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Intel Core Ultra 7 366H vs Intel Core Ultra X9 388H: Comparison
Core Ultra 7 366H vs Core Ultra X9 388H: the p-core boost clock difference
The first real difference is p-core boost clock: Core Ultra 7 366H 4.8 GHz against Core Ultra X9 388H 5.1 GHz. They differ on p-core base clock too, 2.0 GHz on the Core Ultra 7 366H versus 2.1 GHz on the Core Ultra X9 388H. Product line is not the same on both, Core Ultra 7 on the Core Ultra 7 366H versus Core Ultra X9 on the Core Ultra X9 388H. There is a split on igpu as well, Intel Arc on the Core Ultra 7 366H versus Intel Arc B390 on the Core Ultra X9 388H. Memory type is not the same on both, DDR5, LPDDR5x on the Core Ultra 7 366H versus LPDDR5x on the Core Ultra X9 388H.
Core Ultra 7 366H vs Core Ultra X9 388H: which one fits your build
Take the Core Ultra 7 366H for gaming and creator laptops that pair 16 cores with a discrete GPU, using 20 PCIe lanes. It is equally the pick for buyers wanting a 4.8 GHz boost clock and a 50 TOPS NPU in the 16-core H tier. Avoid it for thin laptops depending on integrated graphics, because it has a smaller 4 Xe3-core iGPU. The Core Ultra X9 388H suits thin laptops needing 12 Xe3-core Arc B390 graphics. The same goes for users wanting a boost clock up to 5.1 GHz, 16 cores and a 50 TOPS NPU. It is the wrong buy for laptops needing DDR5 SO-DIMM slots, since this chip is listed for LPDDR5x.
What Core Ultra 7 366H and Core Ultra X9 388H have in common
Where they agree, they agree completely, total cores, performance cores, efficiency cores, low power efficiency cores and total threads included, so the decision does not turn on any of those. They match on 13 further specifications as well.
Frequently asked questions
Is the E-Core Base Clock the same on the Core Ultra 7 366H and Core Ultra X9 388H?
It is. Both are listed at 1.6 GHz, so it is not a reason to pick one over the other.
Specs and benchmarks
Brand
- Intel Core Ultra 7 366H
- Intel
- Intel Core Ultra X9 388H
- Intel
Product Line
- Intel Core Ultra 7 366H
- Core Ultra 7
- Intel Core Ultra X9 388H
- Core Ultra X9
Form Factor
- Intel Core Ultra 7 366H
- Laptop
- Intel Core Ultra X9 388H
- Laptop
Model Number
- Intel Core Ultra 7 366H
- 366H
- Intel Core Ultra X9 388H
- 388H
Codename
- Intel Core Ultra 7 366H
- Panther Lake
- Intel Core Ultra X9 388H
- Panther Lake
Release Year
- Intel Core Ultra 7 366H
- 2026
- Intel Core Ultra X9 388H
- 2026
TDP
- Intel Core Ultra 7 366H
- 25 W
- Intel Core Ultra X9 388H
- 25 W
iGPU
- Intel Core Ultra 7 366H
- Intel Arc (4 Xe3-cores)
- Intel Core Ultra X9 388H
- Intel Arc B390 (12 Xe3-cores)
Market Segment
- Intel Core Ultra 7 366H
- Laptop
- Intel Core Ultra X9 388H
- Laptop
Microarchitecture
- Intel Core Ultra 7 366H
- Panther Lake, Intel Core Ultra Series 3
- Intel Core Ultra X9 388H
- Panther Lake, Intel Core Ultra Series 3
Socket
- Intel Core Ultra 7 366H
- FCBGA2540
- Intel Core Ultra X9 388H
- FCBGA2540
Process Node
- Intel Core Ultra 7 366H
- 18 nm
- Intel Core Ultra X9 388H
- 18 nm
Total Cores
- Intel Core Ultra 7 366H
- 16
- Intel Core Ultra X9 388H
- 16
Performance Cores
- Intel Core Ultra 7 366H
- 4
- Intel Core Ultra X9 388H
- 4
Efficiency Cores
- Intel Core Ultra 7 366H
- 8
- Intel Core Ultra X9 388H
- 8
Total Threads
- Intel Core Ultra 7 366H
- 16
- Intel Core Ultra X9 388H
- 16
SMT Enabled
- Intel Core Ultra 7 366H
- No
- Intel Core Ultra X9 388H
- No
P-Core Base Clock
- Intel Core Ultra 7 366H
- 2.0 GHz
- Intel Core Ultra X9 388H
- 2.1 GHz
P-Core Boost Clock
- Intel Core Ultra 7 366H
- 4.8 GHz
- Intel Core Ultra X9 388H
- 5.1 GHz
E-Core Base Clock
- Intel Core Ultra 7 366H
- 1.6 GHz
- Intel Core Ultra X9 388H
- 1.6 GHz
L3 Cache
- Intel Core Ultra 7 366H
- 18 MB
- Intel Core Ultra X9 388H
- 18 MB
Base Power
- Intel Core Ultra 7 366H
- 25 W
- Intel Core Ultra X9 388H
- 25 W
Max Turbo Power
- Intel Core Ultra 7 366H
- 80 W
- Intel Core Ultra X9 388H
- 80 W
Memory Type
- Intel Core Ultra 7 366H
- DDR5, LPDDR5x
- Intel Core Ultra X9 388H
- LPDDR5x
Integrated Graphics
- Intel Core Ultra 7 366H
- Yes
- Intel Core Ultra X9 388H
- Yes
NPU Peak TOPS
- Intel Core Ultra 7 366H
- 50 TOPS (NPU 5)
- Intel Core Ultra X9 388H
- 50 TOPS (NPU 5)
Low Power Efficiency Cores
- Intel Core Ultra 7 366H
- 4
- Intel Core Ultra X9 388H
- 4
Which one should you pick?
Choose 366H if you want the higher L3 cache (18 MB vs 18 MB).
Choose 388H if you already have it on hand or find it at a lower price.