Intel Core Ultra 7 255HX vs Intel Core Ultra X9 388H
72.8Single-core74.6
73.8Multi-core61.3
44.4Efficiencyspec-based81.4
—iGPU88.3
69.6Platformspec-based56.4
11 spec wins — Intel Core Ultra 7 255HX5 spec wins — Intel Core Ultra X9 388H
InnoReviews verdict
Intel Core Ultra X9 388H wins this laptop processor face-off, 69.6 to 67.9, pulling ahead mainly in single-core (+2). Intel Core Ultra 7 255HX 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 255HX
- Stronger multi-core score: 74 vs 61
- 167% higher Max memory: 256 GB vs 96 GB
- 100% higher Max TDP: 160 W vs 80 W
- 100% higher Performance cores: 8 vs 4
- 68% higher Cinebench R23 (multi): 31,781 vs 18,911
Reasons to pick the Intel Core Ultra X9 388H
- 55% lower Base TDP: 25 W vs 55 W
- 33% lower process: 2 nm vs 3 nm
General
| Spec | Intel Core Ultra 7 255HX | Intel Core Ultra X9 388H |
|---|---|---|
| Announced | 2025 | 2026 |
| Process | 3 nm | 2 nm+33% |
| Base TDP | 55 W | 25 W+55% |
| Max TDP | 160 W+100% | 80 W |
Cores & Clocks
| Spec | Intel Core Ultra 7 255HX | Intel Core Ultra X9 388H |
|---|---|---|
| Cores | 20+25% | 16 |
| Performance cores | 8+100% | 4 |
| Efficiency cores | 12 | 12 |
| Threads | 20+25% | 16 |
| Base clock | 2.4 GHz+14% | 2.1 GHz |
| Boost clock | 5.2 GHz+2% | 5.1 GHz |
| L3 cache | 30 MB+67% | 18 MB |
Integrated GPU
| Spec | Intel Core Ultra 7 255HX | Intel Core Ultra X9 388H |
|---|---|---|
| iGPU | Intel Graphics (4 Xe-cores) | Intel Arc B390 |
| iGPU clock | 1,850 MHz | 2,500 MHz |
Memory
| Spec | Intel Core Ultra 7 255HX | Intel Core Ultra X9 388H |
|---|---|---|
| Memory support | DDR5-6400 | LPDDR5X |
| Max memory | 256 GB+167% | 96 GB |
Benchmarks
| Spec | Intel Core Ultra 7 255HX | Intel Core Ultra X9 388H |
|---|---|---|
| Geekbench 6 (single) | 2,959Top 17% | 3,038+3%Top 15% |
| Geekbench 6 (multi) | 17,915+3%Top 12% | 17,395Top 13% |
| Cinebench R23 (single) | 2,154Top 10% | 2,201+2%Top 6% |
| Cinebench R23 (multi) | 31,781+68%Top 6% | 18,911Top 19% |
| PassMark | 47,933+32%Top 8% | 36,409Top 15% |
| 3DMark Time Spy Graphics (iGPU) | — | 6,501Top 3% |
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