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Gaming Performance Comparison

Recommended System Requirements
Game GeForce GT 640 v3 Zotac 2GB Edition Quadro 4000
Red Dead Redemption 2 529% 547%
Cyberpunk 2077 765% 789%
Doom Eternal 441% 457%
Call of Duty: Modern Warfare 529% 547%
Dragon Ball Z Kakarot 288% 299%
Halo: Reach 100% 106%
Microsoft Flight Simulator 765% 789%
Star Wars: Jedi - Fallen Order 765% 789%
Grand Theft Auto VI 862% 889%
Need For Speed Heat 529% 547%

In terms of overall gaming performance, the graphical capabilities of the Nvidia GeForce GT 640 v3 Zotac 2GB Edition are marginally better than the Nvidia Quadro 4000.

The GT 640 has a 571 MHz higher core clock speed but 16 fewer Texture Mapping Units than the Quadro 4000. The lower TMU count doesn't matter, though, as altogether the GT 640 manages to provide 1.5 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 571 MHz higher core clock speed than the Quadro 4000, but the Quadro 4000 has 24 more Render Output Units than the GT 640. As a result, the Quadro 4000 exhibits a 6.8 GPixel/s better Pixel Fill Rate than the GT 640. 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 a year more recently than the Quadro 4000, and so the GT 640 is likely to have better driver support, meaning it will be more optimized for running the latest games when compared to the Quadro 4000.

The GeForce GT 640 v3 Zotac 2GB Edition and the Quadro 4000 have the same amount of video memory, but are likely to provide slightly different experiences when displaying game textures at high resolutions.

The Quadro 4000 has 49.8 GB/sec greater memory bandwidth than the GT 640, which means that the memory performance of the Quadro 4000 is noticeably better than the GT 640.

The GeForce GT 640 v3 Zotac 2GB Edition has 384 Shader Processing Units and the Quadro 4000 has 256. However, the actual shader performance of the GT 640 is 402 and the actual shader performance of the Quadro 4000 is 243. The GT 640 having 159 better shader performance is not particularly notable, as altogether the Quadro 4000 performs better when taking into account other relevant data.

The GT 640 transistor size technology is 12 nm (nanometers) smaller than the Quadro 4000. This means that the GT 640 is expected to run slightly cooler and achieve higher clock frequencies than the Quadro 4000. While they exhibit similar graphical performance, the GT 640 should consume less power than the Quadro 4000.

The GeForce GT 640 v3 Zotac 2GB Edition requires 49 Watts to run and the Quadro 4000 requires 142 Watts. We would recommend a PSU with at least 350 Watts for the GT 640 and a PSU with at least 500 Watts for the Quadro 4000. The Quadro 4000 requires 93 Watts more than the GT 640 to run. The difference is significant enough that the Quadro 4000 may have an adverse affect on your yearly electricity bills in comparison to the GT 640.

Game FPS Benchmarks On Ultra

GPU Architecture

Core Speed1046 MHzvs475 MHz
Boost Clock-vs-
ArchitectureKepler GK208-400-A1Fermi GF100-100-KD
OC Potential Poor vs Good
Driver Support Good vs -
Release Date29 May 2013vs02 Nov 2010
GPU LinkGD LinkGD Link

Resolution Performance

1366x768 - green tick vs green tick -
green tick vs -
green tick vs -
green tick vs -
green tick vs -

GPU Memory

Memory2048 MBvs2048 MB
Memory Speed1252 MHzvs702 MHz
Memory Bus64 Bitvs256 Bit
Memory TypeGDDR5vsGDDR5
Memory Bandwidth40.1GB/secvs89.9GB/sec
L2 Cache 128 KB vs green tick 384 KB
Delta Color Compression no vs no
Memory Performance 0% green tick vs green tick 0%

GPU Display

Shader Processing Units384vs256
Actual Shader Performance19%vs12%
Texture Mapping Units16vs32
Texture Rate16.7 GTexel/svs15.2 GTexel/s
Render Output Units8vs32
Pixel Rate8.4 GPixel/svs15.2 GPixel/s

GPU Outputs

Max Digital Resolution (WxH)4096x2160vs2560x1600
VGA Connections1vs0
DVI Connections1vs2
HDMI Connections1vs0
DisplayPort Connections-vs-

GPU Power Requirements

Max Power49 Wattsvs142 Watts
Recommended PSU350 Watts & 26 Ampsvs500 Watts & 33 Amps

GPU Features

Shader Model5.0vs5.0
Open GL4.5vs4.1
Open CL-vs-
Notebook GPUnono

GPU Supporting Hardware

Recommended ProcessorIntel Core i3-3220 3.3GHzvsIntel Core i5-760 2.8GHz
Recommended RAM8 GBvs8 GB
Maximum Recommended Gaming Resolution1366x768vs1920x1080

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.

Without Overclocking Out of The Box, GeForce GT 640 v3 Zotac 2GB Edition is as fast as the reference GeForce GT 640 v3.
Quadro 4000 is a middle-class professional card based on the 40nm, Fermi architecture.

It's based on the Fermi GF100-100-KD GPU and thus offers 352 Shader Processing Units, 44 TMUs and 40 ROPs, on a 256-bit memory interface of fast GDDR5. The central unit runs at 450MHz and the memory clock operates at up to 702MHz. It has a L2 Cache of 384KB and a rated board TDP of 142 Watts.

Despite exhibiting similarities to GeForce GTX 460, due to being under-clocked and because Quadro 4000's drivers are only certified for professional applications only, its gaming performance is up to 10% slower than GeForce GTS 450.
Recommended CPU
Possible GPU Upgrades
GPU Variants