Intel Core i3-N305 vs Intel Core i7-1255U
31.4Single-core52.8
28Multi-core32.6
75.3Efficiencyspec-based75.3
34.1iGPU55.7
30.5Platformspec-based47.7
2 spec wins — Intel Core i3-N30513 spec wins — Intel Core i7-1255U
InnoReviews verdict
Intel Core i7-1255U wins this laptop processor face-off, 48.6 to 36.9, pulling ahead mainly in iGPU (+22) and single-core (+21). Intel Core i3-N305 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 i3-N305
No decisive spec advantages — this side competes on price and preference.
Reasons to pick the Intel Core i7-1255U
- Stronger single-core score: 53 vs 31
- Stronger multi-core score: 33 vs 28
- Stronger iGPU score: 56 vs 34
- 300% higher Max memory: 64 GB vs 16 GB
- 164% higher 3DMark Time Spy Graphics (iGPU): 1,496 vs 567
General
| Spec | Intel Core i3-N305 | Intel Core i7-1255U |
|---|---|---|
| Announced | 2023 | 2022 |
| Process | 10 nm | 10 nm |
| Base TDP | 15 W | 15 W |
| Max TDP | 35 W | 55 W+57% |
Cores & Clocks
| Spec | Intel Core i3-N305 | Intel Core i7-1255U |
|---|---|---|
| Cores | 8 | 10+25% |
| Performance cores | 0 | 2 |
| Efficiency cores | 8 | 8 |
| Threads | 8 | 12+50% |
| Base clock | 1.8 GHz+6% | 1.7 GHz |
| Boost clock | 3.8 GHz | 4.7 GHz+24% |
| L3 cache | 6 MB | 12 MB+100% |
Integrated GPU
| Spec | Intel Core i3-N305 | Intel Core i7-1255U |
|---|---|---|
| iGPU | Intel UHD Graphics (32 EU) | Intel Iris Xe (96 EU) |
| iGPU clock | 1,250 MHz | 1,250 MHz |
Memory
| Spec | Intel Core i3-N305 | Intel Core i7-1255U |
|---|---|---|
| Memory support | DDR4-3200, DDR5-4800, LPDDR5-4800 | LPDDR5-5200 / DDR5-4800 / LPDDR4X-4267 |
| Max memory | 16 GB | 64 GB+300% |
Benchmarks
| Spec | Intel Core i3-N305 | Intel Core i7-1255U |
|---|---|---|
| Geekbench 6 (single) | 1,274Bottom 6% | 2,130+67%Bottom 25% |
| Geekbench 6 (multi) | 4,681Bottom 9% | 6,600+41%Bottom 17% |
| Cinebench R23 (single) | 983Bottom 9% | 1,600+63%Bottom 41% |
| Cinebench R23 (multi) | 5,049Bottom 13% | 6,800+35%Bottom 20% |
| PassMark | 9,350Bottom 17% | 12,941+38%Bottom 25% |
| 3DMark Time Spy Graphics (iGPU) | 567Bottom 23% | 1,496+164%Top 42% |
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