CPULaptopReleased 2019

Intel Core i5-8257U

4C/8T · 3.9 GHz · 15 W

The Core i5-8257U is a quad-core 15 W laptop processor from Intel's 8th Generation Coffee Lake-U family, released in the third quarter of 2019. It combines four Hyper-Threaded cores with Intel Iris Plus Graphics 645 and 128 MB of on-package eDRAM that serves as a cache for the integrated GPU. Apple used it in the 13-inch MacBook Pro with two Thunderbolt 3 ports introduced in July 2019, where it was the standard processor and the Core i7-8557U was the upgrade option.

General

Manufacturer: Intel
Model: Intel Core i5-8257U
Segment: Laptop
Generation: 8th Gen Core
Codename: Coffee Lake-U
Architecture: x86_64
Microarchitecture: Coffee Lake
Release date: 2019
Price: Search on Amazon

Cores & clocks

Cores / threads: 4 cores / 8 threads
Base clock: 1.40 GHz
Boost clock: 3.90 GHz
TDP (design W): 15 W
Unlocked: ✕ No
L2 cache: 1 MB
L3 cache: 6 MB
Technology (nm): 14 nm
14 nm

Platform

Socket: FCBGA1528
2-CPU (multi-socket): ✕ No
Integrated GPU: Intel Iris Plus Graphics 645
Clock: 1,050 MHz
Memory type: DDR4-2400, LPDDR3-2133
2-channel
Memory size: Up to 32 GB
ECC memory: ✕ No
PCIe: PCIe 3.0 (16 lanes)

Instructions & AI

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

OS support

Windows: Windows 10Windows 11 24H2Windows 11 25H2Windows 11 26H2
ChromeOS: ChromeOS
Linux: UbuntuFedoraArch Linux
Notes: Microsoft lists the 8th Generation Intel Core i5 series on the Windows 11 24H2 and 25H2 supported-processor lists; 26H2 keeps the 25H2 requirements. Windows 10 and mainstream x86-64 Linux distributions are supported, and ChromeOS Flex installs on generic x86-64 hardware.