Intel Core Ultra 9 275HX vs Intel Core Ultra X9 388H
74.5Single-core74.6
80.6Multi-core61.3
44.4Efficiencyspec-based81.4
60.5iGPU88.3
73.9Platformspec-based56.4
14 spec wins — Intel Core Ultra 9 275HX5 spec wins — Intel Core Ultra X9 388H
InnoReviews verdict
This one is close to a dead heat: Intel Core Ultra 9 275HX scores 70.6 against 69.6 for Intel Core Ultra X9 388H. Pick by the categories that matter to you — Intel Core Ultra 9 275HX edges ahead in multi-core, or by price.
Which would you pick?
Key differences
Reasons to pick the Intel Core Ultra 9 275HX
- Stronger multi-core score: 81 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
- 100% higher L3 cache: 36 MB vs 18 MB
Reasons to pick the Intel Core Ultra X9 388H
- Stronger iGPU score: 88 vs 61
- 250% higher 3DMark Time Spy Graphics (iGPU): 6,501 vs 1,855
- 55% lower Base TDP: 25 W vs 55 W
- 33% lower process: 2 nm vs 3 nm
General
| Spec | Intel Core Ultra 9 275HX | 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 9 275HX | Intel Core Ultra X9 388H |
|---|---|---|
| Cores | 24+50% | 16 |
| Performance cores | 8+100% | 4 |
| Efficiency cores | 16+33% | 12 |
| Threads | 24+50% | 16 |
| Base clock | 2.7 GHz+29% | 2.1 GHz |
| Boost clock | 5.4 GHz+6% | 5.1 GHz |
| L3 cache | 36 MB+100% | 18 MB |
Integrated GPU
| Spec | Intel Core Ultra 9 275HX | Intel Core Ultra X9 388H |
|---|---|---|
| iGPU | Intel Arc Graphics (4 Xe) | Intel Arc B390 |
| iGPU clock | 2,000 MHz | 2,500 MHz |
Memory
| Spec | Intel Core Ultra 9 275HX | Intel Core Ultra X9 388H |
|---|---|---|
| Memory support | DDR5-6400 | LPDDR5X |
| Max memory | 256 GB+167% | 96 GB |
Benchmarks
| Spec | Intel Core Ultra 9 275HX | Intel Core Ultra X9 388H |
|---|---|---|
| Geekbench 6 (single) | 3,042Top 15% | 3,038Top 16% |
| Geekbench 6 (multi) | 19,417+12%Top 11% | 17,395Top 13% |
| Cinebench R23 (single) | 2,194Top 5% | 2,201Top 4% |
| Cinebench R23 (multi) | 35,766+89%Top 5% | 18,911Top 20% |
| PassMark | 55,684+53%Top 5% | 36,409Top 15% |
| PassMark (single thread) | 4,701+9%Top 5% | 4,300Top 14% |
| 3DMark Time Spy Graphics (iGPU) | 1,855Top 44% | 6,501+250%Top 5% |
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