GeForce 940A vs GeForce GTX 660

If you are going to buy a new graphics card and are choosing between GeForce 940A and GeForce GTX 660, 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 940A stacks up against GeForce GTX 660, check out specs charts below.

Main Specs

  GeForce 940A GeForce GTX 660
Power consumption (TDP) 33 Watt 140 Watt
Interface PCIe 3.0 x8 PCIe 3.0 x16
Supplementary power connectors One 6-pin
Memory type DDR3 GDDR5
Maximum RAM amount 1 GB 2 GB
Display Connectors No outputs 2x DVI, 1x HDMI, 1x DisplayPort
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  • GeForce GTX 660 has 324% more power consumption, than GeForce 940A.
  • GeForce 940A is connected by PCIe 3.0 x8, and GeForce GTX 660 uses PCIe 3.0 x16 interface.
  • GeForce GTX 660 has 1 GB more memory, than GeForce 940A.
  • Both cards are used in Desktops.
  • GeForce 940A is build with Maxwell architecture, and GeForce GTX 660 - with Kepler.
  • Core clock speed of GeForce 940A is 49 MHz higher, than GeForce GTX 660.
  • GeForce 940A and GeForce GTX 660 are manufactured by 28 nm process technology.
  • Memory clock speed of GeForce 940A is 1996 MHz higher, than GeForce GTX 660.

Game benchmarks

high / 1080p 4−5 20−22
ultra / 1080p 2−3 12−14
QHD / 1440p 0−1 6−7
4K / 2160p 5−6
low / 720p 14−16 40−45
medium / 1080p 5−6 24−27
The average gaming FPS of GeForce GTX 660 in Assassin's Creed Odyssey is 316% more, than GeForce 940A.

Full Specs

  GeForce 940A GeForce GTX 660
Architecture Maxwell Kepler
Code name GM108 GK106
Type Desktop Desktop
Release date 13 March 2015 6 September 2012
Pipelines 384 960
Core clock speed 1029 MHz 980 MHz
Boost Clock 1124 MHz 1033 MHz
Transistor count 2,540 million
Manufacturing process technology 28 nm 28 nm
Texture fill rate 17.98 78.4 billion/sec
Floating-point performance 863.2 gflops 1,981 gflops
Length 9.5" (24.1 cm)
Memory bus width 64 Bit 192-bit GDDR5
Memory clock speed 2002 MHz 6.0 GB/s
Memory bandwidth 16.02 GB/s 144.2 GB/s
DirectX 12 (11_0) 12 (11_0)
Shader Model 5.1 5.1
OpenGL 4.6 4.3
OpenCL 1.2 1.2
Vulkan 1.1.126 1.1.126
CUDA 5.0 +
CUDA cores 960
Bus support PCI Express 3.0
Height 4.376" (11.1 cm)
SLI options +
Multi monitor support 4 displays
HDMI +
HDCP +
Maximum VGA resolution 2048x1536
Audio input for HDMI Internal
3D Blu-Ray +
3D Gaming +
3D Vision +
Bitcoin / BTC (SHA256) 66 Mh/s
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