 24,954+93%Top 35% |
| 3DMark Time Spy Graphics (iGPU) | 1,496Top 43% | 1,496Top 43% |
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