Intel Core 3 100U vs Intel Core Ultra 7 251HX
49.4Single-core66.6
33.6Multi-core65.1
75.3Efficiencyspec-based44.4
45.9Platformspec-based68.1
1 spec wins — Intel Core 3 100U14 spec wins — Intel Core Ultra 7 251HX
InnoReviews verdict
Intel Core Ultra 7 251HX wins this laptop processor face-off, 62.6 to 47, pulling ahead mainly in multi-core (+31) and single-core (+17). Intel Core 3 100U 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 3 100U
- 73% lower Base TDP: 15 W vs 55 W
Reasons to pick the Intel Core Ultra 7 251HX
- Stronger single-core score: 67 vs 49
- Stronger multi-core score: 65 vs 34
- 282% higher PassMark: 47,051 vs 12,302
- 200% higher cores: 18 vs 6
- 200% higher Performance cores: 6 vs 2
General
| Spec | Intel Core 3 100U | Intel Core Ultra 7 251HX |
|---|---|---|
| Announced | 2024 | 2026 |
| Process | 10 nm | 3 nm+70% |
| Base TDP | 15 W+73% | 55 W |
| Max TDP | 55 W | 160 W+191% |
Cores & Clocks
| Spec | Intel Core 3 100U | Intel Core Ultra 7 251HX |
|---|---|---|
| Cores | 6 | 18+200% |
| Performance cores | 2 | 6+200% |
| Efficiency cores | 4 | 12+200% |
| Threads | 8 | 18+125% |
| Base clock | 1.2 GHz | 2.9 GHz+142% |
| Boost clock | 4.7 GHz | 5.1 GHz+9% |
| L3 cache | 10 MB | 30 MB+200% |
Integrated GPU
| Spec | Intel Core 3 100U | Intel Core Ultra 7 251HX |
|---|---|---|
| iGPU | Intel Graphics (64 EU) | Intel Graphics (3 Xe) |
| iGPU clock | 1,250 MHz | 1,800 MHz |
Memory
| Spec | Intel Core 3 100U | Intel Core Ultra 7 251HX |
|---|---|---|
| Memory support | DDR5-5200 / DDR4-3200 / LPDDR5X-5200 / LPDDR4X-4267 | DDR5-6400 |
| Max memory | 96 GB | 256 GB+167% |
Benchmarks
| Spec | Intel Core 3 100U | Intel Core Ultra 7 251HX |
|---|---|---|
| Geekbench 6 (single) | 2,295Bottom 35% | 2,762+20%Top 32% |
| Geekbench 6 (multi) | 6,940Bottom 19% | 14,233+105%Top 29% |
| Cinebench R23 (single) | — | 1,941Top 26% |
| Cinebench R23 (multi) | — | 26,001Top 11% |
| PassMark | 12,302Bottom 22% | 47,051+282%Top 8% |
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