GeForce GT 640M vs GeForce GTX 690

When choosing between GeForce GT 640M and GeForce GTX 690, it is worth examining the specifications of the models in detail. Do they meet the recommended requirements of modern games and software? Storage capacity, form factor, TDP, available ports, warranty and manufacturer support are all important. For example, the size of a PC case can limit the maximum thickness and length of the card. Often, instead of the factory overclocked card and RGB backlight, it is better to choose a reference model with a more efficient GPU. And make sure that your current power supply unit has the correct connection pins (using adapters is not recommended). This GPUs compare tool is meant to help you to choose the best graphics card for your build. Let's find out the difference between GeForce GT 640M and GeForce GTX 690.

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 GTX 690
Power consumption (TDP) 32 Watt 300 Watt
Interface PCIe 3.0 x16 PCIe 3.0 x16
Supplementary power connectors Two 8-pin
Memory type DDR3\GDDR5 GDDR5
Maximum RAM amount 2 GB 4 GB (4 GB per GPU) GDDR5
Display Connectors No outputs 3x DVI, 1x mini-DisplayPort
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  • GeForce GTX 690 has 837% more power consumption, than GeForce GT 640M.
  • Both video cards are using PCIe 3.0 x16 interface connection to a motherboard.
  • GeForce GTX 690 has 2 GB more memory, than GeForce GT 640M.
  • GeForce GT 640M is used in Laptops, and GeForce GTX 690 - in Desktops.
  • GeForce GT 640M and GeForce GTX 690 are build with Kepler architecture.
  • GeForce GT 640M and GeForce GTX 690 are manufactured by 28 nm process technology.
  • Memory clock speed of GeForce GTX 690 is 4208 MHz higher, than GeForce GT 640M.

Game benchmarks

high / 1080p 0−1 35−40
ultra / 1080p 0−1 21−24
QHD / 1440p 0−1 16−18
4K / 2160p 10−11
low / 720p 10−12 60−65
medium / 1080p 2−3 40−45
The average gaming FPS of GeForce GTX 690 in Assassin's Creed Odyssey is 766% more, than GeForce GT 640M.

Full Specs

  GeForce GT 640M GeForce GTX 690
Architecture Kepler Kepler
Code name N13P-GS GK104
Type Laptop Desktop
Release date 22 March 2012 3 May 2012
Pipelines 384 1536
Core clock speed 915 MHz
Boost Clock 645 MHz 1019 MHz
Transistor count 1,270 million 3,540 million
Manufacturing process technology 28 nm 28 nm
Texture fill rate 234 billion/sec
Floating-point performance 480.0 gflops 2x 3,130 gflops
Length 11.0" (27.9 cm)
Memory bus width 128bit 512-bit (256-bit per GPU)
Memory clock speed 1800 - 4000 MHz 6008 MHz
Memory bandwidth 384 GB/s
Shared memory -
DirectX 12 API 12 (11_0)
Shader Model 5.1 5.1
OpenGL 4.5 4.2
OpenCL 1.1 1.2
Vulkan 1.1.126 1.1.126
CUDA + +
CUDA cores 384 3072
Bus support PCI Express 2.0, PCI Express 3.0 PCI Express 3.0
Height 4.376" (11.1 cm)
SLI options +
Multi monitor support 4 displays
HDMI + Yes (via dongle)
HDCP + +
Maximum VGA resolution Up to 2048x1536 2048x1536
Audio input for HDMI Internal
3D Blu-Ray + +
3D Gaming +
3D Vision Live +
Bitcoin / BTC (SHA256) 18 Mh/s 156 Mh/s
Laptop size medium sized
Optimus +
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