GeForce GT 640M vs Quadro K4000

In this comparison between GeForce GT 640M and Quadro K4000 you will find out which graphics card performs better in today's games. Bear in mind that third-party versions may have more efficient cooling and higher clock speeds. This will increase cards' performance, though not by much. In addition to raw power you should also take into account the dimensions. Thicker models simply will not fit into a small mini-ITX case. The resolution of your monitor also affects the choice, since 4K gameplay requires a more powerful GPU. And don't overspend on the graphics card. Other parts of your build may also need to be upgraded, save some money for the CPU or power supply. For some people GeForce GT 640M will be the best choice, for others Quadro K4000 will be their preference. Study the comparison tables below and make your choice.

GeForce GT 640M is a Laptop Graphics Card

Note: GeForce GT 640M is only used in laptop graphics. It has lower GPU clock speed compared to the desktop variant, which results in lower power consumption, but also 10-30% lower gaming performance. Check available laptop models with GeForce GT 640M here:

Main Specs

  GeForce GT 640M Quadro K4000
Power consumption (TDP) 32 Watt 80 Watt
Interface PCIe 3.0 x16 PCIe 2.0 x16
Supplementary power connectors 1x 6-pin
Memory type DDR3\GDDR5 GDDR5
Maximum RAM amount 2 GB 3 GB
Display Connectors No outputs 1x DVI, 2x DisplayPort
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  • Quadro K4000 has 150% more power consumption, than GeForce GT 640M.
  • GeForce GT 640M 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 640M.
  • GeForce GT 640M is used in Laptops, and Quadro K4000 - in Desktops.
  • GeForce GT 640M and Quadro K4000 are build with Kepler architecture.
  • GeForce GT 640M and Quadro K4000 are manufactured by 28 nm process technology.
  • Memory clock speed of Quadro K4000 is 3816 MHz higher, than GeForce GT 640M.

Game benchmarks

high / 1080p 0−1 14−16
ultra / 1080p 0−1 8−9
QHD / 1440p 0−1 3−4
low / 720p 10−12 27−30
medium / 1080p 2−3 16−18
The average gaming FPS of Quadro K4000 in Assassin's Creed Odyssey is 266% more, than GeForce GT 640M.

Full Specs

  GeForce GT 640M Quadro K4000
Architecture Kepler Kepler
Code name N13P-GS GK106
Type Laptop Workstation
Release date 22 March 2012 1 March 2013
Pipelines 384 768
Core clock speed 810 MHz
Boost Clock 645 MHz
Transistor count 1,270 million 2,540 million
Manufacturing process technology 28 nm 28 nm
Texture fill rate 51.84
Floating-point performance 480.0 gflops 1,244 gflops
Length 241 mm
Memory bus width 128bit 192 Bit
Memory clock speed 1800 - 4000 MHz 5616 MHz
Memory bandwidth 134.8 GB/s
Shared memory -
DirectX 12 API 12 (11_0)
Shader Model 5.1 5.1
OpenGL 4.5 4.6
OpenCL 1.1 1.2
Vulkan 1.1.126 1.1.126
CUDA + 3.0
Monero / XMR (CryptoNight) 0.21 kh/s
CUDA cores 384
Bus support PCI Express 2.0, PCI Express 3.0
HDMI +
HDCP +
Maximum VGA resolution Up to 2048x1536
3D Blu-Ray +
Bitcoin / BTC (SHA256) 18 Mh/s 61 Mh/s
Laptop size medium sized
Optimus +
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