AMD Ryzen 7 8840U vs AMD Ryzen 9 9955HX
62.9Single-core74.2
44.2Multi-core82
73.5Efficiencyspec-based42.2
68.5iGPU32.6
55.5Platformspec-based84.3
3 spec wins — AMD Ryzen 7 8840U11 spec wins — AMD Ryzen 9 9955HX
InnoReviews verdict
AMD Ryzen 9 9955HX wins this laptop processor face-off, 69.5 to 57.4, pulling ahead mainly in multi-core (+38) and single-core (+11). AMD Ryzen 7 8840U 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 8840U
- Stronger iGPU score: 69 vs 33
- 404% higher 3DMark Time Spy Graphics (iGPU): 2,659 vs 528
- 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 9955HX
- Stronger single-core score: 74 vs 63
- Stronger multi-core score: 82 vs 44
- 300% higher L3 cache: 64 MB vs 16 MB
- 208% higher Cinebench R23 (multi): 37,500 vs 12,191
- 167% higher Max memory: 256 GB vs 96 GB
General
| Spec | AMD Ryzen 7 8840U | AMD Ryzen 9 9955HX |
|---|---|---|
| Announced | 2023 | 2025 |
| Process | 4 nm | 4 nm |
| Base TDP | 28 W+49% | 55 W |
| Max TDP | 30 W | 75 W+150% |
Cores & Clocks
| Spec | AMD Ryzen 7 8840U | AMD Ryzen 9 9955HX |
|---|---|---|
| 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 8840U | AMD Ryzen 9 9955HX |
|---|---|---|
| iGPU | AMD Radeon 780M | AMD Radeon 610M |
| iGPU clock | 2,700 MHz | 2,200 MHz |
Memory
| Spec | AMD Ryzen 7 8840U | AMD Ryzen 9 9955HX |
|---|---|---|
| Memory support | DDR5-5600 / LPDDR5X-7500 | DDR5-5600 |
| Max memory | 96 GB | 256 GB+167% |
Benchmarks
| Spec | AMD Ryzen 7 8840U | AMD Ryzen 9 9955HX |
|---|---|---|
| Geekbench 6 (single) | — | 3,080Top 17% |
| Geekbench 6 (multi) | — | 19,500Top 12% |
| Cinebench R23 (single) | 1,619Bottom 43% | 2,150+33%Top 12% |
| Cinebench R23 (multi) | 12,191Bottom 50% | 37,500+208%Top 3% |
| PassMark | 23,390Top 40% | 56,261+141%Top 5% |
| 3DMark Time Spy Graphics (iGPU) | 2,659+404%Top 22% | 528Bottom 20% |
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