GeForce GTX 660M vs Radeon 540

When choosing between GeForce GTX 660M and Radeon 540, 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 GTX 660M and Radeon 540.

GeForce GTX 660M is a Laptop Graphics Card

Note: GeForce GTX 660M 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 GTX 660M here:

Main Specs

  GeForce GTX 660M Radeon 540
Power consumption (TDP) 50 Watt 50 Watt
Interface MXM-B (3.0) PCIe 3.0 x8
Supplementary power connectors None
Memory type GDDR5 GDDR5
Maximum RAM amount 2 GB 2 GB
Display Connectors No outputs 1x DVI, 1x HDMI, 1x DisplayPort
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  • Both graphics cards have the same power consumption of 50 Watt.
  • GeForce GTX 660M is connected by MXM-B (3.0), and Radeon 540 uses PCIe 3.0 x8 interface.
  • GeForce GTX 660M and Radeon 540 have maximum RAM of 2 GB.
  • GeForce GTX 660M is used in Laptops, and Radeon 540 - in Desktops.
  • GeForce GTX 660M is build with Kepler architecture, and Radeon 540 - with GCN 4.0.
  • Core clock speed of Radeon 540 is 265 MHz higher, than GeForce GTX 660M.
  • GeForce GTX 660M is manufactured by 28 nm process technology, and Radeon 540 - by 14 nm process technology.
  • Memory clock speed of Radeon 540 is 5000 MHz higher, than GeForce GTX 660M.

Game benchmarks

high / 1080p 6−7 6−7
ultra / 1080p 4−5 3−4
QHD / 1440p 0−1 0−1
low / 720p 16−18 14−16
medium / 1080p 8−9 7−8
The average gaming FPS of GeForce GTX 660M in Assassin's Creed Odyssey is 12% more, than Radeon 540.

Full Specs

  GeForce GTX 660M Radeon 540
Architecture Kepler GCN 4.0
Code name N13E-GE Lexa
Type Laptop Desktop
Release date 22 March 2012 26 March 2019
Pipelines 384 512
Core clock speed 835 MHz 1100 MHz
Boost Clock 950 MHz 1124 MHz
Transistor count 1,270 million 2,200 million
Manufacturing process technology 28 nm 14 nm
Texture fill rate 30.4 billion/sec 35.97
Floating-point performance 729.6 gflops
Length 145 mm
Memory bus width 128bit 64 Bit
Memory clock speed 2000 MHz 7000 MHz
Memory bandwidth 64.0 GB/s 56 GB/s
Shared memory -
DirectX 12 API 12 (12_0)
Shader Model 5.1 6.4
OpenGL 4.5 4.6
OpenCL 1.1 2.0
Vulkan 1.1.126 1.2.131
CUDA +
CUDA cores 384
Bus support PCI Express 2.0, PCI Express 3.0
SLI options +
HDMI +
HDCP +
Maximum VGA resolution Up to 2048x1536
Bitcoin / BTC (SHA256) 36 Mh/s
Laptop size large
Optimus +
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