GeForce GT 645M vs Quadro 4000M

In this comparison between GeForce GT 645M and Quadro 4000M 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 645M will be the best choice, for others Quadro 4000M will be their preference. Study the comparison tables below and make your choice.

GeForce GT 645M and Quadro 4000M are Laptop Graphics Cards

Note: GeForce GT 645M and Quadro 4000M 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 645M or Quadro 4000M here:

Main Specs

  GeForce GT 645M Quadro 4000M
Power consumption (TDP) 32 Watt 100 Watt
Interface PCIe 3.0 x16 MXM-B (3.0)
Memory type DDR3\GDDR5 GDDR5
Maximum RAM amount 2 GB 2 GB
Display Connectors No outputs No outputs
  Check Price Check Price
  • Quadro 4000M has 212% more power consumption, than GeForce GT 645M.
  • GeForce GT 645M is connected by PCIe 3.0 x16, and Quadro 4000M uses MXM-B (3.0) interface.
  • GeForce GT 645M and Quadro 4000M have maximum RAM of 2 GB.
  • GeForce GT 645M is used in Laptops, and Quadro 4000M - in Mobile workstations.
  • GeForce GT 645M is build with Kepler architecture, and Quadro 4000M - with Fermi.
  • GeForce GT 645M is manufactured by 28 nm process technology, and Quadro 4000M - by 40 nm process technology.
  • Memory clock speed of GeForce GT 645M is 600 MHz higher, than Quadro 4000M.

Game benchmarks

high / 1080p 1−2 3−4
ultra / 1080p 0−1 1−2
QHD / 1440p 0−1 0−1
low / 720p 12−14 14−16
medium / 1080p 2−3 5−6
The average gaming FPS of Quadro 4000M in Assassin's Creed Odyssey is 60% more, than GeForce GT 645M.

Full Specs

  GeForce GT 645M Quadro 4000M
Architecture Kepler Fermi
Code name N13P-GS Fermi
Type Laptop Mobile workstation
Release date 22 March 2012 22 February 2011
Pipelines 384 336
Core clock speed 475 MHz
Transistor count 1,270 million 1,950 million
Manufacturing process technology 28 nm 40 nm
Texture fill rate 22.7 billion/sec 26.60
Floating-point performance 544.5 gflops 638.4 gflops
Memory bus width 128bit 256 Bit
Memory clock speed 1800 MHz 1200 MHz
Memory bandwidth 80 GB/s
Shared memory - -
DirectX 12 API 12 (11_0)
Shader Model 5.1 5.1
OpenGL 4.5 4.6
OpenCL 1.1 1.1
Vulkan 1.1.126 N/A
CUDA + 2.1
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) 19 Mh/s 82 Mh/s
Laptop size medium sized large
Optimus +
  Check Price Check Price