Intel Core Ultra X9 378H vs Intel Core Ultra X9 388H processor comparison: performance score, cores and clock speeds, cache, TDP, integrated graphics and NPU. The better value in each row is highlighted in green.
Summary
Intel Core Ultra X9 388H offers a higher clock speed (5.1 GHz vs 5.0 GHz).
Performance score
0
Coming soon
0
Coming soon
Key specs
Cores & Threads16/16
Cores & Threads16/16
Turbo5.0 GHz
Turbo5.1 GHz
L3 cache18 MB
L3 cache18 MB
TDP25 W
TDP25 W
iGPUIntel Arc B390
iGPUIntel Arc B390
General
SeriesSeries 3
SeriesSeries 3
CodenamePanther Lake
CodenamePanther Lake
CPU architectureCougar Cove, Darkmont
CPU architectureCougar Cove, Darkmont
FoundryIntel
FoundryIntel
Process nodeIntel 18A (1.8 nm)
Process nodeIntel 18A (1.8 nm)
Instruction setx86-64
Instruction setx86-64
Release dateApril 5, 2026
Release dateJanuary 5, 2026
Cores and clocks
Cores & Threads16/16
Cores & Threads16/16
4× P-cores
- Turbo clock
- 5.0 GHz
- Base clock
- 2.0 GHz
4× P-cores
- Turbo clock
- 5.1 GHz
- Base clock
- 2.1 GHz
8× E-cores
- Turbo clock
- 3.8 GHz
- Base clock
- 1.6 GHz
8× E-cores
- Turbo clock
- 3.8 GHz
- Base clock
- 1.6 GHz
4× LPE-cores
- Turbo clock
- 3.6 GHz
- Base clock
- 1.6 GHz
4× LPE-cores
- Turbo clock
- 3.7 GHz
- Base clock
- 1.6 GHz
Cache
L3 cache18 MB
L3 cache18 MB
L2 cache24 MB
L2 cache24 MB
L1 cache2176 KB
L1 cache2176 KB
TDP
TDP25 W
TDP25 W
Min. - Max.15 - 80 W
Min. - Max.15 - 80 W
Max temperature100 °C
Max temperature100 °C
Connectivity
Memory supportLPDDR5x-9600
Memory supportLPDDR5x-9600
Memory channels2
Memory channels2
PCIe version5.0, 4.0
PCIe version5.0, 4.0
PCIe lanes4, 8
PCIe lanes4, 8
Graphics
ModelIntel Arc B390
ModelIntel Arc B390
iGPU architectureXe3
iGPU architectureXe3
Execution units12
Execution units12
Clock2500 MHz
Clock2500 MHz
AI
Total TOPS172
Total TOPS172
NPU TOPS50
NPU TOPS50
iGPU TOPS122
iGPU TOPS122