AMD Ryzen 7 7840U vs AMD Ryzen 9 7945HX
48.6Single-core63.7
36.7Multi-core71.2
74.2Efficiency39
92iGPU72
62.2Platform81.5
5 spec wins — AMD Ryzen 7 7840U11 spec wins — AMD Ryzen 9 7945HX
InnoReviews verdict
AMD Ryzen 9 7945HX wins this laptop processor face-off, 66.1 to 54.7, pulling ahead mainly in Multi-core (+35) and platform (+19). AMD Ryzen 7 7840U still makes sense if its price or standout specs fit your needs better.
Key differences
Reasons to pick the AMD Ryzen 7 7840U
- Stronger efficiency score: 74 vs 39
- Stronger iGPU score: 92 vs 72
- 300% higher Max memory: 256 GB vs 64 GB
- 49% lower Base TDP: 28 W vs 55 W
- 32% higher Base clock: 3.3 GHz vs 2.5 GHz
Reasons to pick the AMD Ryzen 9 7945HX
- Stronger Single-core score: 64 vs 49
- Stronger Multi-core score: 71 vs 37
- Stronger platform score: 82 vs 62
- 300% higher L3 cache: 64 MB vs 16 MB
- 150% higher Max TDP: 75 W vs 30 W
General
| Spec | AMD Ryzen 7 7840U | AMD Ryzen 9 7945HX |
|---|---|---|
| Announced | 2023 | 2023 |
| Process | 4 nm+20% | 5 nm |
| Base TDP | 28 W+49% | 55 W |
| Max TDP | 30 W | 75 W+150% |
Cores & Clocks
| Spec | AMD Ryzen 7 7840U | AMD Ryzen 9 7945HX |
|---|---|---|
| Cores | 8 | 16+100% |
| Performance cores | 8 | 16+100% |
| Threads | 16 | 32+100% |
| Base clock | 3.3 GHz+32% | 2.5 GHz |
| Boost clock | 5.1 GHz | 5.4 GHz+6% |
| L3 cache | 16 MB | 64 MB+300% |
Integrated GPU
| Spec | AMD Ryzen 7 7840U | AMD Ryzen 9 7945HX |
|---|---|---|
| iGPU | AMD Radeon 780M | AMD Radeon 610M |
| iGPU clock | 2,700 MHz+23% | 2,200 MHz |
Memory
| Spec | AMD Ryzen 7 7840U | AMD Ryzen 9 7945HX |
|---|---|---|
| Memory support | LPDDR5X-7500 / DDR5-5600 | DDR5-5200 |
| Max memory | 256 GB+300% | 64 GB |
Benchmarks
| Spec | AMD Ryzen 7 7840U | AMD Ryzen 9 7945HX |
|---|---|---|
| Geekbench 6 (single) | 2,580 | 2,900+12% |
| Geekbench 6 (multi) | 11,700 | 17,200+47% |
| Cinebench R23 (single) | 1,740 | 2,030+17% |
| Cinebench R23 (multi) | 14,500 | 34,100+135% |
| PassMark | 28,400 | 53,000+87% |
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