Select any two GPUs for comparison
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Gaming Performance Comparison

Recommended System Requirements
Game GeForce GT 640 v3 Zotac 2GB Edition Radeon R7 240 Gigabyte OC 2GB Edition
Red Dead Redemption 2 529% 699%
Cyberpunk 2077 765% 998%
Dragon Ball Z Kakarot 288% 393%
Microsoft Flight Simulator 765% 998%
Call of Duty: Modern Warfare 529% 699%
Doom Eternal 441% 587%
FIFA 20 235% 326%
Grand Theft Auto VI 862% 1121%
Need For Speed Heat 529% 699%
Halo: Reach 100% 154%

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 Gigabyte OC 2GB Edition.

The GT 640 has a 266 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 1.1 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 266 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 GeForce GT 640 v3 Zotac 2GB Edition and the Radeon R7 240 Gigabyte OC 2GB Edition have the same amount of video memory, but are likely to provide slightly different experiences when displaying game textures at high resolutions.

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 GeForce GT 640 v3 Zotac 2GB Edition has 384 Shader Processing Units and the Radeon R7 240 Gigabyte OC 2GB Edition has 320. However, the actual shader performance of the GT 640 is 402 and the actual shader performance of the R7 240 is 245. The GT 640 having 157 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 GeForce GT 640 v3 Zotac 2GB Edition requires 49 Watts to run and the Radeon R7 240 Gigabyte OC 2GB Edition requires 30 Watts. We would recommend a PSU with at least 350 Watts for the GT 640 and a PSU with at least 400 Watts for the R7 240. The GT 640 requires 19 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 Speed1046 MHzvs780 MHz
Boost Clock-vs900 MHz
ArchitectureKepler GK208-400-A1GCN 1.1 Oland PRO
OC Potential Poor vs Poor
Driver Support Good vs Great
Release Date29 May 2013vs09 Oct 2013
GPU LinkGD LinkGD Link
Approved
Comparison

Resolution Performance

1366x768 - vs green tick
6.6
1600x900
5.2
green tick vs
5.1
1920x1080
3.9
green tick vs
3.2
2560x1440
2.6
green tick vs
2.3
3840x2160
1.8
green tick vs
1.5

GPU Memory

Memory2048 MBvs2048 MB
Memory Speed1252 MHzvs900 MHz
Memory Bus64 Bitvs128 Bit
Memory TypeGDDR5vsDDR3
Memory Bandwidth40.1GB/secvs28.8GB/sec
L2 Cache 128 KB vs green tick 512 KB
Delta Color Compression no vs no
Memory Performance 0% green tick vs green tick 0%
Comparison

GPU Display

Shader Processing Units384vs320
Actual Shader Performance19%vs12%
Technology28nmvs28nm
Texture Mapping Units16vs20
Texture Rate16.7 GTexel/svs15.6 GTexel/s
Render Output Units8vs8
Pixel Rate8.4 GPixel/svs6.2 GPixel/s
Comparison

GPU Outputs

Max Digital Resolution (WxH)4096x2160vs4096x2160
VGA Connections1vs1
DVI Connections1vs1
HDMI Connections1vs1
DisplayPort Connections-vs-
Comparison

GPU Power Requirements

Max Power49 Wattsvs30 Watts
Recommended PSU350 Watts & 26 Ampsvs400 Watts & 18 Amps

GPU Features

DirectX12.0vs12.0
Shader Model5.0vs5.0
Open GL4.5vs4.4
Open CL-vs-
Notebook GPUnono
SLI/Crossfirenovsno
Dedicatedyesvsyes
Comparison

GPU Supporting Hardware

Recommended ProcessorIntel Core i3-3220 3.3GHzvsIntel Core i3-4130 3.4GHz
Recommended RAM8 GBvs4 GB
Maximum Recommended Gaming Resolution1366x768vs1366x768

Gaming Performance Value

Performance Value

GPU Mini Review

Mini ReviewOverview
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.

Performance
Without Overclocking Out of The Box, GeForce GT 640 v3 Zotac 2GB Edition is as fast as the reference GeForce GT 640 v3.
Radeon R7 240 Gigabyte OC 2GB Edition is a special edition of the middle-class Radeon R7 240 2GB.
This edition comes with a special 10nm fan which will reduce the card's temperature and overclocked out of the box in the central unit that was increased from 730MHz to 780MHz, while the Boost clock is now of 900MHz.
Benchmarks indicate a 5% performance boost over the standard edition.
Recommended CPU
Possible GPU Upgrades
-
GPU Variants
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