AMD Ryzen 5 8645HS vs Intel Core Ultra 7 255H
59.3Single-core69.7
44.1Multi-core56.8
65.4Efficiencyspec-based75.7
64.9iGPU75.9
58.8Platformspec-based60.5
2 spec wins — AMD Ryzen 5 8645HS14 spec wins — Intel Core Ultra 7 255H
InnoReviews verdict
Intel Core Ultra 7 255H wins this laptop processor face-off, 65.3 to 55.4, pulling ahead mainly in multi-core (+13) and iGPU (+11). 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
- 115% higher Base clock: 4.3 GHz vs 2 GHz
- 100% higher Max memory: 256 GB vs 128 GB
Reasons to pick the Intel Core Ultra 7 255H
- Stronger single-core score: 70 vs 59
- Stronger multi-core score: 57 vs 44
- Stronger iGPU score: 76 vs 65
- 167% higher cores: 16 vs 6
- 113% higher Max TDP: 115 W vs 54 W
General
| Spec | AMD Ryzen 5 8645HS | Intel Core Ultra 7 255H |
|---|---|---|
| Announced | 2023 | 2025 |
| Process | 4 nm | 3 nm+25% |
| Base TDP | 35 W | 28 W+20% |
| Max TDP | 54 W | 115 W+113% |
Cores & Clocks
| Spec | AMD Ryzen 5 8645HS | Intel Core Ultra 7 255H |
|---|---|---|
| Cores | 6 | 16+167% |
| Performance cores | 6 | 6 |
| Efficiency cores | — | 10 |
| Threads | 12 | 16+33% |
| Base clock | 4.3 GHz+115% | 2 GHz |
| Boost clock | 5 GHz | 5.1 GHz+2% |
| L3 cache | 16 MB | 24 MB+50% |
Integrated GPU
| Spec | AMD Ryzen 5 8645HS | Intel Core Ultra 7 255H |
|---|---|---|
| iGPU | AMD Radeon 760M | Intel Arc 140T |
| iGPU clock | 2,600 MHz | 2,250 MHz |
Memory
| Spec | AMD Ryzen 5 8645HS | Intel Core Ultra 7 255H |
|---|---|---|
| Memory support | LPDDR5X-7500 / DDR5-5600 | LPDDR5X-8400 / DDR5-6400 |
| Max memory | 256 GB+100% | 128 GB |
Benchmarks
| Spec | AMD Ryzen 5 8645HS | Intel Core Ultra 7 255H |
|---|---|---|
| Geekbench 6 (single) | 2,520Top 49% | 2,851+13%Top 29% |
| Geekbench 6 (multi) | 10,300Bottom 41% | 15,362+49%Top 22% |
| Cinebench R23 (single) | 1,700Top 48% | 2,055+21%Top 18% |
| Cinebench R23 (multi) | 13,000Top 47% | 18,624+43%Top 20% |
| PassMark | 21,977Top 45% | 30,782+40%Top 21% |
| 3DMark Time Spy Graphics (iGPU) | 2,260Top 32% | 3,719+65%Top 7% |
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 255Hvs Apple M4 (10-core)VSIntel Core Ultra 7 255Hvs AMD Ryzen 9 7945HXVSIntel Core Ultra 7 255Hvs AMD Ryzen AI 9 365VSIntel Core Ultra 7 255Hvs Intel Core Ultra 9 285HVS