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Laptop

Intel Core Ultra 7 255HX

Multicore performance
48,144
Single-core performance
4,560
Estimated price
Not listed
Processor specifications
Normalized fields from the source detail page.
Class
Laptop
Socket
FCBGA2114
Base clock
2.4 GHz
Turbo clock
5.2 GHz
Cores
20
Threads
20
Typical TDP
55 W
Release / first seen
Q2 2025
Cache per CPU package
Source values are kept verbatim to preserve package multipliers.
L1 Instruction Cache
8 x 64 KB
L1 Data Cache
8 x 48 KB
L2 Cache
8 x 3072 KB
L3 Cache
30 MB
Eff. L1 Instruction Cache
12 x 64 KB
Eff. L1 Data Cache
12 x 32 KB
Eff. L2 Cache
3 x 4096 KB
Additional source specifications
Variant-specific fields are stored alongside the normalized schema.
Description
Intel Graphics, Intel AI Boost
Total Cores
20 Cores, 20 Threads
Performance Cores
8 Cores, 8 Threads, 2.4 GHz Base, 5.2 GHz Turbo
Efficient Cores
12 Cores, 12 Threads, 1.8 GHz Base, 4.5 GHz Turbo
TDP Down
45 W
TDP Up
160 W
Memory Support
Max. Memory Size: 256 GB (Up to DDR5 6400 MT/s)