AMD · Radeon

AMD Radeon 840M

The AMD Radeon 840M is a integrated graphics processor, built on the RDNA 3.5 architecture using a 4 nm process. It has 256 shading units, a boost clock of 2.90 GHz and a 54 W board power rating. It scores 3,715 in the PassMark G3D benchmark. It supports DirectX 12, OpenGL 4.6 and Vulkan 1.4.

RDNA 3.54 nmIntegrated

6/10 key specs recorded · 16 facts

Depth: 29 recorded fields, 5 PassMark workloads

Specification data last verified July 27, 2026 against PassMark Videocard Benchmark and NanoReview (Firecrawl extract). Coverage: 6 of 10 tracked specifications recorded.

PassMark Videocard Benchmark NanoReview (Firecrawl extract)PassMark Videocard Benchmark

Shading units

256cores

4 compute units

Memory

n/a

System Shared

Boost clock

2.90 GHz

400 MHz base

Board power

54 W

Performance

The AMD Radeon 840M scores 3,715 in the PassMark G3D benchmark, higher than 76.1% of the 2,658 GPUs benchmarked (PassMark rank #679), measured across 1,033 submitted results. Its PassMark G2D score is 866.

PassMark G3D Mark

3,715

Rank #679
Faster than 76.1% of 2,658 GPUs
1,033 samples

0relative to the fastest GPU on record (41,928)

PassMark workload tests

DirectX 9 59 fps

reference: fastest recorded 526 fps · faster than 62.1% of 1,675 GPUs

DirectX 10 13 fps

reference: fastest recorded 231 fps · faster than 54.4% of 1,602 GPUs

DirectX 11 32 fps

reference: fastest recorded 362 fps · faster than 60.9% of 1,430 GPUs

DirectX 12 17 fps

reference: fastest recorded 213 fps · faster than 50.5% of 1,274 GPUs

GPU Compute 1,698 ops/s

reference: fastest recorded 26,591 ops/s · faster than 61.4% of 1,447 GPUs

Averages of PassMark PerformanceTest submissions; frames/sec are PassMark test-scene rates, not game FPS. Tests PassMark does not report for this card are omitted. PassMark listing

In the PassMark workload tests the AMD Radeon 840M averages DirectX 9 59 fps, DirectX 10 13 fps, DirectX 11 32 fps, DirectX 12 17 fps and GPU Compute 1,698 ops/s, across 1,033 submitted results. Frames per second are PassMark test-scene rates, not game frame rates.

Theoretical throughput

FP32 (single precision) 1.485 TFLOPS calculatedcalculated from shaders x boost clock (MHz) x 2 / 1e6 = 256 x 2900 x 2 / 1e6

Pixel fill rate 23.2 GPixel/s calculatedcalculated from ROPs x boost clock (MHz) / 1000 = 8 x 2900 / 1000

Texture fill rate 46.4 GTexel/s calculatedcalculated from TMUs x boost clock (MHz) / 1000 = 16 x 2900 / 1000

FP32 (single precision) (1.485 TFLOPS), Pixel fill rate (23.2 GPixel/s) and Texture fill rate (46.4 GTexel/s) are calculated by Feex from stored specifications, not stated by AMD.

As stated by PassMark

Category Mobile

First benchmarked 2025-04-02

Samples 1,033

PassMark listing (collected 2026-10-01)

Graphics processor

Architecture RDNA 3.5

Codename Not recorded

Chip Not recorded

Process node 4 nm

Transistors Not recorded

Die size Not recorded

The AMD Radeon 840M is based on the RDNA 3.5 architecture and is manufactured on a 4 nm process.

Shader configuration

Shading units 256

Compute units 4

Streaming multiprocessors Not recorded

Execution units Not recorded

Texture units (TMUs) 16

Render output units (ROPs) 8

Ray tracing cores Not recorded

Tensor / AI cores Not recorded

XMX engines Not recorded

Infinity cache Not recorded

The AMD Radeon 840M has 256 shading units, 4 compute units, 16 texture mapping units and 8 render output units.

The AMD Radeon 840M does not use XMX engines; those are specific to Intel Arc graphics. Feex has no recorded ray tracing core count for the AMD Radeon 840M.

Clock speeds

Base clock 400 MHz

Boost clock 2.90 GHz

Game clock Not recorded

Memory clock Not recorded

Effective memory clock Not recorded

The AMD Radeon 840M runs at a base clock of 400 MHz and boosts to 2.90 GHz.

Memory

Size Not recorded

Type System Shared

Bus width Not recorded

Bandwidth Not recorded

Board and power

The AMD Radeon 840M has a board power rating of 54 W.

Board power (TDP) 54 W

Total board power Not recorded

Suggested PSU Not recorded

Power connectors Not recorded

Slot width Not recorded

Length Not recorded

Width Not recorded

Height Not recorded

Cooler Not recorded

Max temperature Not recorded

Bus interface Not recorded

Market

Launched Not recorded

Launch price Not recorded

Status Not recorded

Form factor Not recorded

Segment Integrated

Series Radeon

Benchmarks

PassMark G3D 3,715

PassMark G2D 866

Rank #679

Samples 1,033

Graphics and compute APIs

The AMD Radeon 840M supports DirectX 12, OpenGL 4.6 and Vulkan 1.4.

DirectX 12

OpenGL 4.6

Vulkan 1.4

CUDA is an NVIDIA technology and does not apply to the AMD Radeon 840M. Feex has no recorded OpenCL version for the AMD Radeon 840M.

Naming and aliases

The AMD Radeon 840M is also known by other names: PassMark also lists it as AMD Radeon(TM) 840M Graphics.

Other names (PassMark) AMD Radeon(TM) 840M Graphics

Frequently asked questions

How much power does the AMD Radeon 840M use and what power supply does it need?

The AMD Radeon 840M has a board power rating of 54 W.

How fast is the AMD Radeon 840M?

The AMD Radeon 840M scores 3,715 in the PassMark G3D benchmark, higher than 76.1% of the 2,658 GPUs benchmarked. Its PassMark rank is #679. In the PassMark DirectX 12 test it averages 17 fps.