GeForce GTX 660M vs Radeon E8860

If you are going to buy a new graphics card and are choosing between GeForce GTX 660M and Radeon E8860, 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 GTX 660M stacks up against Radeon E8860, check out specs charts below.

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 E8860
Power consumption (TDP) 50 Watt 37 Watt
Interface MXM-B (3.0) PCIe 3.0 x16
Memory type GDDR5 GDDR5
Maximum RAM amount 2 GB 2 GB
Display Connectors No outputs 4x mini-DisplayPort
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  • GeForce GTX 660M has 35% more power consumption, than Radeon E8860.
  • GeForce GTX 660M is connected by MXM-B (3.0), and Radeon E8860 uses PCIe 3.0 x16 interface.
  • GeForce GTX 660M and Radeon E8860 have maximum RAM of 2 GB.
  • GeForce GTX 660M is used in Laptops, and Radeon E8860 - in Desktops.
  • GeForce GTX 660M is build with Kepler architecture, and Radeon E8860 - with GCN 1.0.
  • Core clock speed of GeForce GTX 660M is 260 MHz higher, than Radeon E8860.
  • GeForce GTX 660M and Radeon E8860 are manufactured by 28 nm process technology.
  • Memory clock speed of Radeon E8860 is 2500 MHz higher, than GeForce GTX 660M.

Game benchmarks

high / 1080p 6−7 7−8
ultra / 1080p 4−5 4−5
QHD / 1440p 0−1 0−1
low / 720p 16−18 18−20
medium / 1080p 8−9 9−10
The average gaming FPS of Radeon E8860 in Assassin's Creed Odyssey is 11% more, than GeForce GTX 660M.

Full Specs

  GeForce GTX 660M Radeon E8860
Architecture Kepler GCN 1.0
Code name N13E-GE Venus
Type Laptop Desktop
Release date 22 March 2012 25 January 2014
Pipelines 384 640
Core clock speed 835 MHz 575 MHz
Boost Clock 950 MHz 625 MHz
Transistor count 1,270 million 1,500 million
Manufacturing process technology 28 nm 28 nm
Texture fill rate 30.4 billion/sec 25.00
Floating-point performance 729.6 gflops 800.0 gflops
Memory bus width 128bit 128 Bit
Memory clock speed 2000 MHz 4500 MHz
Memory bandwidth 64.0 GB/s 72 GB/s
Shared memory -
DirectX 12 API 12 (11_1)
Shader Model 5.1 5.1
OpenGL 4.5 4.6
OpenCL 1.1 1.2
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 48 Mh/s
Laptop size large
Optimus +
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