Intel Core Ultra 5 338H vs Intel Core Ultra X9 378H
69.4Single-core57.1
53.4Multi-core60.7
81.4Efficiencyspec-based81.4
86.7iGPU88.7
53.4Platformspec-based56.4
1 spec wins — Intel Core Ultra 5 338H8 spec wins — Intel Core Ultra X9 378H
InnoReviews verdict
This one is close to a dead heat: Intel Core Ultra 5 338H scores 64.9 against 65.1 for Intel Core Ultra X9 378H. Pick by the categories that matter to you — Intel Core Ultra X9 378H edges ahead in multi-core and iGPU, or by price.
Which would you pick?
Key differences
Reasons to pick the Intel Core Ultra 5 338H
- Stronger single-core score: 69 vs 57
Reasons to pick the Intel Core Ultra X9 378H
- Stronger multi-core score: 61 vs 53
- 50% higher Efficiency cores: 12 vs 8
- 33% higher cores: 16 vs 12
- 33% higher threads: 16 vs 12
- 23% higher Max TDP: 80 W vs 65 W
General
| Spec | Intel Core Ultra 5 338H | Intel Core Ultra X9 378H |
|---|---|---|
| Announced | 2026 | 2026 |
| Process | 2 nm | 2 nm |
| Base TDP | 25 W | 25 W |
| Max TDP | 65 W | 80 W+23% |
Cores & Clocks
| Spec | Intel Core Ultra 5 338H | Intel Core Ultra X9 378H |
|---|---|---|
| Cores | 12 | 16+33% |
| Performance cores | 4 | 4 |
| Efficiency cores | 8 | 12+50% |
| Threads | 12 | 16+33% |
| Base clock | 1.9 GHz | 2 GHz+5% |
| Boost clock | 4.7 GHz | 5 GHz+6% |
| L3 cache | 18 MB | 18 MB |
Integrated GPU
| Spec | Intel Core Ultra 5 338H | Intel Core Ultra X9 378H |
|---|---|---|
| iGPU | Intel Arc B370 | Intel Arc B390 |
| iGPU clock | 2,400 MHz | 2,500 MHz |
Memory
| Spec | Intel Core Ultra 5 338H | Intel Core Ultra X9 378H |
|---|---|---|
| Memory support | LPDDR5X-8533 | LPDDR5X-9600 |
| Max memory | 96 GB | 96 GB |
Benchmarks
| Spec | Intel Core Ultra 5 338H | Intel Core Ultra X9 378H |
|---|---|---|
| Geekbench 6 (single) | 2,840Top 25% | — |
| Geekbench 6 (multi) | 14,499Top 25% | — |
| Cinebench R23 (single) | 2,044Top 14% | — |
| Cinebench R23 (multi) | 16,331Top 37% | — |
| PassMark | 27,989Top 32% | 33,002+18%Top 22% |
| PassMark (single thread) | 4,026+6%Top 22% | 3,799Top 40% |
| 3DMark Time Spy Graphics (iGPU) | 6,050Top 6% | 6,627+10%Top 4% |
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