NVIDIA GeForce GT 640: specs and benchmarks

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Price now 137$
Games supported 62%
NVIDIA GeForce GT 640
NVIDIA GeForce GT 640
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  • Interface PCIe 3.0 x16
  • Core clock speed 902 MHz
  • Max video memory 2 GB
  • Memory type DDR3
  • Memory clock speed 1782 MHz
  • Maximum resolution
Year of release 2012
Performance 4.47

Summary

NVIDIA started GeForce GT 640 sales 5 June 2012 at a recommended price of $99. This is Kepler architecture desktop card based on 28 nm manufacturing process and primarily aimed at office use. 2 GB of DDR3 memory clocked at 1.78 GHz are supplied, and together with 128 Bit memory interface this creates a bandwidth of 28.51 GB/s.

Compatibility-wise, this is single-slot card attached via PCIe 3.0 x16 interface. Its manufacturer default version has a length of 145 mm. No additional power connector is required, and power consumption is at 65 Watt.

It provides poor gaming and benchmark performance at

4.47%

of a leader's which is NVIDIA GeForce RTX 3080 Ti.

General info

Of GeForce GT 640's architecture, market segment and release date.

Place in performance rating597
Value for money1.06
ArchitectureKepler
GPU code nameGK107
Market segmentDesktop
Release date5 June 2012 (9 years ago)
Launch price (MSRP)$99
Price now$137 (1.4x MSRP)of 10388 (Quadro GV100)
Value for money

To get the index we compare the characteristics of video cards and their relative prices.

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Technical specs

GeForce GT 640's general performance parameters such as number of shaders, GPU base clock, manufacturing process, texturing and calculation speed. These parameters indirectly speak of GeForce GT 640's performance, but for precise assessment you have to consider its benchmark and gaming test results.

Pipelines / CUDA cores384of 15360 (Radeon RX 7900 XT)
Core clock speed902 MHzof 2233 (Playstation 5 GPU)
Number of transistors1,270 millionof 14400 (GeForce GTX 1080 SLI Mobile)
Manufacturing process technology28 nmof 5 (Apple M1 GPU)
Thermal design power (TDP)65 Wattof 900 (Tesla S2050)
Texture fill rate28.86of 779.2 (Radeon RX 6900 XTX)
Floating-point performance692.7 gflopsof 16384 (Radeon Pro Duo)

Compatibility, dimensions and requirements

Information on GeForce GT 640's compatibility with other computer components. Useful when choosing a future computer configuration or upgrading an existing one. For desktop video cards it's interface and bus (motherboard compatibility), additional power connectors (power supply compatibility).

InterfacePCIe 3.0 x16
Length145 mm
Supplementary power connectorsNone

Memory

Parameters of memory installed on GeForce GT 640: its type, size, bus, clock and resulting bandwidth. Note that GPUs integrated into processors don't have dedicated memory and use a shared part of system RAM.

Memory typeDDR3
Maximum RAM amount2 GBof 128 (Radeon Instinct MI250X)
Memory bus width128 Bitof 8192 (Radeon Instinct MI250X)
Memory clock speed1782 MHzof 19500 (GeForce RTX 3090)
Memory bandwidth28.51 GB/sof 14400 (Radeon R7 M260)

Video outputs and ports

Types and number of video connectors present on GeForce GT 640. As a rule, this section is relevant only for desktop reference video cards, since for notebook ones the availability of certain video outputs depends on the laptop model.

Display Connectors1x DVI, 1x HDMI, 1x DisplayPort
HDMI+

API support

APIs supported by GeForce GT 640, sometimes including their particular versions.

DirectX12 (11_0)
Shader Model5.1
OpenGL4.6
OpenCL1.2
Vulkan1.1.126
CUDA3.0

Benchmark performance

Non-gaming benchmark performance of GeForce GT 640. Note that overall benchmark performance is measured in points in 0-100 range.


Overall score

This is our combined benchmark performance rating. We are regularly improving our combining algorithms, but if you find some perceived inconsistencies, feel free to speak up in comments section, we usually fix problems quickly.

GT 640 4.47
  • 3DMark Fire Strike Graphics
  • Passmark
  • Octane Render OctaneBench

Fire Strike is a DirectX 11 benchmark for gaming PCs. It features two separate tests displaying a fight between a humanoid and a fiery creature seemingly made of lava. Using 1920x1080 resolution, Fire Strike shows off some realistic enough graphics and is quite taxing on hardware.

GT 640 1560

This is probably the most ubiquitous benchmark, part of Passmark PerformanceTest suite. It gives the graphics card a thorough evaluation under various load, providing four separate benchmarks for Direct3D versions 9, 10, 11 and 12 (the last being done in 4K resolution if possible), and few more tests engaging DirectCompute capabilities.

GT 640 1191

This is a special benchmark measuring graphics card performance in OctaneRender, which is a realistic GPU rendering engine by OTOY Inc., available either as a standalone program, or as a plugin for 3DS Max, Cinema 4D and many other apps. It renders four different static scenes, then compares render times with a reference GPU which is currently GeForce GTX 980. This benchmark has nothing to do with gaming and is aimed at professional 3D graphics artists.

GT 640 10

Mining hashrates

Cryptocurrency mining performance of GeForce GT 640. Usually measured in megahashes per second.

Bitcoin / BTC (SHA256) 24 Mh/s  

Game benchmarks

Let's see how good GeForce GT 640 is for gaming. Particular gaming benchmark results are measured in frames per second. Comparisons with game system requirements are included, but remember that sometimes official requirements may reflect reality inaccurately.

Relative perfomance

Overall GeForce GT 640 performance compared to nearest competitors among desktop video cards.


AMD equivalent

We believe that the nearest equivalent to GeForce GT 640 from AMD is Radeon R7 250, which is nearly equal in speed and is lower by 1 position in our rating.

AMD Radeon R7 250 Radeon R7 250
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Here are some closest AMD rivals to GeForce GT 640:

Similar GPUs

Here is our recommendation of several graphics cards that are more or less close in performance to the one reviewed.

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AMD Radeon HD 6770 Radeon HD 6770
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ATI Radeon HD 5750 Radeon HD 5750
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User rating

Here you can see the user rating of the graphics card, as well as rate it yourself.


315 ratings
NVIDIA GeForce GT 640
NVIDIA GeForce GT 640

Questions and comments

Here you can ask a question about GeForce GT 640, agree or disagree with our judgements, or report an error or mismatch.