Intel Core i3-N305 vs Intel Core Ultra 7 251HX
31.4Single-core66.6
28Multi-core65.1
75.3Efficiencyspec-based44.4
34.1iGPU—
30.5Platformspec-based68.1
1 spec wins — Intel Core i3-N30516 spec wins — Intel Core Ultra 7 251HX
InnoReviews verdict
Intel Core Ultra 7 251HX wins this laptop processor face-off, 62.6 to 36.9, pulling ahead mainly in multi-core (+37) and single-core (+35). 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 251HX
- Stronger single-core score: 67 vs 31
- Stronger multi-core score: 65 vs 28
- 1500% higher Max memory: 256 GB vs 16 GB
- 415% higher Cinebench R23 (multi): 26,001 vs 5,049
- 403% higher PassMark: 47,051 vs 9,350
General
| Spec | Intel Core i3-N305 | Intel Core Ultra 7 251HX |
|---|---|---|
| Announced | 2023 | 2026 |
| 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 251HX |
|---|---|---|
| Cores | 8 | 18+125% |
| Performance cores | 0 | 6 |
| Efficiency cores | 8 | 12+50% |
| Threads | 8 | 18+125% |
| Base clock | 1.8 GHz | 2.9 GHz+61% |
| Boost clock | 3.8 GHz | 5.1 GHz+34% |
| L3 cache | 6 MB | 30 MB+400% |
Integrated GPU
| Spec | Intel Core i3-N305 | Intel Core Ultra 7 251HX |
|---|---|---|
| iGPU | Intel UHD Graphics (32 EU) | Intel Graphics (3 Xe) |
| iGPU clock | 1,250 MHz | 1,800 MHz |
Memory
| Spec | Intel Core i3-N305 | Intel Core Ultra 7 251HX |
|---|---|---|
| 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 251HX |
|---|---|---|
| Geekbench 6 (single) | 1,274Bottom 6% | 2,762+117%Top 33% |
| Geekbench 6 (multi) | 4,681Bottom 9% | 14,233+204%Top 30% |
| Cinebench R23 (single) | 983Bottom 9% | 1,941+97%Top 26% |
| Cinebench R23 (multi) | 5,049Bottom 13% | 26,001+415%Top 12% |
| PassMark | 9,350Bottom 17% | 47,051+403%Top 8% |
| 3DMark Time Spy Graphics (iGPU) | 567Bottom 23% | — |
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