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Gaming Performance Comparison

Recommended System Requirements
Game GeForce 840M 2GB Mobility Radeon HD 5870
Cyberpunk 2077 559% 510%
Watch Dogs Legion 541% 494%
Assassins Creed: Valhalla 508% 463%
Call of Duty: Black Ops Cold War 488% 445%
FIFA 21 235% 211%
Genshin Impact 565% 516%
Microsoft Flight Simulator 488% 445%
eFootball PES 2021 235% 211%
Ghostrunner 488% 445%
Horizon: Zero Dawn 529% 483%

In terms of overall gaming performance, the graphical capabilities of the AMD Mobility Radeon HD 5870 are very slightly better than the Nvidia GeForce 840M 2GB.

The GeForce 840M 2GB has a 329 MHz higher core clock speed than the Radeon HD, but the Radeon HD has 16 more Texture Mapping Units than the GeForce 840M 2GB. As a result, the Radeon HD exhibits a 3.3 GTexel/s better Texture Fill Rate than the GeForce 840M 2GB. This still holds weight but shader performance is generally more relevant, particularly since both of these GPUs support at least DirectX 10.

The GeForce 840M 2GB has a 329 MHz higher core clock speed than the Radeon HD, but the Radeon HD has 8 more Render Output Units than the GeForce 840M 2GB. As a result, the Radeon HD exhibits a 3 GPixel/s better Pixel Fill Rate than the GeForce 840M 2GB. However, both GPUs support DirectX 9 or above, and pixeling performance is only really relevant when comparing older cards.

The GeForce 840M 2GB was released over three years more recently than the Radeon HD, and so the GeForce 840M 2GB is likely to have far better driver support, meaning it will be much more optimized and ultimately superior to the Radeon HD when running the latest games.

The GeForce 840M 2GB has 1024 MB more video memory than the Radeon HD, so is likely to be much better at displaying game textures at higher resolutions. However, overall, the Radeon HD has superior memory performance.

The Radeon HD has 48 GB/sec greater memory bandwidth than the GeForce 840M 2GB, which means that the memory performance of the Radeon HD is noticeably better than the GeForce 840M 2GB.

The GeForce 840M 2GB has 384 Shader Processing Units and the Mobility Radeon HD 5870 has 800. However, the actual shader performance of the GeForce 840M 2GB is 583 and the actual shader performance of the Radeon HD is 280. The GeForce 840M 2GB having 303 better shader performance is not particularly notable, as altogether the Radeon HD performs better when taking into account other relevant data.

The GeForce 840M 2GB transistor size technology is 12 nm (nanometers) smaller than the Radeon HD. This means that the GeForce 840M 2GB is expected to run slightly cooler and achieve higher clock frequencies than the Radeon HD. While they exhibit similar graphical performance, the GeForce 840M 2GB should consume less power than the Radeon HD.

The GeForce 840M 2GB requires 33 Watts to run and the Mobility Radeon HD 5870 requires 50 Watts. The Radeon HD requires 17 Watts more than the GeForce 840M 2GB to run. The difference is not significant enough for the Radeon HD to have a noticeably larger impact on your yearly electricity bills than the GeForce 840M 2GB.

Game FPS Benchmarks On Ultra

GPU Architecture

Core Speed1029 MHzvs700 MHz
Boost Clock1124 MHzvs-
ArchitectureMaxwell GM108Terascale 2 Broadway XT
OC Potential Poor vs Fair
Driver Support Great vs Poor
Release Date12 Mar 2014vs07 Jan 2010
GPU LinkGD LinkGD Link

Resolution Performance

green tick vs -
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GPU Memory

Memory2048 MBvs1024 MB
Memory Speed1001 MHzvs1000 MHz
Memory Bus64 Bitvs128 Bit
Memory TypeDDR3vsGDDR5
Memory Bandwidth16GB/secvs64GB/sec
L2 Cache 1024 KB green tick vs 256 KB
Delta Color Compression no vs no
Memory Performance 0% green tick vs green tick 0%

GPU Display

Shader Processing Units384vs800
Actual Shader Performance28%vs13%
Texture Mapping Units24vs40
Texture Rate24.7 GTexel/svs28 GTexel/s
Render Output Units8vs16
Pixel Rate8.2 GPixel/svs11.2 GPixel/s

GPU Outputs

Max Digital Resolution (WxH)4096x2160vs2560x1600
VGA Connections0vs0
DVI Connections0vs0
HDMI Connections0vs0
DisplayPort Connections-vs-

GPU Power Requirements

Max Power33 Wattsvs50 Watts
Recommended PSU--

GPU Features

Shader Model5.0vs5.0
Open GL4.5vs4.3
Open CL-vs-
Notebook GPUyesyes

GPU Supporting Hardware

Recommended ProcessorIntel Core i3-4100M 2.5GHzvsIntel Core i7-740QM 4-Core 1.73GHz
Recommended RAM4 GBvs6 GB
Maximum Recommended Gaming Resolution1366x768vs1600x900

Gaming Performance Value

Performance Value

GPU Mini Review

Mini ReviewOverview
GeForce 840M 2GB is a Middle-Class Mobile Graphics Card based on the First Revision of the Maxwell architecture.

The Maxwell architecture features many improvements and among them is the extremely large L2 Cache which allows NVIDIA to produce Graphics Cards with relatively small memory data transfer rates, without causing too much impact on the overall performance. Furthermore, the Shaders have been redesigned and are both more powerful and energy efficient.

It equips a GPU codenamed GM108 which has 3 SM activated and thus offers 384 Shader Processing Units, 24 TMUs and 8 ROPs. The central unit runs at 1029MHz and goes up to 1124MHz, in Turbo Mode.

The GPU accesses a 2GB frame buffer of DDR3, through a 64-bit memory interface. The Frame Buffer is exaggerated and in no way benefits the GPU. The memory clock operates at 1001MHz.

DirectX 11.2 Support (11.0 Hardware Default) and support for GPU Boost 2.0, GeForce Experience, PhysX and other technologies.

Power Consumption
With a rated board TDP of 33W, it will only be equipped in average sized notebooks.

Benchmarks indicate its performance is over 20% faster than the older GeForce GT 740M. Therefore, it should match GeForce GT 750M.

System Suggestions
We recommend a modest processor (Intel Core i5 Mobile) and 4GB of RAM for a notebook with GeForce 840M 2GB.
Mobility Radeon HD 5870 is a high-end GPU based on the 40nm, Terascale 2 architecture.
It's based on the Broadway XT Core and offers 800 Shader Processing Units, 40 TMUs and 16 ROPs, on 128-bit memory interface of fast GDDR5. The central unit runs at 700MHz and the memory clock operates at up to 1000MHz. It consumes no more than 50 Watt.
Benchmarks indicate most modern demanding games of 2007-2010, such as Crysis, BF2 and Metro 2033 were playable at high settings smoothly. Therefore, today's modern demanding games should be playable at least on the medium preset, using a 720p+ resolution.
Recommended CPU
Possible GPU Upgrades
GPU Variants