GeForce GTX 660M vs Radeon R9 270

In this comparison between GeForce GTX 660M and Radeon R9 270 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 660M will be the best choice, for others Radeon R9 270 will be their preference. Study the comparison tables below and make your choice.

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 R9 270
Power consumption (TDP) 50 Watt 150 Watt
Interface MXM-B (3.0) PCIe 3.0 x16
Supplementary power connectors 1 x 6-pin
Memory type GDDR5 GDDR5
Maximum RAM amount 2 GB 2 GB
Display Connectors No outputs 2x DVI, 1x HDMI, 1x DisplayPort
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  • Radeon R9 270 has 200% more power consumption, than GeForce GTX 660M.
  • GeForce GTX 660M is connected by MXM-B (3.0), and Radeon R9 270 uses PCIe 3.0 x16 interface.
  • GeForce GTX 660M and Radeon R9 270 have maximum RAM of 2 GB.
  • GeForce GTX 660M is used in Laptops, and Radeon R9 270 - in Desktops.
  • GeForce GTX 660M is build with Kepler architecture, and Radeon R9 270 - with GCN 1.0.
  • GeForce GTX 660M and Radeon R9 270 are manufactured by 28 nm process technology.

Game benchmarks

high / 1080p 6−7 21−24
ultra / 1080p 4−5 12−14
QHD / 1440p 0−1 7−8
4K / 2160p 5−6
low / 720p 16−18 40−45
medium / 1080p 8−9 27−30
The average gaming FPS of Radeon R9 270 in Assassin's Creed Odyssey is 188% more, than GeForce GTX 660M.

Full Specs

  GeForce GTX 660M Radeon R9 270
Architecture Kepler GCN 1.0
Code name N13E-GE Curacao
Type Laptop Desktop
Release date 22 March 2012 13 November 2013
Pipelines 384 1280
Core clock speed 835 MHz
Boost Clock 950 MHz 925 MHz
Transistor count 1,270 million 2,800 million
Manufacturing process technology 28 nm 28 nm
Texture fill rate 30.4 billion/sec 74.00
Floating-point performance 729.6 gflops 2,368 gflops
Length 210 mm
Memory bus width 128bit 256 Bit
Memory clock speed 2000 MHz
Memory bandwidth 64.0 GB/s 179.2 GB/s
Shared memory -
DirectX 12 API
Shader Model 5.1 5.1
OpenGL 4.5 4.6
OpenCL 1.1 1.2
Vulkan 1.1.126 +
CUDA +
FreeSync +
CUDA cores 384
Bus support PCI Express 2.0, PCI Express 3.0 PCIe 3.0
SLI options +
HDMI + +
HDCP +
Maximum VGA resolution Up to 2048x1536
Bitcoin / BTC (SHA256) 36 Mh/s 293 Mh/s
Laptop size large
Optimus +
Eyefinity +
HD3D +
TrueAudio +
Design reference
DisplayPort support +
CrossFire +
DDMA audio +
Ethereum / ETH (DaggerHashimoto) 16 Mh/s
LiquidVR +
TressFX +
UVD +
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