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 HD 7730 v2
Red Dead Redemption 2 529% 723%
Cyberpunk 2077 765% 1031%
Doom Eternal 441% 608%
Call of Duty: Modern Warfare 529% 723%
Dragon Ball Z Kakarot 288% 408%
Halo: Reach 100% 162%
Microsoft Flight Simulator 765% 1031%
Star Wars: Jedi - Fallen Order 765% 1031%
Grand Theft Auto VI 862% 1158%
Need For Speed Heat 529% 723%

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.

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 GT 640 was released less than a year after the HD 7730, 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 HD 7730 v2 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 HD 7730, which means that the memory performance of the GT 640 is slightly better than the HD 7730.

Both the GeForce GT 640 v3 Zotac 2GB Edition and the Radeon HD 7730 v2 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 261. 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 GeForce GT 640 v3 Zotac 2GB Edition requires 49 Watts to run and the Radeon HD 7730 v2 requires 47 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 HD 7730. 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 Speed1046 MHzvs800 MHz
Boost Clock-vs-
ArchitectureKepler GK208-400-A1GCN 1.0 Cape Verde LE
OC Potential Poor vs Good
Driver Support Good vs Good
Release Date29 May 2013vs01 May 2013
GPU LinkGD LinkGD Link
Approved
Comparison

Resolution Performance

1366x768 - vs green tick
6.3
1600x900
5.2
green tick vs
4.8
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 Units384vs384
Actual Shader Performance19%vs13%
Technology28nmvs28nm
Texture Mapping Units16vs24
Texture Rate16.7 GTexel/svs19.2 GTexel/s
Render Output Units8vs8
Pixel Rate8.4 GPixel/svs6.4 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 Wattsvs47 Watts
Recommended PSU350 Watts & 26 Ampsvs400 Watts & 29 Amps

GPU Features

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

GPU Supporting Hardware

Recommended ProcessorIntel Core i3-3220 3.3GHzvsIntel Core i3-3210 3.2GHz
Recommended RAM8 GBvs8 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.
Overview
Radeon HD 7730 v2 is a Fast-Middle-Class Graphics Card based on the First revision of the GCN Architecture.

Architecture
The GCN Architecture succeeds the 40nm Terascale Architecture. In addition to being produced with a 28nm Technology, the GCN Architecture adds other Technologies that allow for energy efficiency. For example, ZeroCore Power, a long idle power saving technology, allows the Graphics Cards to shut down by itself when the Monitor is turned off.
GCN also adds Improved Anisotropic Filtering, DirectX 11 Tessellation and the Partially Resident Textures (PRT) Technology, which enables future games to utilize ultra-high resolution textures with the same performance as today's small and often repetitive textures.

GPU
It equips a GPU codenamed Cape Verde LE which has 6 Compute Units activated and thus offers 384 Shader Processing Units, 24 TMUs and 8 ROPs. The Central Unit Operates at 800MHz.

Memory
The GPU accesses a 2GB frame buffer of DDR3, through a 128-bit memory interface. The size of the frame buffer is exaggerated and in no way benefits the GPU. The memory clock operates at 900MHz.

Features
DirectX 11.0 Support (11.0 Hardware Default) and support for Crossfire, PowerTune Technology, Eyefinity, App Acceleration, HD3D, ZeroCore Power and other technologies.

Cooling Solution
The Cooling Solution consists of a Single-Fan.

Power Consumption
With a rated board TDP of 47W, it requires at least a 400W PSU and it relies entirely on the PCI Slot for power, meaning no extra connectors are required.

Performance
Gaming benchmarks put its performance somewhat below a GeForce GT 640.

System Suggestions
We recommend a modest processor (Intel Core i3) and 8GB of RAM for a system with Radeon HD 7730 v2.
Recommended CPU
Possible GPU Upgrades
GPU Variants
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