GeForce GT 640 Rev. 2 and GeForce GT 440 OEM - video card comparison
GeForce GT 640 Rev. 2
GeForce GT 440 OEM
Architecture
Kepler 2.0 (2013−2015)
Fermi (2010−2014)
GPU code name
GK208
GF106
Market segment
Desktop
Desktop
Release date
May 2013
October 2010
Interface
PCIe 2.0 x8
PCIe 2.0 x16
Supplementary power connectors
None
None
Core clock speed
1046 MHz
810 MHz
Floating-point performance
803.3 gflops
466.6 gflops
Manufacturing process technology
28 nm
40 nm
Number of transistors
915 million
1,170 million
Pipelines / CUDA cores
384
144
Power consumption (TDP)
49 Watt
65 Watt
Texture fill rate
33.47
19.44
Memory type
GDDR5
DDR3
Maximum RAM amount
1 GB
1536 MB
Memory bus width
64 Bit
192 Bit
Memory clock speed
5008 MHz
1800 MHz
Memory bandwidth
40.06 GB/s
43.2 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
3.5
2.1
OpenCL
1.2
1.1
OpenGL
4.6
4.6
Shader Model
5.1
5.1
Vulkan
1.1.126
N/A