GeForce GT 640 vs Quadro FX 3800

If you are going to buy a new graphics card and are choosing between GeForce GT 640 and Quadro FX 3800, there are a couple of things to consider. Cards with more VRAM in general perform better and allow you to play on higher graphics settings. Size also makes a difference. A model with a large heatsink can occupy up to three expansion slots on a motherboard. Be sure you have enough room in your PC case. When comparing GPUs with different architectures, more processing cores and even higher TFLOPS will not always translate to better performance. To help you decide which GPU you need, we have measured frame rates in a number of popular games. For more on how the GeForce GT 640 stacks up against Quadro FX 3800, check out specs charts below.

Main Specs

  GeForce GT 640 Quadro FX 3800
Power consumption (TDP) 65 Watt 108 Watt
Interface PCIe 3.0 x16 PCIe 2.0 x16
Supplementary power connectors None 1x 6-pin
Memory type DDR3 GDDR3
Maximum RAM amount 2 GB 1 GB
Display Connectors 1x DVI, 1x HDMI, 1x DisplayPort 1x DVI, 2x DisplayPort
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  • Quadro FX 3800 has 66% more power consumption, than GeForce GT 640.
  • GeForce GT 640 is connected by PCIe 3.0 x16, and Quadro FX 3800 uses PCIe 2.0 x16 interface.
  • GeForce GT 640 has 1 GB more memory, than Quadro FX 3800.
  • Both cards are used in Desktops.
  • GeForce GT 640 is build with Kepler architecture, and Quadro FX 3800 - with Tesla 2.0.
  • Core clock speed of GeForce GT 640 is 302 MHz higher, than Quadro FX 3800.
  • GeForce GT 640 is manufactured by 28 nm process technology, and Quadro FX 3800 - by 55 nm process technology.
  • Quadro FX 3800 is 53 mm longer, than GeForce GT 640.
  • Memory clock speed of GeForce GT 640 is 182 MHz higher, than Quadro FX 3800.

Game benchmarks

high / 1080p 2−3 0−1
ultra / 1080p 1−2 0−1
QHD / 1440p 0−1 0−1
low / 720p 14−16 10−11
medium / 1080p 5−6 1−2
The average gaming FPS of GeForce GT 640 in Assassin's Creed Odyssey is 66% more, than Quadro FX 3800.

Full Specs

  GeForce GT 640 Quadro FX 3800
Architecture Kepler Tesla 2.0
Code name GK107 GT200B
Type Desktop Workstation
Release date 5 June 2012 30 March 2009
Pipelines 384 192
Core clock speed 902 MHz 600 MHz
Transistor count 1,270 million 1,400 million
Manufacturing process technology 28 nm 55 nm
Texture fill rate 28.86 38.40
Floating-point performance 692.7 gflops 462.3 gflops
Length 145 mm 198 mm
Memory bus width 128 Bit 256 Bit
Memory clock speed 1782 MHz 1600 MHz
Memory bandwidth 28.51 GB/s 51.2 GB/s
DirectX 12 (11_0) 11.1 (10_0)
Shader Model 5.1 4.0
OpenGL 4.6 3.3
OpenCL 1.2 1.1
Vulkan 1.1.126 N/A
CUDA 3.0 1.3
Bitcoin / BTC (SHA256) 24 Mh/s
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