CPULaptopReleased Dec 6, 2023

AMD Ryzen 5 8540U

6C/12T · 4.9 GHz · 15 W

The AMD Ryzen 5 8540U is a six-core, twelve-thread Ryzen 8040 laptop processor announced in December 2023, built on the hybrid Phoenix 2 die. It combines two full Zen 4 cores (3.7 GHz base, up to 4.9 GHz) with four compact Zen 4c cores (3.0 GHz base, up to 3.5 GHz), 16 MB of L3 cache and four-CU Radeon 740M graphics at 2.8 GHz. It has no Ryzen AI NPU, and its default TDP is 28 W, configurable from 15 to 30 W.

General

Manufacturer: AMD
Model: AMD Ryzen 5 8540U
Segment: Laptop
Generation: Ryzen 8040
Codename: Hawk Point (Phoenix 2 die)
Architecture: x86_64
Microarchitecture: Zen 4 + Zen 4c
Release date: Dec 6, 2023
Price: Search on Amazon

Cores & clocks

Cores / threads: 6 cores / 12 threadsP2+E4
Base clock: 3.20 GHz
Boost clock: 4.90 GHz
TDP (design W): 15 W
Max: 30 W
Unlocked: ✕ No
L2 cache: 6 MB
L3 cache: 16 MB
Technology (nm): 4 nm
TSMC N4

Platform

Socket: FP7, FP7r2
2-CPU (multi-socket): ✕ No
Integrated GPU: Radeon 740M
Clock: 2,800 MHz
Memory type: DDR5-5600, LPDDR5X-7500
2-channel
Memory size: Up to 96 GB
ECC memory: ✕ No
PCIe: PCIe 4.0 (14 lanes)

Instructions & AI

Instruction extensions: AESAMD-VAVXAVX2AVX-512FMA3SHASSE4.1SSE4.2SSE4ASSSE3
NPU: None

OS support

Windows: Windows 10Windows 11 24H2Windows 11 25H2Windows 11 26H2
ChromeOS: ChromeOS
Linux: UbuntuFedoraArch Linux
Notes: AMD lists Windows 11 64-bit, Windows 10 64-bit, RHEL and Ubuntu support. Microsoft's Windows 11 25H2 supported-processor list covers the whole Ryzen 8000 Series and 26H2 keeps the 25H2 requirements. Fedora and Arch Linux run on mainline kernels, and ChromeOS Flex installs on generic 64-bit x86 hardware.