AMD Ryzen 7 8840U vs AMD Ryzen 9 7940HX
62.9Single-core64
44.2Multi-core71.4
73.5Efficiencyspec-based40
68.5iGPU—
55.5Platformspec-based75.4
4 spec wins — AMD Ryzen 7 8840U10 spec wins — AMD Ryzen 9 7940HX
InnoReviews verdict
AMD Ryzen 9 7940HX wins this laptop processor face-off, 64.8 to 57.4, pulling ahead mainly in multi-core (+27) and single-core (+1). 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
- 50% higher Max memory: 96 GB vs 64 GB
- 49% lower Base TDP: 28 W vs 55 W
- 38% higher Base clock: 3.3 GHz vs 2.4 GHz
- 20% lower process: 4 nm vs 5 nm
Reasons to pick the AMD Ryzen 9 7940HX
- Stronger multi-core score: 71 vs 44
- 300% higher L3 cache: 64 MB vs 16 MB
- 150% higher Max TDP: 75 W vs 30 W
- 141% higher Cinebench R23 (multi): 29,400 vs 12,191
- 126% higher PassMark: 52,889 vs 23,390
General
| Spec | AMD Ryzen 7 8840U | AMD Ryzen 9 7940HX |
|---|---|---|
| Announced | 2023 | 2024 |
| 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 8840U | AMD Ryzen 9 7940HX |
|---|---|---|
| Cores | 8 | 16+100% |
| Performance cores | 8 | 16+100% |
| Efficiency cores | — | 0 |
| Threads | 16 | 32+100% |
| Base clock | 3.3 GHz+38% | 2.4 GHz |
| Boost clock | 5.1 GHz | 5.2 GHz+2% |
| L3 cache | 16 MB | 64 MB+300% |
Integrated GPU
| Spec | AMD Ryzen 7 8840U | AMD Ryzen 9 7940HX |
|---|---|---|
| iGPU | AMD Radeon 780M | AMD Radeon 610M |
| iGPU clock | 2,700 MHz | 2,200 MHz |
Memory
| Spec | AMD Ryzen 7 8840U | AMD Ryzen 9 7940HX |
|---|---|---|
| Memory support | DDR5-5600 / LPDDR5X-7500 | DDR5-5200 |
| Max memory | 96 GB+50% | 64 GB |
Benchmarks
| Spec | AMD Ryzen 7 8840U | AMD Ryzen 9 7940HX |
|---|---|---|
| Geekbench 6 (single) | — | 2,751Top 33% |
| Geekbench 6 (multi) | — | 16,094Top 19% |
| Cinebench R23 (single) | 1,619Bottom 38% | 1,807+12%Top 39% |
| Cinebench R23 (multi) | 12,191Bottom 50% | 29,400+141%Top 8% |
| PassMark | 23,390Top 42% | 52,889+126%Top 7% |
| 3DMark Time Spy Graphics (iGPU) | 2,659Top 23% | — |
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