Select any two GPUs for comparison

Gaming Performance Comparison

Recommended System Requirements
Game Radeon HD 7730 v2 XFX Core 4GB Edition GeForce GT 640 v3 Zotac 2GB Edition
Red Dead Redemption 2 723% 529%
Cyberpunk 2077 1031% 765%
Doom Eternal 608% 441%
Call of Duty: Modern Warfare 723% 529%
Dragon Ball Z Kakarot 408% 288%
Halo: Reach 162% 100%
Microsoft Flight Simulator 1031% 765%
Star Wars: Jedi - Fallen Order 1031% 765%
Grand Theft Auto VI 1158% 862%
Need For Speed Heat 723% 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 HD 7730 v2 XFX Core 4GB Edition.

The GT 640 has a 246 MHz higher core clock speed than the HD 7730, but the HD 7730 has 8 more Texture Mapping Units than the GT 640. As a result, the HD 7730 exhibits a 2.5 GTexel/s better Texture Fill Rate than the GT 640. 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 246 MHz higher core clock speed than the HD 7730 and the same number of Render Output Units. This results in the GT 640 providing 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 HD 7730 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 HD 7730 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 19.3 GB/sec greater memory bandwidth than the HD 7730, which means that the memory performance of the GT 640 is slightly better than the HD 7730.

Both the Radeon HD 7730 v2 XFX Core 4GB Edition and the GeForce GT 640 v3 Zotac 2GB Edition have 384 Shader Processing Units. While the two GPUs have the same number of SPUs, the actual performance delivered by the GT 640 is 402 and by the HD 7730 is 402. Knowing that the shader performance of the GT 640 is superior, it is not necessary to examine the GPUs' respective Texture and Pixel Fill Rates.

The Radeon HD 7730 v2 XFX Core 4GB Edition requires 47 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 HD 7730 and a PSU with at least 350 Watts for the GT 640. The GT 640 requires 2 Watts more than the HD 7730 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 HD 7730.

Game FPS Benchmarks On Ultra

GPU Architecture

Core Speed800 MHzvs1046 MHz
Boost Clock-vs-
ArchitectureGCN 1.0 Cape Verde LEKepler GK208-400-A1
OC Potential Good vs Poor
Driver Support Good vs Good
Release Date11 Jul 2013vs29 May 2013
GPU LinkGD LinkGD Link

Resolution Performance

green tick vs -
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GPU Memory

Memory4096 MBvs2048 MB
Memory Speed650 MHzvs1252 MHz
Memory Bus128 Bitvs64 Bit
Memory TypeDDR3vsGDDR5
Memory Bandwidth20.8GB/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 Units384vs384
Actual Shader Performance13%vs19%
Texture Mapping Units24vs16
Texture Rate19.2 GTexel/svs16.7 GTexel/s
Render Output Units8vs8
Pixel Rate6.4 GPixel/svs8.4 GPixel/s

GPU Outputs

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

GPU Power Requirements

Max Power47 Wattsvs49 Watts
Recommended PSU400 Watts & 29 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 i3-3210 3.2GHzvsIntel Core i3-3220 3.3GHz
Recommended RAM8 GBvs8 GB
Maximum Recommended Gaming Resolution1366x768vs1366x768

Gaming Performance Value

Performance Value

GPU Mini Review

Mini ReviewOverview
Radeon HD 7730 v2 XFX Core 4GB Edition is a Special Edition of AMD's Middle-Class Radeon HD 7730 v2, created by XFX.

Overclock: Central Unit

Overclock: Memory Clock
The Operating was reduced from 900MHz to 650MHz.

Frame Buffer
The Frame Buffer was doubled to 4GB.
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 Larger Frame Buffer is mostly a Gimmick.

Cooling Solution

Benchmarks indicate no performance over the reference Radeon HD 7730 v2.
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