GeForce GTX 660 vs Radeon R9 270X

In this comparison between GeForce GTX 660 and Radeon R9 270X 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 R9 270X will be their preference. Study the comparison tables below and make your choice.

Main Specs

  GeForce GTX 660 Radeon R9 270X
Power consumption (TDP) 140 Watt 180 Watt
Interface PCIe 3.0 x16 PCIe 3.0 x16
Supplementary power connectors One 6-pin 2 x 6-pin
Memory type GDDR5 GDDR5
Maximum RAM amount 2 GB 2 GB
Display Connectors 2x DVI, 1x HDMI, 1x DisplayPort 2x DVI, 1x HDMI, 1x DisplayPort
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  • Radeon R9 270X has 28% more power consumption, than GeForce GTX 660.
  • Both video cards are using PCIe 3.0 x16 interface connection to a motherboard.
  • GeForce GTX 660 and Radeon R9 270X have maximum RAM of 2 GB.
  • Both cards are used in Desktops.
  • GeForce GTX 660 is build with Kepler architecture, and Radeon R9 270X - with GCN.
  • GeForce GTX 660 and Radeon R9 270X are manufactured by 28 nm process technology.

Game benchmarks

high / 1080p 20−22 24−27
ultra / 1080p 12−14 14−16
QHD / 1440p 6−7 10−11
4K / 2160p 5−6 6−7
low / 720p 40−45 45−50
medium / 1080p 24−27 30−35
The average gaming FPS of Radeon R9 270X in Assassin's Creed Odyssey is 15% more, than GeForce GTX 660.

Full Specs

  GeForce GTX 660 Radeon R9 270X
Architecture Kepler GCN
Code name GK106 Curacao XT
Type Desktop Desktop
Release date 6 September 2012 8 October 2013
Pipelines 960 1280
Core clock speed 980 MHz
Boost Clock 1033 MHz 1050 MHz
Transistor count 2,540 million 2,800 million
Manufacturing process technology 28 nm 28 nm
Texture fill rate 78.4 billion/sec 84.00
Floating-point performance 1,981 gflops 2,688 gflops
Length 9.5" (24.1 cm)
Memory bus width 192-bit GDDR5 256 Bit
Memory clock speed 6.0 GB/s
Memory bandwidth 144.2 GB/s 179.2 GB/s
Shared memory -
DirectX 12 (11_0)
Shader Model 5.1 5.1
OpenGL 4.3 4.6
OpenCL 1.2 1.2
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 318 Mh/s
Eyefinity +
HD3D +
TrueAudio +
Design reference
DisplayPort support +
CrossFire +
DDMA audio +
Ethereum / ETH (DaggerHashimoto) 30 Mh/s
Zcash / ZEC (Equihash) 163 Sol/s
AppAcceleration +
LiquidVR +
TressFX +
UVD +
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