AMD Ryzen 5 8645HS vs AMD Ryzen 9 7940HX
59.3Single-core64
44.1Multi-core71.4
65.4Efficiencyspec-based40
64.9iGPU—
58.8Platformspec-based75.4
4 spec wins — AMD Ryzen 5 8645HS12 spec wins — AMD Ryzen 9 7940HX
InnoReviews verdict
AMD Ryzen 9 7940HX wins this laptop processor face-off, 64.8 to 55.4, pulling ahead mainly in multi-core (+27) and single-core (+5). 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
- 300% higher Max memory: 256 GB vs 64 GB
- 79% higher Base clock: 4.3 GHz vs 2.4 GHz
- 36% lower Base TDP: 35 W vs 55 W
- 20% lower process: 4 nm vs 5 nm
Reasons to pick the AMD Ryzen 9 7940HX
- Stronger single-core score: 64 vs 59
- Stronger multi-core score: 71 vs 44
- 300% higher L3 cache: 64 MB vs 16 MB
- 167% higher cores: 16 vs 6
- 167% higher Performance cores: 16 vs 6
General
| Spec | AMD Ryzen 5 8645HS | AMD Ryzen 9 7940HX |
|---|---|---|
| Announced | 2023 | 2024 |
| Process | 4 nm+20% | 5 nm |
| Base TDP | 35 W+36% | 55 W |
| Max TDP | 54 W | 75 W+39% |
Cores & Clocks
| Spec | AMD Ryzen 5 8645HS | AMD Ryzen 9 7940HX |
|---|---|---|
| Cores | 6 | 16+167% |
| Performance cores | 6 | 16+167% |
| Efficiency cores | — | 0 |
| Threads | 12 | 32+167% |
| Base clock | 4.3 GHz+79% | 2.4 GHz |
| Boost clock | 5 GHz | 5.2 GHz+4% |
| L3 cache | 16 MB | 64 MB+300% |
Integrated GPU
| Spec | AMD Ryzen 5 8645HS | AMD Ryzen 9 7940HX |
|---|---|---|
| iGPU | AMD Radeon 760M | AMD Radeon 610M |
| iGPU clock | 2,600 MHz | 2,200 MHz |
Memory
| Spec | AMD Ryzen 5 8645HS | AMD Ryzen 9 7940HX |
|---|---|---|
| Memory support | LPDDR5X-7500 / DDR5-5600 | DDR5-5200 |
| Max memory | 256 GB+300% | 64 GB |
Benchmarks
| Spec | AMD Ryzen 5 8645HS | AMD Ryzen 9 7940HX |
|---|---|---|
| Geekbench 6 (single) | 2,520Bottom 49% | 2,751+9%Top 33% |
| Geekbench 6 (multi) | 10,300Bottom 41% | 16,094+56%Top 19% |
| Cinebench R23 (single) | 1,700Bottom 45% | 1,807+6%Top 39% |
| Cinebench R23 (multi) | 13,000Top 49% | 29,400+126%Top 8% |
| PassMark | 21,977Top 47% | 52,889+141%Top 7% |
| 3DMark Time Spy Graphics (iGPU) | 2,260Top 33% | — |
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