GeForce GTX 660 vs Radeon HD 7970M

In this comparison between GeForce GTX 660 and Radeon HD 7970M you will find out which graphics card performs better in today's games. Bear in mind that third-party versions may have more efficient cooling and higher clock speeds. This will increase cards' performance, though not by much. In addition to raw power you should also take into account the dimensions. Thicker models simply will not fit into a small mini-ITX case. The resolution of your monitor also affects the choice, since 4K gameplay requires a more powerful GPU. And don't overspend on the graphics card. Other parts of your build may also need to be upgraded, save some money for the CPU or power supply. For some people GeForce GTX 660 will be the best choice, for others Radeon HD 7970M will be their preference. Study the comparison tables below and make your choice.

Radeon HD 7970M is a Laptop Graphics Card

Note: Radeon HD 7970M 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 Radeon HD 7970M here:

Main Specs

  GeForce GTX 660 Radeon HD 7970M
Power consumption (TDP) 140 Watt 100 Watt
Interface PCIe 3.0 x16 MXM-B (3.0)
Supplementary power connectors One 6-pin None
Memory type GDDR5 GDDR5
Maximum RAM amount 2 GB 2 GB
Display Connectors 2x DVI, 1x HDMI, 1x DisplayPort No outputs
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  • GeForce GTX 660 has 40% more power consumption, than Radeon HD 7970M.
  • GeForce GTX 660 is connected by PCIe 3.0 x16, and Radeon HD 7970M uses MXM-B (3.0) interface.
  • GeForce GTX 660 and Radeon HD 7970M have maximum RAM of 2 GB.
  • GeForce GTX 660 is used in Desktops, and Radeon HD 7970M - in Laptops.
  • GeForce GTX 660 is build with Kepler architecture, and Radeon HD 7970M - with GCN.
  • Core clock speed of GeForce GTX 660 is 130 MHz higher, than Radeon HD 7970M.
  • GeForce GTX 660 and Radeon HD 7970M are manufactured by 28 nm process technology.
  • Memory clock speed of Radeon HD 7970M is 4794 MHz higher, than GeForce GTX 660.

Game benchmarks

high / 1080p 20−22 18−20
ultra / 1080p 12−14 10−12
QHD / 1440p 6−7 5−6
4K / 2160p 5−6 4−5
low / 720p 40−45 35−40
medium / 1080p 24−27 21−24
The average gaming FPS of GeForce GTX 660 in Assassin's Creed Odyssey is 18% more, than Radeon HD 7970M.

Full Specs

  GeForce GTX 660 Radeon HD 7970M
Architecture Kepler GCN
Code name GK106 Wimbledon XT
Type Desktop Laptop
Release date 6 September 2012 1 May 2012
Pipelines 960 1280
Core clock speed 980 MHz 850 MHz
Boost Clock 1033 MHz
Transistor count 2,540 million 2,800 million
Manufacturing process technology 28 nm 28 nm
Texture fill rate 78.4 billion/sec 68.00
Floating-point performance 1,981 gflops 2,176 gflops
Length 9.5" (24.1 cm)
Memory bus width 192-bit GDDR5 256 Bit
Memory clock speed 6.0 GB/s 4800 MHz
Memory bandwidth 144.2 GB/s 153.6 GB/s
Shared memory -
DirectX 12 (11_0) 12 (11_1)
Shader Model 5.1 5.1
OpenGL 4.3 4.6
OpenCL 1.2 1.2
Vulkan 1.1.126 1.2.131
CUDA +
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 254 Mh/s
Laptop size large
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