GeForce GT 640 Rev. 2 and GeForce GT 740 OEM - video card comparison
GeForce GT 640 Rev. 2
GeForce GT 740 OEM
Architecture
Kepler 2.0 (2013−2015)
Kepler (2012−2018)
GPU code name
GK208
GK106
Market segment
Desktop
Desktop
Release date
May 2013
April 2015
Interface
PCIe 2.0 x8
PCIe 3.0 x16
Supplementary power connectors
None
None
Core clock speed
1046 MHz
1050 MHz
Floating-point performance
803.3 gflops
772.6 gflops
Manufacturing process technology
28 nm
28 nm
Number of transistors
915 million
2,540 million
Pipelines / CUDA cores
384
384
Power consumption (TDP)
49 Watt
65 Watt
Texture fill rate
33.47
33.60
Memory type
GDDR5
GDDR5
Maximum RAM amount
1 GB
1 GB
Memory bus width
64 Bit
128 Bit
Memory clock speed
5008 MHz
5012 MHz
Memory bandwidth
40.06 GB/s
80.19 GB/s
Display Connectors
1x DVI, 1x HDMI, 1x VGA
No outputs
HDMI
+
-
DirectX
12 (11_0)
12 (11_0)
CUDA
3.5
3.0
OpenCL
1.2
1.2
OpenGL
4.6
4.6
Shader Model
5.1
5.1
Vulkan
1.1.126
1.1.126