GeForce GT 630 and GeForce GT 640 Rev. 2 - video card comparison
GeForce GT 630
GeForce GT 640 Rev. 2
Architecture
Fermi (2010−2014)
Kepler 2.0 (2013−2015)
GPU code name
GF108
GK208
Market segment
Desktop
Desktop
Release date
May 2012
May 2013
Interface
PCIe 2.0 x16
PCIe 2.0 x8
Supplementary power connectors
None
None
Core clock speed
810 MHz
1046 MHz
Floating-point performance
311.0 gflops
803.3 gflops
Manufacturing process technology
40 nm
28 nm
Number of transistors
585 million
915 million
Pipelines / CUDA cores
96
384
Power consumption (TDP)
65 Watt
49 Watt
Texture fill rate
12.96
33.47
Memory type
DDR3
GDDR5
Maximum RAM amount
2 GB
1 GB
Memory bus width
128 Bit
64 Bit
Memory clock speed
1800 MHz
5008 MHz
Memory bandwidth
28.8 GB/s
40.06 GB/s
Display Connectors
1x DVI, 1x HDMI, 1x VGA
1x DVI, 1x HDMI, 1x VGA
HDMI
+
+
DirectX
12 (11_0)
12 (11_0)
CUDA
2.1
3.5
OpenCL
1.1
1.2
OpenGL
4.6
4.6
Shader Model
5.1
5.1
Vulkan
N/A
1.1.126