Intel Core i3-N305 vs Intel Core Ultra 7 255HX
31.4Single-core72.8
28Multi-core73.8
75.3Efficiencyspec-based44.4
34.1iGPU—
30.5Platformspec-based69.6
1 spec wins — Intel Core i3-N30516 spec wins — Intel Core Ultra 7 255HX
InnoReviews verdict
Intel Core Ultra 7 255HX wins this laptop processor face-off, 67.9 to 36.9, pulling ahead mainly in multi-core (+46) and single-core (+41). 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
- 73% lower Base TDP: 15 W vs 55 W
Reasons to pick the Intel Core Ultra 7 255HX
- Stronger single-core score: 73 vs 31
- Stronger multi-core score: 74 vs 28
- 1500% higher Max memory: 256 GB vs 16 GB
- 529% higher Cinebench R23 (multi): 31,781 vs 5,049
- 413% higher PassMark: 47,933 vs 9,350
General
| Spec | Intel Core i3-N305 | Intel Core Ultra 7 255HX |
|---|---|---|
| Announced | 2023 | 2025 |
| Process | 10 nm | 3 nm+70% |
| Base TDP | 15 W+73% | 55 W |
| Max TDP | 35 W | 160 W+357% |
Cores & Clocks
| Spec | Intel Core i3-N305 | Intel Core Ultra 7 255HX |
|---|---|---|
| Cores | 8 | 20+150% |
| Performance cores | 0 | 8 |
| Efficiency cores | 8 | 12+50% |
| Threads | 8 | 20+150% |
| Base clock | 1.8 GHz | 2.4 GHz+33% |
| Boost clock | 3.8 GHz | 5.2 GHz+37% |
| L3 cache | 6 MB | 30 MB+400% |
Integrated GPU
| Spec | Intel Core i3-N305 | Intel Core Ultra 7 255HX |
|---|---|---|
| iGPU | Intel UHD Graphics (32 EU) | Intel Graphics (4 Xe-cores) |
| iGPU clock | 1,250 MHz | 1,850 MHz |
Memory
| Spec | Intel Core i3-N305 | Intel Core Ultra 7 255HX |
|---|---|---|
| Memory support | DDR4-3200, DDR5-4800, LPDDR5-4800 | DDR5-6400 |
| Max memory | 16 GB | 256 GB+1500% |
Benchmarks
| Spec | Intel Core i3-N305 | Intel Core Ultra 7 255HX |
|---|---|---|
| Geekbench 6 (single) | 1,274Bottom 4% | 2,959+132%Top 17% |
| Geekbench 6 (multi) | 4,681Bottom 8% | 17,915+283%Top 12% |
| Cinebench R23 (single) | 983Bottom 7% | 2,154+119%Top 10% |
| Cinebench R23 (multi) | 5,049Bottom 12% | 31,781+529%Top 6% |
| PassMark | 9,350Bottom 15% | 47,933+413%Top 8% |
| 3DMark Time Spy Graphics (iGPU) | 567Bottom 20% | — |
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