AMD Ryzen 7 7840U vs AMD Ryzen 7 8745HX
60.8Single-core59.5
47.5Multi-core54.7
73.5Efficiencyspec-based40
68.5iGPU—
61.8Platformspec-based58.2
3 spec wins — AMD Ryzen 7 7840U7 spec wins — AMD Ryzen 7 8745HX
InnoReviews verdict
AMD Ryzen 7 7840U wins this laptop processor face-off, 59 to 54.2, pulling ahead mainly in single-core (+1). AMD Ryzen 7 8745HX 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 7840U
- 300% higher Max memory: 256 GB vs 64 GB
- 49% lower Base TDP: 28 W vs 55 W
- 20% lower process: 4 nm vs 5 nm
Reasons to pick the AMD Ryzen 7 8745HX
- Stronger multi-core score: 55 vs 48
- 150% higher Max TDP: 75 W vs 30 W
- 100% higher L3 cache: 32 MB vs 16 MB
- 29% higher PassMark: 31,433 vs 24,388
- 15% higher Geekbench 6 (multi): 13,482 vs 11,700
General
| Spec | AMD Ryzen 7 7840U | AMD Ryzen 7 8745HX |
|---|---|---|
| Announced | 2023 | 2025 |
| 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 7 8745HX |
|---|---|---|
| Cores | 8 | 8 |
| Performance cores | 8 | 8 |
| Efficiency cores | — | 0 |
| Threads | 16 | 16 |
| Base clock | 3.3 GHz | 3.6 GHz+9% |
| Boost clock | 5.1 GHz | 5.1 GHz |
| L3 cache | 16 MB | 32 MB+100% |
Integrated GPU
| Spec | AMD Ryzen 7 7840U | AMD Ryzen 7 8745HX |
|---|---|---|
| iGPU | AMD Radeon 780M | AMD Radeon 610M |
| iGPU clock | 2,700 MHz | 2,200 MHz |
Memory
| Spec | AMD Ryzen 7 7840U | AMD Ryzen 7 8745HX |
|---|---|---|
| Memory support | LPDDR5X-7500 / DDR5-5600 | DDR5-5200 |
| Max memory | 256 GB+300% | 64 GB |
Benchmarks
| Spec | AMD Ryzen 7 7840U | AMD Ryzen 7 8745HX |
|---|---|---|
| Geekbench 6 (single) | 2,580Top 46% | 2,777+8%Top 29% |
| Geekbench 6 (multi) | 11,700Top 49% | 13,482+15%Top 32% |
| Cinebench R23 (single) | 1,740Top 50% | — |
| Cinebench R23 (multi) | 14,500Top 40% | — |
| PassMark | 24,388Top 39% | 31,433+29%Top 20% |
| 3DMark Time Spy Graphics (iGPU) | 2,659Top 23% | — |
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