AMD Ryzen 7 8840U vs Intel Core Ultra 7 255H
62.9Single-core69.7
44.2Multi-core56.8
73.5Efficiencyspec-based75.7
68.5iGPU75.9
55.5Platformspec-based60.5
2 spec wins — AMD Ryzen 7 8840U10 spec wins — Intel Core Ultra 7 255H
InnoReviews verdict
Intel Core Ultra 7 255H wins this laptop processor face-off, 65.3 to 57.4, pulling ahead mainly in multi-core (+13) and iGPU (+7). 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
- 65% higher Base clock: 3.3 GHz vs 2 GHz
- 33% higher Performance cores: 8 vs 6
Reasons to pick the Intel Core Ultra 7 255H
- Stronger single-core score: 70 vs 63
- Stronger multi-core score: 57 vs 44
- Stronger iGPU score: 76 vs 69
- 283% higher Max TDP: 115 W vs 30 W
- 100% higher cores: 16 vs 8
General
| Spec | AMD Ryzen 7 8840U | Intel Core Ultra 7 255H |
|---|---|---|
| Announced | 2023 | 2025 |
| Process | 4 nm | 3 nm+25% |
| Base TDP | 28 W | 28 W |
| Max TDP | 30 W | 115 W+283% |
Cores & Clocks
| Spec | AMD Ryzen 7 8840U | Intel Core Ultra 7 255H |
|---|---|---|
| Cores | 8 | 16+100% |
| Performance cores | 8+33% | 6 |
| Efficiency cores | — | 10 |
| Threads | 16 | 16 |
| Base clock | 3.3 GHz+65% | 2 GHz |
| Boost clock | 5.1 GHz | 5.1 GHz |
| L3 cache | 16 MB | 24 MB+50% |
Integrated GPU
| Spec | AMD Ryzen 7 8840U | Intel Core Ultra 7 255H |
|---|---|---|
| iGPU | AMD Radeon 780M | Intel Arc 140T |
| iGPU clock | 2,700 MHz | 2,250 MHz |
Memory
| Spec | AMD Ryzen 7 8840U | Intel Core Ultra 7 255H |
|---|---|---|
| Memory support | DDR5-5600 / LPDDR5X-7500 | LPDDR5X-8400 / DDR5-6400 |
| Max memory | 96 GB | 128 GB+33% |
Benchmarks
| Spec | AMD Ryzen 7 8840U | Intel Core Ultra 7 255H |
|---|---|---|
| Geekbench 6 (single) | — | 2,851Top 29% |
| Geekbench 6 (multi) | — | 15,362Top 22% |
| Cinebench R23 (single) | 1,619Bottom 43% | 2,055+27%Top 18% |
| Cinebench R23 (multi) | 12,191Bottom 50% | 18,624+53%Top 20% |
| PassMark | 23,390Top 40% | 30,782+32%Top 21% |
| 3DMark Time Spy Graphics (iGPU) | 2,659Top 22% | 3,719+40%Top 7% |
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