Home/Processors/Intel Core Ultra 7 255HX

Intel Laptop CPU

Intel Core Ultra 7 255HX

75A

Cores20
Threads20
Boost Clock5.2 GHz
TDP45-55 W (configurable)
SocketFCBGA-2114
Process3 nm

⇄ Compare with…

Benchmarks

Perf.77

iGPU51

Energy73

Cinebench 2024 Single-Core131

Cinebench 2024 Multi-Core1759

TDP45-55 W

Cache L330MB

Cinebench 2024 (Single)131

Cinebench 2024 (Multi)1759

Geekbench 6 (Single-Core)2888

Geekbench 6 (Multi-Core)18,042

Passmark CPU (Single-Core)4560

Passmark CPU (Multi-Core)48,115

Blender CPU391.12

iGPU FLOPS1.9 TFLOPS

Full specifications

GeekBench v6

File compression

1140 MB/sec

Clang compilation

149.8 Klines/sec

HTML 5 Browser

312.2 pages/sec

PDF Renderer

423.9 Mpixels/sec

Text processing

335.6 pages/sec

Background blur

64.1 images/sec

Photo processing

111.8 images/sec

Ray tracing

31.1 Mpixels/sec

PassMark

Integer math

127 GOps/sec

Floating point math

160.3 GOps/sec

Find prime numbers

400M Primes/sec

Random string sorting

62.4M Strings/sec

Data encryption

39.4 GBytes/sec

Data compression

513.6 MBytes/sec

Physics

2916 Frames/sec

Extended instructions

41.1B Matrices/sec

Performance Per Watt

Cinebench 2024 / Watt

32 PPW

Geekbench 6 Multi / Watt

328 PPW

Passmark CPU Mark / Watt

874.8 PPW

Blender / Watt

7.11 PPW

General

Vendor

Intel

Released

January 6, 2025

Type

Laptop

Instruction Set

x86-64

Codename

Arrow Lake

Model number

255HX

Integrated GPU

Arc Graphics (4-Cores)

AMD Equivalent

- AMD Ryzen AI Max Pro 380

CPU

P-Cores

P-Threads

Base Frequency (P)

2.4 GHz

Turbo Boost Frequency (P)

5.2 GHz

E-Cores

E-Threads

Base Frequency (E)

1.8 GHz

Turbo Boost Frequency (E)

4.5 GHz

Total Cores

Total Threads

Bus Frequency

100 MHz

Multiplier

24x

L1 Cache

192K (per core)

L2 Cache

2MB (per core)

L3 Cache

30MB (shared)

Unlocked Multiplier

Yes

Package

Fabrication Process

3 nm

TDP (PL1)

45-55 W (configurable)

Max. Boost TDP (PL2)

160 W

Socket

FCBGA-2114

Peak Temperature

105°C

iGPU

Integrated Graphics

Arc Graphics (4-Cores)

GPU Base Clock

300 MHz

GPU Boost Clock

1850 MHz

Shading Units

512

TMUs

ROPs

Execution Units

TGP

14 W

Memory Support

Memory Types

- DDR5-6400

Max. Memory Size

256 GB

Memory Channels

Max. Memory Bandwidth

102.4 GB/s

ECC Support

Yes

Misc

Official Site

Intel Core Ultra 7 255HX official page

PCI Express Version

5.0

PCI Express Lanes

Technologies

- Compute: ABM, ADX, AI Boost 3.0, AVX-VNNI, BMI1, BMI2, CLMUL, DLBoost 3.0, F16C, IPU 6.0, SHA - Performance: CFET, EIST, Speed Shift, TBMT 3.0, TBT 2.0, Thread Director - Virtualization: VT-d, VT-x, VT-x EPT - Security: MBEC, RDRAND, TDT, TXT, XD bit, vPro

Specifications compiled from NanoReview. Last updated 2026-09-29.