GeForce GT 740 and GeForce GT 640 Rev. 2 - video card comparison
GeForce GT 740
GeForce GT 640 Rev. 2
Architecture
Kepler (2012−2018)
Kepler 2.0 (2013−2015)
GPU code name
GK107
GK208
Market segment
Desktop
Desktop
Release date
May 2014
May 2013
Interface
PCIe 3.0 x16
PCIe 2.0 x8
Supplementary power connectors
1x 6-pin
None
Core clock speed
993 MHz
1046 MHz
Floating-point performance
762.6 gflops
803.3 gflops
Manufacturing process technology
28 nm
28 nm
Number of transistors
1,270 million
915 million
Pipelines / CUDA cores
384
384
Power consumption (TDP)
64 Watt
49 Watt
Texture fill rate
31.78
33.47
Memory type
GDDR5
GDDR5
Maximum RAM amount
4 GB
1 GB
Memory bus width
128 Bit
64 Bit
Memory clock speed
5012 MHz
5008 MHz
Memory bandwidth
80.19 GB/s
40.06 GB/s
Display Connectors
2x DVI, 1x mini-HDMI
1x DVI, 1x HDMI, 1x VGA
HDMI
+
+
DirectX
12 (11_0)
12 (11_0)
CUDA
3.0
3.5
OpenCL
1.2
1.2
OpenGL
4.6
4.6
Shader Model
5.1
5.1
Vulkan
1.1.126
1.1.126