AMD Ryzen 5 8645HS vs Intel Core Ultra 7 255HX
59.3Single-core72.8
44.1Multi-core73.8
65.4Efficiencyspec-based44.4
64.9iGPU—
58.8Platformspec-based69.6
2 spec wins — AMD Ryzen 5 8645HS13 spec wins — Intel Core Ultra 7 255HX
InnoReviews verdict
Intel Core Ultra 7 255HX wins this laptop processor face-off, 67.9 to 55.4, pulling ahead mainly in multi-core (+30) and single-core (+14). AMD Ryzen 5 8645HS still makes sense if its price or standout specs fit your needs better.
Which would you pick?
Key differences
Reasons to pick the AMD Ryzen 5 8645HS
- 79% higher Base clock: 4.3 GHz vs 2.4 GHz
- 36% lower Base TDP: 35 W vs 55 W
Reasons to pick the Intel Core Ultra 7 255HX
- Stronger single-core score: 73 vs 59
- Stronger multi-core score: 74 vs 44
- 233% higher cores: 20 vs 6
- 196% higher Max TDP: 160 W vs 54 W
- 144% higher Cinebench R23 (multi): 31,781 vs 13,000
General
| Spec | AMD Ryzen 5 8645HS | Intel Core Ultra 7 255HX |
|---|---|---|
| Announced | 2023 | 2025 |
| Process | 4 nm | 3 nm+25% |
| Base TDP | 35 W+36% | 55 W |
| Max TDP | 54 W | 160 W+196% |
Cores & Clocks
| Spec | AMD Ryzen 5 8645HS | Intel Core Ultra 7 255HX |
|---|---|---|
| Cores | 6 | 20+233% |
| Performance cores | 6 | 8+33% |
| Efficiency cores | — | 12 |
| Threads | 12 | 20+67% |
| Base clock | 4.3 GHz+79% | 2.4 GHz |
| Boost clock | 5 GHz | 5.2 GHz+4% |
| L3 cache | 16 MB | 30 MB+88% |
Integrated GPU
| Spec | AMD Ryzen 5 8645HS | Intel Core Ultra 7 255HX |
|---|---|---|
| iGPU | AMD Radeon 760M | Intel Graphics (4 Xe-cores) |
| iGPU clock | 2,600 MHz | 1,850 MHz |
Memory
| Spec | AMD Ryzen 5 8645HS | Intel Core Ultra 7 255HX |
|---|---|---|
| Memory support | LPDDR5X-7500 / DDR5-5600 | DDR5-6400 |
| Max memory | 256 GB | 256 GB |
Benchmarks
| Spec | AMD Ryzen 5 8645HS | Intel Core Ultra 7 255HX |
|---|---|---|
| Geekbench 6 (single) | 2,520Bottom 49% | 2,959+17%Top 17% |
| Geekbench 6 (multi) | 10,300Bottom 41% | 17,915+74%Top 12% |
| Cinebench R23 (single) | 1,700Bottom 45% | 2,154+27%Top 10% |
| Cinebench R23 (multi) | 13,000Top 49% | 31,781+144%Top 6% |
| PassMark | 21,977Top 47% | 47,933+118%Top 8% |
| 3DMark Time Spy Graphics (iGPU) | 2,260Top 33% | — |
Related comparisons
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