FPSVersusCore Ultra 7 255U vs Core i7-13645HX
Performance score
Core Ultra 7 255U and Core i7-13645HX are almost equally fast (under 3% apart) — choose by price, socket and platform.
The score is our own estimate from the specs (cores, threads, clocks, architecture generation), not a benchmark run. 100 = the fastest CPU in our database.
Overview
| Core Ultra 7 255U | Core i7-13645HX | |
|---|---|---|
| Score (0–100) | 44.47 | 43.6 |
| Ranking position | 102 | 108 |
| Type | Laptop | Laptop |
| Manufacturer | Intel | Intel |
| Architecture | Arrow Lake | Raptor Lake |
| Release date | Q1 2025 | Q1 2026 |
Specifications
| Core Ultra 7 255U | Core i7-13645HX | |
|---|---|---|
| Cores | 12 | 14 |
| Threads | 14 | 20 |
| P + E cores | 2 + 10 | 6 + 8 |
| Boost clock | 5.2 GHz | 4.9 GHz |
| L3 cache | 12 MB | 24 MB |
| Unlocked multiplier | no | no |
| Integrated graphics | Intel Graphics | no |
| NPU (AI accelerator) | no | no |
Pros and cons
Core Ultra 7 255U
- 14% faster single core
- has integrated graphics (Intel Graphics)
Core i7-13645HX
- more cores: 14 vs 12
- more threads: 20 vs 14
- bigger L3 cache: 24 MB vs 12 MB
- newer: released in 2026
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