GeForce GTX 660 Rev. 2 and GeForce GTX 745 OEM - video card comparison
GeForce GTX 660 Rev. 2
GeForce GTX 745 OEM
Architecture
Kepler (2012−2018)
Maxwell (2014−2018)
GPU code name
GK104
GM107
Market segment
Desktop
Desktop
Release date
September 2014
February 2014
Interface
PCIe 3.0 x16
PCIe 3.0 x16
Supplementary power connectors
1x 6-pin
None
Boost clock speed
1032 MHz
-
Core clock speed
980 MHz
1033 MHz
Floating-point performance
1,981 gflops
793.3 gflops
Manufacturing process technology
28 nm
28 nm
Number of transistors
3,540 million
1,870 million
Pipelines / CUDA cores
960
384
Power consumption (TDP)
140 Watt
55 Watt
Texture fill rate
82.56
24.79
Memory type
GDDR5
DDR3
Maximum RAM amount
2 GB
4 GB
Memory bus width
192 Bit
128 Bit
Memory clock speed
6008 MHz
1800 MHz
Memory bandwidth
144.2 GB/s
28.8 GB/s
Display Connectors
2x DVI, 1x HDMI, 1x DisplayPort
1x DVI, 1x HDMI, 1x VGA
HDMI
+
+
DirectX
12 (11_0)
12 (11_0)
CUDA
3.0
5.0
OpenCL
1.2
1.2
OpenGL
4.6
4.6
Shader Model
5.1
5.1
Vulkan
1.1.126
1.1.126