AMD Ryzen 7 7840U vs AMD Ryzen 9 7940HS
60.8Single-core61.5
47.5Multi-core50.7
73.5Efficiencyspec-based65.4
69.7iGPU69.7
61.8Platformspec-based61.8
1 spec wins — AMD Ryzen 7 7840U9 spec wins — AMD Ryzen 9 7940HS
InnoReviews verdict
This one is close to a dead heat: AMD Ryzen 7 7840U scores 59.1 against 59.2 for AMD Ryzen 9 7940HS. Pick by the categories that matter to you — AMD Ryzen 9 7940HS edges ahead in multi-core and single-core, or by price.
Which would you pick?
Key differences
Reasons to pick the AMD Ryzen 7 7840U
- 20% lower Base TDP: 28 W vs 35 W
Reasons to pick the AMD Ryzen 9 7940HS
- Stronger multi-core score: 51 vs 48
- 80% higher Max TDP: 54 W vs 30 W
- 22% higher PassMark: 29,702 vs 24,388
- 21% higher Base clock: 4 GHz vs 3.3 GHz
- 12% higher Cinebench R23 (multi): 16,285 vs 14,500
General
| Spec | AMD Ryzen 7 7840U | AMD Ryzen 9 7940HS |
|---|---|---|
| Announced | 2023 | 2023 |
| Process | 4 nm | 4 nm |
| Base TDP | 28 W+20% | 35 W |
| Max TDP | 30 W | 54 W+80% |
Cores & Clocks
| Spec | AMD Ryzen 7 7840U | AMD Ryzen 9 7940HS |
|---|---|---|
| Cores | 8 | 8 |
| Performance cores | 8 | 8 |
| Efficiency cores | — | 0 |
| Threads | 16 | 16 |
| Base clock | 3.3 GHz | 4 GHz+21% |
| Boost clock | 5.1 GHz | 5.2 GHz+2% |
| L3 cache | 16 MB | 16 MB |
Integrated GPU
| Spec | AMD Ryzen 7 7840U | AMD Ryzen 9 7940HS |
|---|---|---|
| iGPU | AMD Radeon 780M | AMD Radeon 780M |
| iGPU clock | 2,700 MHz | 2,800 MHz |
Memory
| Spec | AMD Ryzen 7 7840U | AMD Ryzen 9 7940HS |
|---|---|---|
| Memory support | LPDDR5X-7500 / DDR5-5600 | LPDDR5X-7500 / DDR5-5600 |
| Max memory | 256 GB | 256 GB |
Benchmarks
| Spec | AMD Ryzen 7 7840U | AMD Ryzen 9 7940HS |
|---|---|---|
| Geekbench 6 (single) | 2,580Bottom 50% | 2,591Top 49% |
| Geekbench 6 (multi) | 11,700Top 50% | 12,005+3%Top 48% |
| Cinebench R23 (single) | 1,740Bottom 43% | 1,774+2%Top 50% |
| Cinebench R23 (multi) | 14,500Top 45% | 16,285+12%Top 38% |
| PassMark | 24,388Top 43% | 29,702+22%Top 27% |
| PassMark (single thread) | 3,538Bottom 40% | 3,845+9%Top 37% |
| 3DMark Time Spy Graphics (iGPU) | 2,808Top 24% | 2,808Top 24% |
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