CPULaptopReleased Feb 23, 2022

Intel Core i7-1255U Processor

10C/12T · 4.7 GHz · 15 W

The Intel Core i7-1255U is the mainstream 15 W Core i7 of the Alder Lake U-series, used in a wide range of thin-and-light laptops. It combines two performance-cores and eight efficient-cores with Iris Xe graphics (96 EU), while the Core i7-1265U adds vPro Enterprise and slightly higher clocks.

General

Manufacturer: Intel
Model: Intel Core i7-1255U Processor
Segment: Laptop
Generation: 12th Gen Core
Codename: Alder Lake
Architecture: x86_64
Microarchitecture: Alder Lake
Release date: Feb 23, 2022
Price: $426Search on Amazon

Cores & clocks

Cores / threads: 10 cores / 12 threadsP2+E8
Base clock: 1.70 GHz
Boost clock: 4.70 GHz
TDP (design W): 15 W
Max: 55 W
Unlocked: ✕ No
L2 cache: —
L3 cache: 12 MB
Technology (nm): Intel 7

Platform

Socket: FCBGA1744
2-CPU (multi-socket): ✕ No
Integrated GPU: Intel Iris Xe Graphics eligible
Clock: 1,250 MHz
Memory type: DDR5-4800, DDR4-3200, LPDDR5-5200, LPDDR4x-4267
2-channel
Memory size: Up to 64 GB
ECC memory: ✕ No
PCIe: PCIe 4.0 (CPU) / 3.0 (chipset), 20 lanes

Instructions & AI

Instruction extensions: Intel SSE4.1Intel SSE4.2Intel AVX2
NPU: None

OS support

Windows: Windows 10Windows 11 24H2Windows 11 25H2
ChromeOS: ChromeOS
Linux: UbuntuFedoraArch Linux
Notes: Covered by the Microsoft supported-processor lists for Windows 11 versions 24H2 and 25H2 under 12th Generation Intel Core processors; the 26H2 processor list has not been published. Windows 10 and the mainstream Linux distributions are supported, and ChromeOS Flex installs on generic x86-64 hardware. macOS is not supported.

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