GeForce GT 640 vs Quadro K4000

When comparing GeForce GT 640 and Quadro K4000, we look primarily at benchmarks and game tests. But it is not only about the numbers. Often you can find third-party models with higher clock speeds, better cooling, or a customizable RGB lighting. Not all of them will have all the features you need. Another thing to consider is the port selection. Most graphics cards have at least one DisplayPort and HDMI interface, but some monitors require DVI. Before you buy, check the TDP of the graphics card - this characteristic will help you estimate the consumption of the graphics card. You may even have to upgrade your PSU to meet its requirements. An important factor when choosing between GeForce GT 640 and Quadro K4000 is the price. Does the additional cost justify the performance hit? Our comparison should help you make the right decision.

Main Specs

  GeForce GT 640 Quadro K4000
Power consumption (TDP) 65 Watt 80 Watt
Interface PCIe 3.0 x16 PCIe 2.0 x16
Supplementary power connectors None 1x 6-pin
Memory type DDR3 GDDR5
Maximum RAM amount 2 GB 3 GB
Display Connectors 1x DVI, 1x HDMI, 1x DisplayPort 1x DVI, 2x DisplayPort
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  • Quadro K4000 has 23% more power consumption, than GeForce GT 640.
  • GeForce GT 640 is connected by PCIe 3.0 x16, and Quadro K4000 uses PCIe 2.0 x16 interface.
  • Quadro K4000 has 1 GB more memory, than GeForce GT 640.
  • Both cards are used in Desktops.
  • GeForce GT 640 and Quadro K4000 are build with Kepler architecture.
  • Core clock speed of GeForce GT 640 is 92 MHz higher, than Quadro K4000.
  • GeForce GT 640 and Quadro K4000 are manufactured by 28 nm process technology.
  • Quadro K4000 is 96 mm longer, than GeForce GT 640.
  • Memory clock speed of Quadro K4000 is 3834 MHz higher, than GeForce GT 640.

Game benchmarks

high / 1080p 2−3 14−16
ultra / 1080p 1−2 8−9
QHD / 1440p 0−1 3−4
low / 720p 14−16 27−30
medium / 1080p 5−6 16−18
The average gaming FPS of Quadro K4000 in Assassin's Creed Odyssey is 183% more, than GeForce GT 640.

Full Specs

  GeForce GT 640 Quadro K4000
Architecture Kepler Kepler
Code name GK107 GK106
Type Desktop Workstation
Release date 5 June 2012 1 March 2013
Pipelines 384 768
Core clock speed 902 MHz 810 MHz
Transistor count 1,270 million 2,540 million
Manufacturing process technology 28 nm 28 nm
Texture fill rate 28.86 51.84
Floating-point performance 692.7 gflops 1,244 gflops
Length 145 mm 241 mm
Memory bus width 128 Bit 192 Bit
Memory clock speed 1782 MHz 5616 MHz
Memory bandwidth 28.51 GB/s 134.8 GB/s
DirectX 12 (11_0) 12 (11_0)
Shader Model 5.1 5.1
OpenGL 4.6 4.6
OpenCL 1.2 1.2
Vulkan 1.1.126 1.1.126
CUDA 3.0 3.0
Monero / XMR (CryptoNight) 0.21 kh/s
Bitcoin / BTC (SHA256) 24 Mh/s 61 Mh/s
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