AMD Ryzen 7 8840U vs Intel Core Ultra 7 255HX
62.9Single-core72.8
44.2Multi-core73.8
73.5Efficiencyspec-based44.4
68.5iGPU—
55.5Platformspec-based69.6
2 spec wins — AMD Ryzen 7 8840U11 spec wins — Intel Core Ultra 7 255HX
InnoReviews verdict
Intel Core Ultra 7 255HX wins this laptop processor face-off, 67.9 to 57.4, pulling ahead mainly in multi-core (+30) and single-core (+10). 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
- 49% lower Base TDP: 28 W vs 55 W
- 38% higher Base clock: 3.3 GHz vs 2.4 GHz
Reasons to pick the Intel Core Ultra 7 255HX
- Stronger single-core score: 73 vs 63
- Stronger multi-core score: 74 vs 44
- 433% higher Max TDP: 160 W vs 30 W
- 167% higher Max memory: 256 GB vs 96 GB
- 161% higher Cinebench R23 (multi): 31,781 vs 12,191
General
| Spec | AMD Ryzen 7 8840U | Intel Core Ultra 7 255HX |
|---|---|---|
| Announced | 2023 | 2025 |
| Process | 4 nm | 3 nm+25% |
| Base TDP | 28 W+49% | 55 W |
| Max TDP | 30 W | 160 W+433% |
Cores & Clocks
| Spec | AMD Ryzen 7 8840U | Intel Core Ultra 7 255HX |
|---|---|---|
| Cores | 8 | 20+150% |
| Performance cores | 8 | 8 |
| Efficiency cores | — | 12 |
| Threads | 16 | 20+25% |
| Base clock | 3.3 GHz+38% | 2.4 GHz |
| Boost clock | 5.1 GHz | 5.2 GHz+2% |
| L3 cache | 16 MB | 30 MB+88% |
Integrated GPU
| Spec | AMD Ryzen 7 8840U | Intel Core Ultra 7 255HX |
|---|---|---|
| iGPU | AMD Radeon 780M | Intel Graphics (4 Xe-cores) |
| iGPU clock | 2,700 MHz | 1,850 MHz |
Memory
| Spec | AMD Ryzen 7 8840U | Intel Core Ultra 7 255HX |
|---|---|---|
| Memory support | DDR5-5600 / LPDDR5X-7500 | DDR5-6400 |
| Max memory | 96 GB | 256 GB+167% |
Benchmarks
| Spec | AMD Ryzen 7 8840U | Intel Core Ultra 7 255HX |
|---|---|---|
| Geekbench 6 (single) | — | 2,959Top 17% |
| Geekbench 6 (multi) | — | 17,915Top 12% |
| Cinebench R23 (single) | 1,619Bottom 38% | 2,154+33%Top 10% |
| Cinebench R23 (multi) | 12,191Bottom 50% | 31,781+161%Top 6% |
| PassMark | 23,390Top 42% | 47,933+105%Top 8% |
| 3DMark Time Spy Graphics (iGPU) | 2,659Top 23% | — |
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