GeForce GT 640M vs GeForce GT 740

When comparing GeForce GT 640M and GeForce GT 740, 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 GeForce GT 740 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 GeForce GT 740
Power consumption (TDP) 32 Watt 64 Watt
Interface PCIe 3.0 x16 PCIe 3.0 x16
Supplementary power connectors 1x 6-pin
Memory type DDR3\GDDR5 GDDR5
Maximum RAM amount 2 GB 1 GB
Display Connectors No outputs 2x DVI, 1x mini-HDMI
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  • GeForce GT 740 has 100% more power consumption, than GeForce GT 640M.
  • Both video cards are using PCIe 3.0 x16 interface connection to a motherboard.
  • GeForce GT 640M has 1 GB more memory, than GeForce GT 740.
  • GeForce GT 640M is used in Laptops, and GeForce GT 740 - in Desktops.
  • GeForce GT 640M and GeForce GT 740 are build with Kepler architecture.
  • GeForce GT 640M and GeForce GT 740 are manufactured by 28 nm process technology.
  • Memory clock speed of GeForce GT 740 is 3212 MHz higher, than GeForce GT 640M.

Game benchmarks

high / 1080p 0−1 7−8
ultra / 1080p 0−1 4−5
QHD / 1440p 0−1 0−1
low / 720p 10−12 16−18
medium / 1080p 2−3 8−9
The average gaming FPS of GeForce GT 740 in Assassin's Creed Odyssey is 100% more, than GeForce GT 640M.

Full Specs

  GeForce GT 640M GeForce GT 740
Architecture Kepler Kepler
Code name N13P-GS GK107
Type Laptop Desktop
Release date 22 March 2012 29 May 2014
Pipelines 384 384
Core clock speed 993 MHz
Boost Clock 645 MHz
Transistor count 1,270 million 1,270 million
Manufacturing process technology 28 nm 28 nm
Texture fill rate 31.78
Floating-point performance 480.0 gflops 762.6 gflops
Length 145 mm
Memory bus width 128bit 128 Bit
Memory clock speed 1800 - 4000 MHz 5012 MHz
Memory bandwidth 80.19 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
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 25 Mh/s
Laptop size medium sized
Optimus +
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