GeForce GTX 660M vs Radeon R9 M290X

When choosing between GeForce GTX 660M and Radeon R9 M290X, 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 R9 M290X.

GeForce GTX 660M and Radeon R9 M290X are Laptop Graphics Cards

Note: GeForce GTX 660M and Radeon R9 M290X 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 GTX 660M or Radeon R9 M290X here:

Main Specs

  GeForce GTX 660M Radeon R9 M290X
Power consumption (TDP) 50 Watt 100 Watt
Interface MXM-B (3.0) PCIe 3.0 x16
Supplementary power connectors None
Memory type GDDR5 GDDR5
Maximum RAM amount 2 GB 4 GB
Display Connectors No outputs No outputs
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  • Radeon R9 M290X has 100% more power consumption, than GeForce GTX 660M.
  • GeForce GTX 660M is connected by MXM-B (3.0), and Radeon R9 M290X uses PCIe 3.0 x16 interface.
  • Radeon R9 M290X has 2 GB more memory, than GeForce GTX 660M.
  • Both cards are used in Laptops.
  • GeForce GTX 660M is build with Kepler architecture, and Radeon R9 M290X - with GCN.
  • Core clock speed of Radeon R9 M290X is 15 MHz higher, than GeForce GTX 660M.
  • GeForce GTX 660M and Radeon R9 M290X are manufactured by 28 nm process technology.
  • Memory clock speed of GeForce GTX 660M is 800 MHz higher, than Radeon R9 M290X.

Game benchmarks

high / 1080p 6−7 16−18
ultra / 1080p 4−5 10−11
QHD / 1440p 0−1 4−5
4K / 2160p 4−5
low / 720p 16−18 30−35
medium / 1080p 8−9 20−22
The average gaming FPS of Radeon R9 M290X in Assassin's Creed Odyssey is 122% more, than GeForce GTX 660M.

Full Specs

  GeForce GTX 660M Radeon R9 M290X
Architecture Kepler GCN
Code name N13E-GE Neptune
Type Laptop Laptop
Release date 22 March 2012 7 January 2014
Pipelines 384 1280
Core clock speed 835 MHz 850 MHz
Boost Clock 950 MHz 900 MHz
Transistor count 1,270 million 2,800 million
Manufacturing process technology 28 nm 28 nm
Texture fill rate 30.4 billion/sec 72.00
Floating-point performance 729.6 gflops 2,304 gflops
Memory bus width 128bit 256 Bit
Memory clock speed 2000 MHz 1200 MHz
Memory bandwidth 64.0 GB/s 153.6 GB/s
Shared memory - -
DirectX 12 API
Shader Model 5.1 5.1
OpenGL 4.5 4.4
OpenCL 1.1 Not Listed
Vulkan 1.1.126
CUDA +
FreeSync +
CUDA cores 384
Bus support PCI Express 2.0, PCI Express 3.0 PCIe 3.0 x16
SLI options +
HDMI +
HDCP +
Maximum VGA resolution Up to 2048x1536
Bitcoin / BTC (SHA256) 36 Mh/s 300 Mh/s
Laptop size large large
Optimus +
Eyefinity +
HD3D +
PowerTune +
DualGraphics +
ZeroCore +
Switchable graphics +
Mantle +
Compute units 20
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