GeForce GTX 660 vs Radeon R7 M365X

If you are going to buy a new graphics card and are choosing between GeForce GTX 660 and Radeon R7 M365X, 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 660 stacks up against Radeon R7 M365X, check out specs charts below.

Main Specs

  GeForce GTX 660 Radeon R7 M365X
Power consumption (TDP) 140 Watt
Interface PCIe 3.0 x16 PCIe 3.0 x8
Supplementary power connectors One 6-pin
Memory type GDDR5 GDDR5
Maximum RAM amount 2 GB 4 GB
Display Connectors 2x DVI, 1x HDMI, 1x DisplayPort No outputs
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  • GeForce GTX 660 is connected by PCIe 3.0 x16, and Radeon R7 M365X uses PCIe 3.0 x8 interface.
  • Radeon R7 M365X has 2 GB more memory, than GeForce GTX 660.
  • Both cards are used in Desktops.
  • GeForce GTX 660 is build with Kepler architecture, and Radeon R7 M365X - with GCN 1.0.
  • Core clock speed of GeForce GTX 660 is 80 MHz higher, than Radeon R7 M365X.
  • GeForce GTX 660 and Radeon R7 M365X are manufactured by 28 nm process technology.
  • Memory clock speed of Radeon R7 M365X is 994 MHz higher, than GeForce GTX 660.

Game benchmarks

high / 1080p 20−22 0−1
ultra / 1080p 12−14 0−1
QHD / 1440p 6−7 0−1
4K / 2160p 5−6
low / 720p 40−45 10−12
medium / 1080p 24−27 2−3
The average gaming FPS of GeForce GTX 660 in Assassin's Creed Odyssey is 466% more, than Radeon R7 M365X.

Full Specs

  GeForce GTX 660 Radeon R7 M365X
Architecture Kepler GCN 1.0
Code name GK106 Litho
Type Desktop Desktop
Release date 6 September 2012 5 May 2015
Pipelines 960 384
Core clock speed 980 MHz 900 MHz
Boost Clock 1033 MHz 825 MHz
Transistor count 2,540 million 690 million
Manufacturing process technology 28 nm 28 nm
Texture fill rate 78.4 billion/sec 23.04
Floating-point performance 1,981 gflops 737.3 gflops
Length 9.5" (24.1 cm)
Memory bus width 192-bit GDDR5 128 Bit
Memory clock speed 6.0 GB/s 1000 MHz
Memory bandwidth 144.2 GB/s 64 GB/s
DirectX 12 (11_0)
Shader Model 5.1 5.1
OpenGL 4.3 4.4
OpenCL 1.2 Not Listed
Vulkan 1.1.126
CUDA +
FreeSync +
CUDA cores 960
Bus support PCI Express 3.0 PCIe 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
Eyefinity +
HD3D +
PowerTune +
DualGraphics +
ZeroCore +
Switchable graphics +
Mantle +
Compute units 6
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