Intel Core 3 100U vs Intel Core Ultra 7 255H
49.4Single-core69.7
33.6Multi-core56.8
75.3Efficiencyspec-based75.7
—iGPU75.9
45.9Platformspec-based60.5
1 spec wins — Intel Core 3 100U14 spec wins — Intel Core Ultra 7 255H
InnoReviews verdict
Intel Core Ultra 7 255H wins this laptop processor face-off, 65.3 to 47, pulling ahead mainly in multi-core (+23) and single-core (+20). 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
- 46% lower Base TDP: 15 W vs 28 W
Reasons to pick the Intel Core Ultra 7 255H
- Stronger single-core score: 70 vs 49
- Stronger multi-core score: 57 vs 34
- 200% higher Performance cores: 6 vs 2
- 167% higher cores: 16 vs 6
- 150% higher Efficiency cores: 10 vs 4
General
| Spec | Intel Core 3 100U | Intel Core Ultra 7 255H |
|---|---|---|
| Announced | 2024 | 2025 |
| Process | 10 nm | 3 nm+70% |
| Base TDP | 15 W+46% | 28 W |
| Max TDP | 55 W | 115 W+109% |
Cores & Clocks
| Spec | Intel Core 3 100U | Intel Core Ultra 7 255H |
|---|---|---|
| Cores | 6 | 16+167% |
| Performance cores | 2 | 6+200% |
| Efficiency cores | 4 | 10+150% |
| Threads | 8 | 16+100% |
| Base clock | 1.2 GHz | 2 GHz+67% |
| Boost clock | 4.7 GHz | 5.1 GHz+9% |
| L3 cache | 10 MB | 24 MB+140% |
Integrated GPU
| Spec | Intel Core 3 100U | Intel Core Ultra 7 255H |
|---|---|---|
| iGPU | Intel Graphics (64 EU) | Intel Arc 140T |
| iGPU clock | 1,250 MHz | 2,250 MHz |
Memory
| Spec | Intel Core 3 100U | Intel Core Ultra 7 255H |
|---|---|---|
| Memory support | DDR5-5200 / DDR4-3200 / LPDDR5X-5200 / LPDDR4X-4267 | LPDDR5X-8400 / DDR5-6400 |
| Max memory | 96 GB | 128 GB+33% |
Benchmarks
| Spec | Intel Core 3 100U | Intel Core Ultra 7 255H |
|---|---|---|
| Geekbench 6 (single) | 2,295Bottom 35% | 2,851+24%Top 28% |
| Geekbench 6 (multi) | 6,940Bottom 19% | 15,362+121%Top 21% |
| Cinebench R23 (single) | — | 2,055Top 17% |
| Cinebench R23 (multi) | — | 18,624Top 19% |
| PassMark | 12,302Bottom 22% | 30,782+150%Top 20% |
| 3DMark Time Spy Graphics (iGPU) | — | 3,719Top 7% |
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