GeForce GT 640 Rev. 2 and GeForce GTX 750 v2 - video card comparison
GeForce GT 640 Rev. 2
GeForce GTX 750 v2
Architecture
Kepler 2.0 (2013−2015)
Maxwell 2.0 (2015−2019)
GPU code name
GK208
GM206
Market segment
Desktop
Desktop
Release date
May 2013
November 2015
Interface
PCIe 2.0 x8
PCIe 3.0 x16
Supplementary power connectors
None
-
Boost clock speed
-
1188 MHz
Core clock speed
1046 MHz
1038 MHz
Floating-point performance
803.3 gflops
1,217 gflops
Manufacturing process technology
28 nm
28 nm
Number of transistors
915 million
2,940 million
Pipelines / CUDA cores
384
512
Power consumption (TDP)
49 Watt
-
Texture fill rate
33.47
38.02
Memory type
GDDR5
GDDR5
Maximum RAM amount
1 GB
2 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)
12.0 (12_1)
CUDA
3.5
-
OpenCL
1.2
-
OpenGL
4.6
4.6
Shader Model
5.1
-
Vulkan
1.1.126
-