GeForce GT 640M vs Quadro FX 3800

When comparing GeForce GT 640M and Quadro FX 3800, 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 640M and Quadro FX 3800 is the price. Does the additional cost justify the performance hit? Our comparison should help you make the right decision.

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 FX 3800
Power consumption (TDP) 32 Watt 108 Watt
Interface PCIe 3.0 x16 PCIe 2.0 x16
Supplementary power connectors 1x 6-pin
Memory type DDR3\GDDR5 GDDR3
Maximum RAM amount 2 GB 1 GB
Display Connectors No outputs 1x DVI, 2x DisplayPort
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  • Quadro FX 3800 has 237% more power consumption, than GeForce GT 640M.
  • GeForce GT 640M is connected by PCIe 3.0 x16, and Quadro FX 3800 uses PCIe 2.0 x16 interface.
  • GeForce GT 640M has 1 GB more memory, than Quadro FX 3800.
  • GeForce GT 640M is used in Laptops, and Quadro FX 3800 - in Desktops.
  • GeForce GT 640M is build with Kepler architecture, and Quadro FX 3800 - with Tesla 2.0.
  • GeForce GT 640M is manufactured by 28 nm process technology, and Quadro FX 3800 - by 55 nm process technology.
  • Memory clock speed of GeForce GT 640M is 200 MHz higher, than Quadro FX 3800.

Game benchmarks

high / 1080p 0−1 0−1
ultra / 1080p 0−1 0−1
QHD / 1440p 0−1 0−1
low / 720p 10−12 10−11
medium / 1080p 2−3 1−2
GeForce GT 640M and Quadro FX 3800 have the same average FPS in Assassin's Creed Odyssey.

Full Specs

  GeForce GT 640M Quadro FX 3800
Architecture Kepler Tesla 2.0
Code name N13P-GS GT200B
Type Laptop Workstation
Release date 22 March 2012 30 March 2009
Pipelines 384 192
Core clock speed 600 MHz
Boost Clock 645 MHz
Transistor count 1,270 million 1,400 million
Manufacturing process technology 28 nm 55 nm
Texture fill rate 38.40
Floating-point performance 480.0 gflops 462.3 gflops
Length 198 mm
Memory bus width 128bit 256 Bit
Memory clock speed 1800 - 4000 MHz 1600 MHz
Memory bandwidth 51.2 GB/s
Shared memory -
DirectX 12 API 11.1 (10_0)
Shader Model 5.1 4.0
OpenGL 4.5 3.3
OpenCL 1.1 1.1
Vulkan 1.1.126 N/A
CUDA + 1.3
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
Laptop size medium sized
Optimus +
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