Core Ultra 7 251HX vs Core Ultra X9 388H: CPU comparison

Performance score

Core Ultra 7 251HX 2026 · 18/18 cores/threads

55.34 +5%

Core Ultra X9 388H 2026 · 16/16 cores/threads

52.46

Ryzen 5 7530U Core i5-12450H Core Ultra 7 258V Ryzen AI 9 HX 370 Core i9-14900HX

Core Ultra 7 251HX is 5% faster than Core Ultra X9 388H by our estimate.

The score is our own estimate from the specs (cores, threads, clocks, architecture generation), not a benchmark run. 100 = the fastest CPU in our database.

Overview

	Core Ultra 7 251HX	Core Ultra X9 388H
Score (0–100)	55.34	52.46
Ranking position	47	57
Type	Laptop	Laptop
Manufacturer	Intel	Intel
Architecture	Arrow Lake	Panther Lake
Release date	Q2 2026	Q1 2026

Specifications

	Core Ultra 7 251HX	Core Ultra X9 388H
Cores	18	16
Threads	18	16
P + E cores	6 + 12	4 + 12
Boost clock	5.1 GHz	5.1 GHz
L3 cache	30 MB	18 MB
Unlocked multiplier	no	no
Integrated graphics	no	Intel Arc B390 GPU
NPU (AI accelerator)	no	no

Pros and cons

Core Ultra 7 251HX

5% higher overall score
more cores: 18 vs 16
more threads: 18 vs 16
bigger L3 cache: 30 MB vs 18 MB

Core Ultra X9 388H

3% faster single core
has integrated graphics (Intel Arc B390 GPU)

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