GeForce GT 640M LE vs Quadro K3100M

If you are going to buy a new graphics card and are choosing between GeForce GT 640M LE and Quadro K3100M, 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 640M LE stacks up against Quadro K3100M, check out specs charts below.

GeForce GT 640M LE and Quadro K3100M are Laptop Graphics Cards

Note: GeForce GT 640M LE and Quadro K3100M are only used in laptop graphics. They have 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 LE or Quadro K3100M here:

Main Specs

  GeForce GT 640M LE Quadro K3100M
Power consumption (TDP) 20 Watt 75 Watt
Interface PCIe 2.0 x16 MXM-B (3.0)
Memory type DDR3\DDR5 GDDR5
Maximum RAM amount 2 GB 4 GB
Display Connectors No outputs No outputs
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  • Quadro K3100M has 275% more power consumption, than GeForce GT 640M LE.
  • GeForce GT 640M LE is connected by PCIe 2.0 x16, and Quadro K3100M uses MXM-B (3.0) interface.
  • Quadro K3100M has 2 GB more memory, than GeForce GT 640M LE.
  • GeForce GT 640M LE is used in Laptops, and Quadro K3100M - in Mobile workstations.
  • GeForce GT 640M LE is build with Fermi / Kepler architecture, and Quadro K3100M - with Kepler.
  • GeForce GT 640M LE and Quadro K3100M are manufactured by 28 nm process technology.
  • Memory clock speed of Quadro K3100M is 1400 MHz higher, than GeForce GT 640M LE.

Game benchmarks

high / 1080p 0−1 10−12
ultra / 1080p 7−8
QHD / 1440p 0−1 1−2
low / 720p 1−2 24−27
medium / 1080p 0−1 14−16
The average gaming FPS of Quadro K3100M in Assassin's Creed Odyssey is 2400% more, than GeForce GT 640M LE.

Full Specs

  GeForce GT 640M LE Quadro K3100M
Architecture Fermi / Kepler Kepler
Code name N13P-LP N15E-Q1-A2
Type Laptop Mobile workstation
Release date 22 March 2012 23 July 2013
Pipelines 384 768
Core clock speed 706 MHz
Transistor count 585 million 3,540 million
Manufacturing process technology 28 nm 28 nm
Texture fill rate 45.18
Floating-point performance 384.0 gflops 1,084 gflops
Memory bus width 128bit 256 Bit
Memory clock speed 1800 - 4000 MHz 3200 MHz
Memory bandwidth 102.4 GB/s
Shared memory - -
DirectX 12 API 12
Shader Model 5.1 5
OpenGL 4.5 4.5
OpenCL 1.1 1.2
Vulkan N/A 1.1.126
CUDA + +
CUDA cores Up to 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) 14 Mh/s 44 Mh/s
Laptop size medium sized large
Optimus + +
Display Port 1.2
3D Vision Pro +
Mosaic +
nView Display Management +
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