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AMD

Ryzen 7 7840HS Specifications

BGA8 cores / 16 threads

Released April 30, 2023

One tier down from the 7940HS in AMD's Ryzen 7040 mobile lineup: the same eight Zen 4 cores, 16 threads and 16MB of L3 cache, with a 5.1GHz boost against that chip's 5.2GHz from a slightly lower 3.8GHz base. Radeon 780M graphics and the 35W-54W configurable TDP carry over unchanged, on the same 4nm Phoenix silicon. AMD's page does not state an exact launch date beyond the fourth quarter of 2023.

Tied 7th of 23 models in the Laptop CPU catalog on Boost clock — 6 models share this figure. Tied 12th of 23 models in the Laptop CPU catalog on L3 cache — 8 models share this figure.

Current best price

No tracked price — this page compares specifications alone.

Specifications

Cores
8
Threads
16
Socket
BGA
Boost clock
5.1 GHz
Base clock
3.8 GHz
L3 cache
16 MB
L2 cache
8 MB
TDP
35 W
Integrated graphics
Yes
Max power
54 W
Architecture
Zen 4 (Phoenix)
Process node
TSMC 4nm FinFET
Integrated GPU
AMD Radeon 780M
Memory support
DDR5

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 found it a very capable eight-core/16-thread Zen 4 laptop processor with performant Radeon 780M integrated graphics.
  • It ran well on Linux, and its higher 35-54W power envelope allowed more aggressive clocks than the 7840U variant.

Commonly criticised

  • At the time of review it lacked Ryzen AI support.

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.