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Intel

Core Ultra 7 255H Specifications

BGA16 cores / 16 threads

Intel's third-tier Arrow Lake-H part: the same 16 cores as the 265H above it — six Performance, eight Efficient, two Low Power Efficient — and 16 threads, but boost tops out at 5.1GHz against that chip's 5.3GHz, from a lower 2GHz Performance-core base. Cache holds at 24MB and base power at 28W, with maximum turbo power unchanged at 115W. Arc 140T graphics complete the package.

Tied 7th of 23 models in the Laptop CPU catalog on Boost clock — 6 models share this figure. Tied 3rd of 23 models in the Laptop CPU catalog on L3 cache — 6 models share this figure.

Current best price

No tracked price — this page compares specifications alone.

Specifications

Cores
16
Threads
16
Socket
BGA
Boost clock
5.1 GHz
Base clock
2 GHz
Performance cores
6
Efficiency cores
10
L3 cache
24 MB
TDP
28 W
Integrated graphics
Yes
Max power
115 W
Architecture
Arrow Lake
Process node
TSMC N3B
Integrated GPU
Intel Arc 140T
Memory support
LPDDR5/X-8400, DDR5-6400
PCIe generation
5
PCIe lanes
28

Guides for this category

How to choose a desktop CPUA chip's socket decides what it can go into; cores, cache and TDP decide what you actually get once it's installed.How many CPU cores you actually needWhy more cores is not more speed, how gaming and productivity ask for cores differently, and why a core count alone never ranks two chips.When a CPU price is actually goodWhy a chip's list price and discount percentage tell you little, what a processor's price does over its life, and how to read its tracked history.Laptop CPU vs desktop CPUA mobile chip with the same core count is not the same processor — what the power envelope changes, and why these parts carry no price.

What owners and reviewers say

Summarised from 1 source(s), reviewed September 14, 2026. A source is counted only where it names this model exactly. How we track prices

Commonly praised

  • Reviewers benchmark it across a broad suite of browser, creator, compilation, encoding and AI workloads, finding it a capable sixteen-core Arrow Lake-H part.
  • It works out of the box on current Linux distributions and is examined specifically for power consumption and performance per watt as well as raw speed.

Commonly criticised

  • Its measured results vary with the host laptop's power profile, so reviewers present both balanced and full-performance configurations rather than one figure.

Sources behind this summary

Sources

Every spec above was pulled from one of these — a field a source didn't state was left off rather than estimated.