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Gaming Performance Comparison

Recommended System Requirements
Game Radeon R7 240 Asus Low Profile OC 4GB Edition GeForce GT 640 v3 Zotac 2GB Edition
Halo: Reach 159% 100%
Cyberpunk 2077 1020% 765%
Red Dead Redemption 2 715% 529%
Dragon Ball Z Kakarot 403% 288%
Call of Duty: Modern Warfare 715% 529%
Doom Eternal 601% 441%
Microsoft Flight Simulator 1020% 765%
Grand Theft Auto VI 1145% 862%
FIFA 20 334% 235%
Need For Speed Heat 715% 529%

In terms of overall gaming performance, the graphical capabilities of the Nvidia GeForce GT 640 v3 Zotac 2GB Edition are noticeably better than the AMD Radeon R7 240 Asus Low Profile OC 4GB Edition.

The GT 640 has a 276 MHz higher core clock speed but 4 fewer Texture Mapping Units than the R7 240. The lower TMU count doesn't matter, though, as altogether the GT 640 manages to provide 1.3 GTexel/s better texturing performance. This still holds weight but shader performance is generally more relevant, particularly since both of these GPUs support at least DirectX 10.

The GT 640 has a 276 MHz higher core clock speed than the R7 240 and the same number of Render Output Units. This results in the GT 640 providing 2.2 GPixel/s better pixeling performance. However, both GPUs support DirectX 9 or above, and pixeling performance is only really relevant when comparing older cards.

The R7 240 was released less than a year after the GT 640, and so they are likely to have similar driver support for optimizing performance when running the latest games.

The R7 240 has 2048 MB more video memory than the GT 640, so is likely to be much better at displaying game textures at higher resolutions. However, overall, the GT 640 has superior memory performance.

The GT 640 has 11.3 GB/sec greater memory bandwidth than the R7 240, which means that the memory performance of the GT 640 is slightly better than the R7 240.

The Radeon R7 240 Asus Low Profile OC 4GB Edition has 320 Shader Processing Units and the GeForce GT 640 v3 Zotac 2GB Edition has 384. However, the actual shader performance of the R7 240 is 223 and the actual shader performance of the GT 640 is 402. The GT 640 having 179 better shader performance and an altogether better performance when taking into account other relevant data means that the GT 640 delivers a slightly smoother and more efficient experience when processing graphical data than the R7 240.

The Radeon R7 240 Asus Low Profile OC 4GB Edition requires 35 Watts to run and the GeForce GT 640 v3 Zotac 2GB Edition requires 49 Watts. We would recommend a PSU with at least 400 Watts for the R7 240 and a PSU with at least 350 Watts for the GT 640. The GT 640 requires 14 Watts more than the R7 240 to run. The difference is not significant enough for the GT 640 to have a noticeably larger impact on your yearly electricity bills than the R7 240.

Game FPS Benchmarks On Ultra

GPU Architecture

Core Speed770 MHzvs1046 MHz
Boost Clock820 MHzvs-
ArchitectureGCN 1.1 Oland PROKepler GK208-400-A1
OC Potential Fair vs Poor
Driver Support Great vs Good
Release Date08 Oct 2013vs29 May 2013
GPU LinkGD LinkGD Link

Resolution Performance

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GPU Memory

Memory4096 MBvs2048 MB
Memory Speed900 MHzvs1252 MHz
Memory Bus128 Bitvs64 Bit
Memory TypeDDR3vsGDDR5
Memory Bandwidth28.8GB/secvs40.1GB/sec
L2 Cache 512 KB green tick vs 128 KB
Delta Color Compression no vs no
Memory Performance 0% green tick vs green tick 0%

GPU Display

Shader Processing Units320vs384
Actual Shader Performance11%vs19%
Texture Mapping Units20vs16
Texture Rate15.4 GTexel/svs16.7 GTexel/s
Render Output Units8vs8
Pixel Rate6.2 GPixel/svs8.4 GPixel/s

GPU Outputs

Max Digital Resolution (WxH)4096x2160vs4096x2160
VGA Connections1vs1
DVI Connections1vs1
HDMI Connections1vs1
DisplayPort Connections0vs-

GPU Power Requirements

Max Power35 Wattsvs49 Watts
Recommended PSU400 Watts & 27 Ampsvs350 Watts & 26 Amps

GPU Features

Shader Model5.0vs5.0
Open GL4.4vs4.5
Open CL-vs-
Notebook GPUnono

GPU Supporting Hardware

Recommended ProcessorIntel Core i3-4130 3.4GHzvsIntel Core i3-3220 3.3GHz
Recommended RAM4 GBvs8 GB
Maximum Recommended Gaming Resolution1366x768vs1366x768

Gaming Performance Value

Performance Value

GPU Mini Review

Mini ReviewOverview
Radeon R7 240 Asus Low Profile OC 4GB Edition is a Special Edition of AMD's Middle-Class Radeon R7 240, created by Asus.

Overclock: Central Unit
The Central Unit was increased from 730MHz to 770MHz whereas the Boost Clock is now of 820MHz, instead of 780MHz.

Overclock: Memory Clock

Frame Buffer
The GPU can fill up a Memory Pool of up to 4GB. Under most circumstances, this only proves useful in certain 3D Games whose Settings Require Large Amounts of Memory. However, because the GPU itself is too weak to work under other circumstances in which 4GB of Memory are needed - such as 4K Gaming, a Large Frame Buffer is mostly a Gimmick.

Cooling Solution
Dust-Proof Fan: Unique fan design dissipates heat efficiently while extending a graphic cardís lifespan by 25%* through increased dust and particle resistance.

Benchmarks Indicate a 3% Performance Boost over the Reference Radeon R7 240.
GeForce GT 640 v3 Zotac 2GB Edition is a special edition of NVIDIA's Middle-Class GeForce GT 640 v3, created by Zotac.

Overclock: Central Unit
The Central Unit runs at the same speed.

Overclock: Memory Clock
The Operating Memory Clock and the Frame Buffer remain the same.

Cooling Solution
The Cooling System has been replaced by Zotac's Silent Cooling Solution.

Without Overclocking Out of The Box, GeForce GT 640 v3 Zotac 2GB Edition is as fast as the reference GeForce GT 640 v3.
Recommended CPU
Possible GPU Upgrades
GPU Variants