GeForce GT 630 and GeForce GTX 645 OEM - video card comparison
GeForce GT 630
GeForce GTX 645 OEM
Architecture
Fermi (2010−2014)
Kepler (2012−2018)
GPU code name
GF108
GK106
Market segment
Desktop
Desktop
Release date
May 2012
April 2013
Interface
PCIe 2.0 x16
PCIe 3.0 x16
Supplementary power connectors
None
None
Core clock speed
810 MHz
824 MHz
Floating-point performance
311.0 gflops
949.2 gflops
Manufacturing process technology
40 nm
28 nm
Number of transistors
585 million
2,540 million
Pipelines / CUDA cores
96
576
Power consumption (TDP)
65 Watt
65 Watt
Texture fill rate
12.96
39.55
Memory type
DDR3
GDDR5
Maximum RAM amount
2 GB
1 GB
Memory bus width
128 Bit
128 Bit
Memory clock speed
1800 MHz
4000 MHz
Memory bandwidth
28.8 GB/s
64 GB/s
Display Connectors
1x DVI, 1x HDMI, 1x VGA
1x DVI, 1x HDMI, 1x DisplayPort
HDMI
+
+
DirectX
12 (11_0)
12 (11_0)
CUDA
2.1
3.0
OpenCL
1.1
1.2
OpenGL
4.6
4.6
Shader Model
5.1
5.1
Vulkan
N/A
1.1.126