Intel Core i3-N305 vs Intel Core Ultra 7 255H
31.4Single-core69.7
28Multi-core56.8
75.3Efficiencyspec-based75.7
34.1iGPU75.9
30.5Platformspec-based60.5
1 spec wins — Intel Core i3-N30517 spec wins — Intel Core Ultra 7 255H
InnoReviews verdict
Intel Core Ultra 7 255H wins this laptop processor face-off, 65.3 to 36.9, pulling ahead mainly in iGPU (+42) and single-core (+38). 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
- 46% lower Base TDP: 15 W vs 28 W
Reasons to pick the Intel Core Ultra 7 255H
- Stronger single-core score: 70 vs 31
- Stronger multi-core score: 57 vs 28
- Stronger iGPU score: 76 vs 34
- 700% higher Max memory: 128 GB vs 16 GB
- 556% higher 3DMark Time Spy Graphics (iGPU): 3,719 vs 567
General
| Spec | Intel Core i3-N305 | Intel Core Ultra 7 255H |
|---|---|---|
| Announced | 2023 | 2025 |
| Process | 10 nm | 3 nm+70% |
| Base TDP | 15 W+46% | 28 W |
| Max TDP | 35 W | 115 W+229% |
Cores & Clocks
| Spec | Intel Core i3-N305 | Intel Core Ultra 7 255H |
|---|---|---|
| Cores | 8 | 16+100% |
| Performance cores | 0 | 6 |
| Efficiency cores | 8 | 10+25% |
| Threads | 8 | 16+100% |
| Base clock | 1.8 GHz | 2 GHz+11% |
| Boost clock | 3.8 GHz | 5.1 GHz+34% |
| L3 cache | 6 MB | 24 MB+300% |
Integrated GPU
| Spec | Intel Core i3-N305 | Intel Core Ultra 7 255H |
|---|---|---|
| iGPU | Intel UHD Graphics (32 EU) | Intel Arc 140T |
| iGPU clock | 1,250 MHz | 2,250 MHz |
Memory
| Spec | Intel Core i3-N305 | Intel Core Ultra 7 255H |
|---|---|---|
| Memory support | DDR4-3200, DDR5-4800, LPDDR5-4800 | LPDDR5X-8400 / DDR5-6400 |
| Max memory | 16 GB | 128 GB+700% |
Benchmarks
| Spec | Intel Core i3-N305 | Intel Core Ultra 7 255H |
|---|---|---|
| Geekbench 6 (single) | 1,274Bottom 6% | 2,851+124%Top 29% |
| Geekbench 6 (multi) | 4,681Bottom 9% | 15,362+228%Top 23% |
| Cinebench R23 (single) | 983Bottom 9% | 2,055+109%Top 18% |
| Cinebench R23 (multi) | 5,049Bottom 13% | 18,624+269%Top 20% |
| PassMark | 9,350Bottom 17% | 30,782+229%Top 21% |
| 3DMark Time Spy Graphics (iGPU) | 567Bottom 23% | 3,719+556%Top 7% |
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