GeForce GTX 660M vs Radeon HD 8770M

Find out if it is worth upgrading your current GPU setup by comparing GeForce GTX 660M and Radeon HD 8770M. Here you can take a closer look at graphics cards specs, such as core clock speed, memory type and size, display connectors, etc. The price, overall benchmark and gaming performances are usually defining factors when it comes to choosing between GeForce GTX 660M and Radeon HD 8770M. Make sure that the graphics card has compatible dimensions and will properly fit in your new or current computer case. Also these graphics cards may have different system power recommendations, so take that into consideration and upgrade your PSU if necessary.

GeForce GTX 660M and Radeon HD 8770M are Laptop Graphics Cards

Note: GeForce GTX 660M and Radeon HD 8770M 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 HD 8770M here:

Main Specs

  GeForce GTX 660M Radeon HD 8770M
Power consumption (TDP) 50 Watt
Interface MXM-B (3.0) PCIe 3.0 x8
Memory type GDDR5 GDDR5
Maximum RAM amount 2 GB 2 GB
Display Connectors No outputs No outputs
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  • GeForce GTX 660M is connected by MXM-B (3.0), and Radeon HD 8770M uses PCIe 3.0 x8 interface.
  • GeForce GTX 660M and Radeon HD 8770M have maximum RAM of 2 GB.
  • Both cards are used in Laptops.
  • GeForce GTX 660M is build with Kepler architecture, and Radeon HD 8770M - with GCN.
  • Core clock speed of GeForce GTX 660M is 60 MHz higher, than Radeon HD 8770M.
  • GeForce GTX 660M and Radeon HD 8770M are manufactured by 28 nm process technology.
  • Memory clock speed of Radeon HD 8770M 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 16−18
medium / 1080p 8−9 8−9
GeForce GTX 660M and Radeon HD 8770M have the same average FPS in Assassin's Creed Odyssey.

Full Specs

  GeForce GTX 660M Radeon HD 8770M
Architecture Kepler GCN
Code name N13E-GE Mars
Type Laptop Laptop
Release date 22 March 2012 16 November 2012
Pipelines 384 384
Core clock speed 835 MHz 775 MHz
Boost Clock 950 MHz 825 MHz
Transistor count 1,270 million 950 million
Manufacturing process technology 28 nm 28 nm
Texture fill rate 30.4 billion/sec 19.80
Floating-point performance 729.6 gflops 633.6 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
Laptop size large medium sized
Optimus +
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