Select any two GPUs for comparison
VS

Gaming Performance Comparison

Recommended System Requirements
Game GeForce 840M 2GB Radeon HD 8450G
Halo: Reach 100% 539%
Cyberpunk 2077 765% 2663%
Red Dead Redemption 2 529% 1911%
Dragon Ball Z Kakarot 288% 1141%
Call of Duty: Modern Warfare 529% 1911%
Microsoft Flight Simulator 765% 2663%
Doom Eternal 441% 1629%
Grand Theft Auto VI 862% 2973%
FIFA 20 235% 971%
Need For Speed Heat 529% 1911%

In terms of overall gaming performance, the graphical capabilities of the Nvidia GeForce 840M 2GB are massively better than the AMD Radeon HD 8450G.

The GeForce 840M 2GB was released less than a year after the Radeon HD 8450G, and so they are likely to have similar driver support for optimizing performance when running the latest games.

The GeForce 840M 2GB has 2048 MB video memory, but the Radeon HD 8450G does not have an entry, so the two GPUs cannot be reliably compared in this area.

The GeForce 840M 2GB has 384 Shader Processing Units and the Radeon HD 8450G has 192. However, the actual shader performance of the GeForce 840M 2GB is 583 and the actual shader performance of the Radeon HD 8450G is 102. The GeForce 840M 2GB having 481 better shader performance and an altogether better performance when taking into account other relevant data means that the GeForce 840M 2GB delivers a noticeably smoother and more efficient experience when processing graphical data than the Radeon HD 8450G.

The GeForce 840M 2GB requires 33 Watts to run and the Radeon HD 8450G requires 35 Watts. The Radeon HD 8450G requires 2 Watts more than the GeForce 840M 2GB to run. The difference is not significant enough for the Radeon HD 8450G 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 MHzvs533 MHz
Boost Clock1124 MHzvs-
ArchitectureMaxwell GM108Terascale 3
OC Potential Poor vs -
Driver Support Great vs -
Release Date12 Mar 2014vs12 Mar 2013
GPU LinkGD LinkGD Link
Approved
Comparison

Resolution Performance

1366x768
7
green tick vs -
1600x900
5.4
green tick vs -
1920x1080
3.9
green tick vs -
2560x1440
2.6
green tick vs -
3840x2160
1.7
green tick vs -

GPU Memory

Memory2048 MBvsN/A
Memory Speed1001 MHzvs800 MHz
Memory Bus64 Bitvs128 Bit
Memory TypeDDR3vsDDR3
Memory Bandwidth16GB/secvs25.6GB/sec
L2 Cache 1024 KB green tick vs -
Delta Color Compression no vs no
Memory Performance 0% green tick vs green tick 0%
Comparison

GPU Display

Shader Processing Units384vs192
Actual Shader Performance28%vs5%
Technology28nmvs-
Texture Mapping Units24vs-
Texture Rate24.7 GTexel/svs-
Render Output Units8vs-
Pixel Rate8.2 GPixel/svs-
Comparison

GPU Outputs

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

GPU Power Requirements

Max Power33 Wattsvs35 Watts
Recommended PSU--

GPU Features

DirectX12.0vs11.1
Shader Model5.0vs5.0
Open GL4.5vs4.2
Open CL-vs-
Notebook GPUyesyes
SLI/Crossfirenovsno
Dedicatedyesvsno
Comparison

GPU Supporting Hardware

Recommended ProcessorIntel Core i3-4100M 2.5GHz-
Recommended RAM4 GB-
Maximum Recommended Gaming Resolution1366x768-

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.

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.

GPU
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.

Memory
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.

Features
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.

Performance
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.
Radeon HD 8450G is an integrated mobile GPU, first seen on the APU A6-5350M, based on the 32nm, Terascale 3 architecture.
It offer 192 Shader Processing Units, 12 TMUs and 4 ROPs, on a DDR3 memory interface of either a 128-bit bus width, if the laptop system RAM's is dual-channelled, or a 64-bit bus width, if not. The central units runs at 533MHz and goes up to 720MHz, in Turbo Mode. The memory clock can operate up to 800MHz, as the max memory supported by the CPU is DDR3-1600.
Its performance depends somewhat on whether or not the memory is dual-channelled. Benchmarks put its performance on level with today's entry-level dedicated GPUs such as GeForce GT 610M or Radeon HD 7470M. Therefore, modern some demanding games can be played with medium detail but most will require further reduced settings.
Recommended CPU
-
Possible GPU Upgrades
N/A
N/A
GPU Variants
-
-

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