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Gaming Performance Comparison

Recommended System Requirements
Game Radeon HD 5670 Asus 1GB Edition GeForce GT 640 v3 Zotac 2GB Edition
Red Dead Redemption 2 664% 529%
Halo: Reach 143% 100%
Cyberpunk 2077 950% 765%
Call of Duty: Modern Warfare 664% 529%
Doom Eternal 557% 441%
Microsoft Flight Simulator 950% 765%
Grand Theft Auto VI 1068% 862%
Dragon Ball Z Kakarot 371% 288%
Star Wars: Jedi - Fallen Order 950% 765%
Need For Speed Heat 664% 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 5670 Asus 1GB Edition.

The GT 640 has a 271 MHz higher core clock speed but 4 fewer Texture Mapping Units than the HD 5670. The lower TMU count doesn't matter, though, as altogether the GT 640 manages to provide 1.2 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 271 MHz higher core clock speed than the HD 5670 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 GT 640 was released over three years more recently than the HD 5670, and so the GT 640 is likely to have far better driver support, meaning it will be much more optimized and ultimately superior to the HD 5670 when running the latest games.

The GT 640 has 1024 MB more video memory than the HD 5670, so is likely to be much better at displaying game textures at higher resolutions. However, the overall memory performance is about the same.

The HD 5670 has 23.9 GB/sec greater memory bandwidth than the GT 640, which means that the memory performance of the HD 5670 is slightly better than the GT 640.

The Radeon HD 5670 Asus 1GB Edition has 400 Shader Processing Units and the GeForce GT 640 v3 Zotac 2GB Edition has 384. However, the actual shader performance of the HD 5670 is 155 and the actual shader performance of the GT 640 is 402. The GT 640 having 247 better shader performance is not particularly notable, as altogether the HD 5670 performs better when taking into account other relevant data.

The GT 640 transistor size technology is 12 nm (nanometers) smaller than the HD 5670. This means that the GT 640 is expected to run slightly cooler and achieve higher clock frequencies than the HD 5670.

The Radeon HD 5670 Asus 1GB Edition requires 64 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 5670 and a PSU with at least 350 Watts for the GT 640. The HD 5670 requires 15 Watts more than the GT 640 to run. The difference is not significant enough for the HD 5670 to have a noticeably larger impact on your yearly electricity bills than the GT 640.

Game FPS Benchmarks On Ultra

GPU Architecture

Core Speed775 MHzvs1046 MHz
Boost Clock-vs-
ArchitectureTerascale 2 Redwood XTKepler GK208-400-A1
OC Potential Fair vs Poor
Driver Support Poor vs Good
Release Date14 Jan 2010vs29 May 2013
GPU LinkGD LinkGD Link

Resolution Performance

green tick vs -
vs green tick
vs green tick
vs green tick
3840x2160 - vs green tick

GPU Memory

Memory1024 MBvs2048 MB
Memory Speed1000 MHzvs1252 MHz
Memory Bus128 Bitvs64 Bit
Memory TypeGDDR5vsGDDR5
Memory Bandwidth64GB/secvs40.1GB/sec
L2 Cache 256 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 Units400vs384
Actual Shader Performance7%vs19%
Texture Mapping Units20vs16
Texture Rate15.5 GTexel/svs16.7 GTexel/s
Render Output Units8vs8
Pixel Rate6.2 GPixel/svs8.4 GPixel/s

GPU Outputs

Max Digital Resolution (WxH)2560x1600vs4096x2160
VGA Connections1vs1
DVI Connections1vs1
HDMI Connections1vs1
DisplayPort Connections0vs-

GPU Power Requirements

Max Power64 Wattsvs49 Watts
Recommended PSU400 Watts & 27 Ampsvs350 Watts & 26 Amps

GPU Features

Shader Model5.0vs5.0
Open GL4.3vs4.5
Open CL-vs-
Notebook GPUnono

GPU Supporting Hardware

Recommended ProcessorIntel Pentium Dual Core E5500 2.8GHzvsIntel Core i3-3220 3.3GHz
Recommended RAM4 GBvs8 GB
Maximum Recommended Gaming Resolution1440x900vs1366x768

Gaming Performance Value

Performance Value

GPU Mini Review

Mini ReviewOverview
Radeon HD 5670 Asus 1GB Edition is a special edition of AMD's Middle-Class Radeon HD 5670, created by Asus.

Overclock: Central Unit

Overclock: Memory Clock

Frame Buffer

Cooling Solution
Asus exclusive Dust-Proof Fan: dissipate heat efficiently while expending lifespan by 25%.

Benchmarks indicate no performance over the reference Radeon HD 5670.
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