Intel Core 5 315 vs Intel Core Ultra 7 251HX
54Single-core66.6
35.7Multi-core65.1
93Efficiencyspec-based44.4
37.9Platformspec-based68.1
2 spec wins — Intel Core 5 31512 spec wins — Intel Core Ultra 7 251HX
InnoReviews verdict
Intel Core Ultra 7 251HX wins this laptop processor face-off, 62.6 to 50.7, pulling ahead mainly in multi-core (+29) and single-core (+13). Intel Core 5 315 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 5 315
- 73% lower Base TDP: 15 W vs 55 W
- 33% lower process: 2 nm vs 3 nm
Reasons to pick the Intel Core Ultra 7 251HX
- Stronger single-core score: 67 vs 54
- Stronger multi-core score: 65 vs 36
- 400% higher L3 cache: 30 MB vs 6 MB
- 357% higher Max TDP: 160 W vs 35 W
- 300% higher Max memory: 256 GB vs 64 GB
General
| Spec | Intel Core 5 315 | Intel Core Ultra 7 251HX |
|---|---|---|
| Announced | 2026 | 2026 |
| Process | 2 nm+33% | 3 nm |
| Base TDP | 15 W+73% | 55 W |
| Max TDP | 35 W | 160 W+357% |
Cores & Clocks
| Spec | Intel Core 5 315 | Intel Core Ultra 7 251HX |
|---|---|---|
| Cores | 6 | 18+200% |
| Performance cores | 2 | 6+200% |
| Efficiency cores | 4 | 12+200% |
| Threads | 6 | 18+200% |
| Base clock | 1.5 GHz | 2.9 GHz+93% |
| Boost clock | 4.4 GHz | 5.1 GHz+16% |
| L3 cache | 6 MB | 30 MB+400% |
Integrated GPU
| Spec | Intel Core 5 315 | Intel Core Ultra 7 251HX |
|---|---|---|
| iGPU | Intel Graphics (2 Xe3-cores) | Intel Graphics (3 Xe) |
| iGPU clock | 2,300 MHz | 1,800 MHz |
Memory
| Spec | Intel Core 5 315 | Intel Core Ultra 7 251HX |
|---|---|---|
| Memory support | LPDDR5X-7467 / DDR5-6400 | DDR5-6400 |
| Max memory | 64 GB | 256 GB+300% |
Benchmarks
| Spec | Intel Core 5 315 | Intel Core Ultra 7 251HX |
|---|---|---|
| Geekbench 6 (single) | 2,516Bottom 51% | 2,762+10%Top 31% |
| Geekbench 6 (multi) | 7,454Bottom 23% | 14,233+91%Top 28% |
| Cinebench R23 (single) | — | 1,941Top 25% |
| Cinebench R23 (multi) | — | 26,001Top 11% |
| PassMark | 14,672Bottom 29% | 47,051+221%Top 8% |
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