AMD Ryzen 5 8645HS vs Intel Core Ultra 7 251HX
59.3Single-core66.6
44.1Multi-core65.1
65.4Efficiencyspec-based44.4
64.9iGPU—
58.8Platformspec-based68.1
2 spec wins — AMD Ryzen 5 8645HS12 spec wins — Intel Core Ultra 7 251HX
InnoReviews verdict
Intel Core Ultra 7 251HX wins this laptop processor face-off, 62.6 to 55.4, pulling ahead mainly in multi-core (+21) and single-core (+7). 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
- 48% higher Base clock: 4.3 GHz vs 2.9 GHz
- 36% lower Base TDP: 35 W vs 55 W
Reasons to pick the Intel Core Ultra 7 251HX
- Stronger single-core score: 67 vs 59
- Stronger multi-core score: 65 vs 44
- 200% higher cores: 18 vs 6
- 196% higher Max TDP: 160 W vs 54 W
- 114% higher PassMark: 47,051 vs 21,977
General
| Spec | AMD Ryzen 5 8645HS | Intel Core Ultra 7 251HX |
|---|---|---|
| Announced | 2023 | 2026 |
| 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 251HX |
|---|---|---|
| Cores | 6 | 18+200% |
| Performance cores | 6 | 6 |
| Efficiency cores | — | 12 |
| Threads | 12 | 18+50% |
| Base clock | 4.3 GHz+48% | 2.9 GHz |
| Boost clock | 5 GHz | 5.1 GHz+2% |
| L3 cache | 16 MB | 30 MB+88% |
Integrated GPU
| Spec | AMD Ryzen 5 8645HS | Intel Core Ultra 7 251HX |
|---|---|---|
| iGPU | AMD Radeon 760M | Intel Graphics (3 Xe) |
| iGPU clock | 2,600 MHz | 1,800 MHz |
Memory
| Spec | AMD Ryzen 5 8645HS | Intel Core Ultra 7 251HX |
|---|---|---|
| Memory support | LPDDR5X-7500 / DDR5-5600 | DDR5-6400 |
| Max memory | 256 GB | 256 GB |
Benchmarks
| Spec | AMD Ryzen 5 8645HS | Intel Core Ultra 7 251HX |
|---|---|---|
| Geekbench 6 (single) | 2,520Top 49% | 2,762+10%Top 33% |
| Geekbench 6 (multi) | 10,300Bottom 41% | 14,233+38%Top 30% |
| Cinebench R23 (single) | 1,700Top 48% | 1,941+14%Top 26% |
| Cinebench R23 (multi) | 13,000Top 47% | 26,001+100%Top 12% |
| PassMark | 21,977Top 45% | 47,051+114%Top 8% |
| 3DMark Time Spy Graphics (iGPU) | 2,260Top 32% | — |
Related comparisons
AMD Ryzen 5 8645HSvs Intel Core Ultra 5 125HVSAMD Ryzen 5 8645HSvs Qualcomm Snapdragon X Elite X1E-78-100VSAMD Ryzen 5 8645HSvs AMD Ryzen 7 250VSAMD Ryzen 5 8645HSvs Intel Core i7-13700HVSIntel Core Ultra 7 251HXvs Apple M3 Pro (12-core)VSIntel Core Ultra 7 251HXvs AMD Ryzen AI 7 450VSIntel Core Ultra 7 251HXvs Intel Core i9-14900HXVSIntel Core Ultra 7 251HXvs Intel Core i9-13980HXVS