AMD Ryzen 7 7840U vs Intel Core i7-1255U
60.8Single-core52.8
47.5Multi-core32.6
73.5Efficiencyspec-based75.3
68.5iGPU55.7
61.8Platformspec-based47.7
14 spec wins — AMD Ryzen 7 7840U3 spec wins — Intel Core i7-1255U
InnoReviews verdict
AMD Ryzen 7 7840U wins this laptop processor face-off, 59 to 48.6, pulling ahead mainly in multi-core (+15) and iGPU (+13). Intel Core i7-1255U 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
- Stronger single-core score: 61 vs 53
- Stronger multi-core score: 48 vs 33
- Stronger iGPU score: 69 vs 56
- 300% higher Performance cores: 8 vs 2
- 300% higher Max memory: 256 GB vs 64 GB
Reasons to pick the Intel Core i7-1255U
- 83% higher Max TDP: 55 W vs 30 W
- 46% lower Base TDP: 15 W vs 28 W
- 25% higher cores: 10 vs 8
General
| Spec | AMD Ryzen 7 7840U | Intel Core i7-1255U |
|---|---|---|
| Announced | 2023 | 2022 |
| Process | 4 nm+60% | 10 nm |
| Base TDP | 28 W | 15 W+46% |
| Max TDP | 30 W | 55 W+83% |
Cores & Clocks
| Spec | AMD Ryzen 7 7840U | Intel Core i7-1255U |
|---|---|---|
| Cores | 8 | 10+25% |
| Performance cores | 8+300% | 2 |
| Efficiency cores | — | 8 |
| Threads | 16+33% | 12 |
| Base clock | 3.3 GHz+94% | 1.7 GHz |
| Boost clock | 5.1 GHz+9% | 4.7 GHz |
| L3 cache | 16 MB+33% | 12 MB |
Integrated GPU
| Spec | AMD Ryzen 7 7840U | Intel Core i7-1255U |
|---|---|---|
| iGPU | AMD Radeon 780M | Intel Iris Xe (96 EU) |
| iGPU clock | 2,700 MHz | 1,250 MHz |
Memory
| Spec | AMD Ryzen 7 7840U | Intel Core i7-1255U |
|---|---|---|
| Memory support | LPDDR5X-7500 / DDR5-5600 | LPDDR5-5200 / DDR5-4800 / LPDDR4X-4267 |
| Max memory | 256 GB+300% | 64 GB |
Benchmarks
| Spec | AMD Ryzen 7 7840U | Intel Core i7-1255U |
|---|---|---|
| Geekbench 6 (single) | 2,580+21%Top 46% | 2,130Bottom 21% |
| Geekbench 6 (multi) | 11,700+77%Top 49% | 6,600Bottom 16% |
| Cinebench R23 (single) | 1,740+9%Top 50% | 1,600Bottom 35% |
| Cinebench R23 (multi) | 14,500+113%Top 40% | 6,800Bottom 19% |
| PassMark | 24,388+88%Top 39% | 12,941Bottom 23% |
| 3DMark Time Spy Graphics (iGPU) | 2,659+78%Top 23% | 1,496Top 43% |
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