GeForce GTX 660 Rev. 2 and GeForce GTX 490 - video card comparison
GeForce GTX 660 Rev. 2
GeForce GTX 490
Architecture
Kepler (2012−2018)
Fermi (2010−2014)
GPU code name
GK104
GF100
Market segment
Desktop
Desktop
Release date
September 2014
-
Interface
PCIe 3.0 x16
PCIe 2.0 x16
Supplementary power connectors
1x 6-pin
2x 8-pin
Boost clock speed
1032 MHz
-
Core clock speed
980 MHz
608 MHz
Floating-point performance
1,981 gflops
-
Manufacturing process technology
28 nm
40 nm
Number of transistors
3,540 million
3,100 million
Pipelines / CUDA cores
960
480
Power consumption (TDP)
140 Watt
365 Watt
Texture fill rate
82.56
36.48
Memory type
GDDR5
GDDR5
Maximum RAM amount
2 GB
1536 MB
Memory bus width
192 Bit
384 Bit
Memory clock speed
6008 MHz
3.4 GB/s
Memory bandwidth
144.2 GB/s
164.0 GB/s
Display Connectors
2x DVI, 1x HDMI, 1x DisplayPort
3x DVI, 1x mini-DisplayPort
HDMI
+
-
DirectX
12 (11_0)
12 (11_0)
CUDA
3.0
2.0
OpenCL
1.2
1.1
OpenGL
4.6
4.6
Shader Model
5.1
5.1
Vulkan
1.1.126
N/A