AMD Ryzen 7 7840HS vs AMD Ryzen 9 9955HX
49.8Single-core70.9
40.8Multi-core81.4
65.4Efficiency42.2
92iGPU72
61.8Platform84.3
3 spec wins — AMD Ryzen 7 7840HS12 spec wins — AMD Ryzen 9 9955HX
InnoReviews verdict
AMD Ryzen 9 9955HX wins this laptop processor face-off, 72.4 to 55, pulling ahead mainly in Multi-core (+41) and platform (+23). AMD Ryzen 7 7840HS 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 7 7840HS
- Stronger efficiency score: 65 vs 42
- Stronger iGPU score: 92 vs 72
- 52% higher Base clock: 3.8 GHz vs 2.5 GHz
- 36% lower Base TDP: 35 W vs 55 W
- 23% higher iGPU clock: 2,700 MHz vs 2,200 MHz
Reasons to pick the AMD Ryzen 9 9955HX
- Stronger Single-core score: 71 vs 50
- Stronger Multi-core score: 81 vs 41
- Stronger platform score: 84 vs 62
- 300% higher L3 cache: 64 MB vs 16 MB
- 126% higher Cinebench R23 (multi): 37,500 vs 16,600
General
| Spec | AMD Ryzen 7 7840HS | AMD Ryzen 9 9955HX |
|---|---|---|
| Announced | 2023 | 2025 |
| Process | 4 nm | 4 nm |
| Base TDP | 35 W+36% | 55 W |
| Max TDP | 54 W | 75 W+39% |
Cores & Clocks
| Spec | AMD Ryzen 7 7840HS | AMD Ryzen 9 9955HX |
|---|---|---|
| Cores | 8 | 16+100% |
| Performance cores | 8 | 16+100% |
| Threads | 16 | 32+100% |
| Base clock | 3.8 GHz+52% | 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 7840HS | AMD Ryzen 9 9955HX |
|---|---|---|
| iGPU | AMD Radeon 780M | AMD Radeon 610M |
| iGPU clock | 2,700 MHz+23% | 2,200 MHz |
Memory
| Spec | AMD Ryzen 7 7840HS | AMD Ryzen 9 9955HX |
|---|---|---|
| Memory support | LPDDR5X-7500 / DDR5-5600 | DDR5-5600 |
| Max memory | 256 GB | 256 GB |
Benchmarks
| Spec | AMD Ryzen 7 7840HS | AMD Ryzen 9 9955HX |
|---|---|---|
| Geekbench 6 (single) | 2,610 | 3,080+18% |
| Geekbench 6 (multi) | 12,600 | 19,500+55% |
| Cinebench R23 (single) | 1,760 | 2,150+22% |
| Cinebench R23 (multi) | 16,600 | 37,500+126% |
| PassMark | 30,600 | 62,000+103% |
Related comparisons
AMD Ryzen 7 7840HSvs AMD Ryzen 7 8845HSVSAMD Ryzen 7 7840HSvs AMD Ryzen 7 7840UVSAMD Ryzen 7 7840HSvs Qualcomm Snapdragon X Elite X1E-84-100VSAMD Ryzen 7 7840HSvs AMD Ryzen 9 8945HSVSAMD Ryzen 9 9955HXvs Intel Core Ultra 9 275HXVSAMD Ryzen 9 9955HXvs AMD Ryzen AI Max+ 395VSAMD Ryzen 9 9955HXvs Apple M4 Pro (14-core)VSAMD Ryzen 9 9955HXvs Apple M3 Max (16-core)VS