Intel Core Ultra 7 255H vs Intel Core Ultra X9 388H
69.7Single-core74.6
56.8Multi-core61.3
75.7Efficiencyspec-based81.4
75.9iGPU88.3
60.5Platformspec-based56.4
4 spec wins — Intel Core Ultra 7 255H11 spec wins — Intel Core Ultra X9 388H
InnoReviews verdict
Intel Core Ultra X9 388H wins this laptop processor face-off, 69.6 to 65.3, pulling ahead mainly in iGPU (+12) and single-core (+5). Intel Core Ultra 7 255H still makes sense if its price or standout specs fit your needs better.
Which would you pick?
Key differences
Reasons to pick the Intel Core Ultra 7 255H
- 50% higher Performance cores: 6 vs 4
- 44% higher Max TDP: 115 W vs 80 W
- 33% higher L3 cache: 24 MB vs 18 MB
- 33% higher Max memory: 128 GB vs 96 GB
Reasons to pick the Intel Core Ultra X9 388H
- Stronger single-core score: 75 vs 70
- Stronger multi-core score: 61 vs 57
- Stronger iGPU score: 88 vs 76
- 75% higher 3DMark Time Spy Graphics (iGPU): 6,501 vs 3,719
- 33% lower process: 2 nm vs 3 nm
General
| Spec | Intel Core Ultra 7 255H | Intel Core Ultra X9 388H |
|---|---|---|
| Announced | 2025 | 2026 |
| Process | 3 nm | 2 nm+33% |
| Base TDP | 28 W | 25 W+11% |
| Max TDP | 115 W+44% | 80 W |
Cores & Clocks
| Spec | Intel Core Ultra 7 255H | Intel Core Ultra X9 388H |
|---|---|---|
| Cores | 16 | 16 |
| Performance cores | 6+50% | 4 |
| Efficiency cores | 10 | 12+20% |
| Threads | 16 | 16 |
| Base clock | 2 GHz | 2.1 GHz+5% |
| Boost clock | 5.1 GHz | 5.1 GHz |
| L3 cache | 24 MB+33% | 18 MB |
Integrated GPU
| Spec | Intel Core Ultra 7 255H | Intel Core Ultra X9 388H |
|---|---|---|
| iGPU | Intel Arc 140T | Intel Arc B390 |
| iGPU clock | 2,250 MHz | 2,500 MHz |
Memory
| Spec | Intel Core Ultra 7 255H | Intel Core Ultra X9 388H |
|---|---|---|
| Memory support | LPDDR5X-8400 / DDR5-6400 | LPDDR5X |
| Max memory | 128 GB+33% | 96 GB |
Benchmarks
| Spec | Intel Core Ultra 7 255H | Intel Core Ultra X9 388H |
|---|---|---|
| Geekbench 6 (single) | 2,851Top 29% | 3,038+7%Top 19% |
| Geekbench 6 (multi) | 15,362Top 23% | 17,395+13%Top 16% |
| Cinebench R23 (single) | 2,055Top 18% | 2,201+7%Top 7% |
| Cinebench R23 (multi) | 18,624Top 20% | 18,911+2%Top 19% |
| PassMark | 30,782Top 21% | 36,409+18%Top 16% |
| 3DMark Time Spy Graphics (iGPU) | 3,719Top 7% | 6,501+75%Top 3% |
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