GeForce GT 640 and GeForce GTX 650 Ti OEM - video card comparison
GeForce GT 640
GeForce GTX 650 Ti OEM
Architecture
Kepler (2012−2018)
Kepler (2012−2018)
GPU code name
GK107
GK106
Market segment
Desktop
Desktop
Release date
June 2012
March 2013
Interface
PCIe 3.0 x16
PCIe 3.0 x16
Supplementary power connectors
None
1x 6-pin
Core clock speed
902 MHz
928 MHz
Floating-point performance
692.7 gflops
1,425 gflops
Manufacturing process technology
28 nm
28 nm
Number of transistors
1,270 million
2,540 million
Pipelines / CUDA cores
384
768
Power consumption (TDP)
65 Watt
110 Watt
Texture fill rate
28.86
59.39
Memory type
DDR3
GDDR5
Maximum RAM amount
2 GB
2 GB
Memory bus width
128 Bit
128 Bit
Memory clock speed
1782 MHz
5400 MHz
Memory bandwidth
28.51 GB/s
86.4 GB/s
Display Connectors
1x DVI, 1x HDMI, 1x DisplayPort
2x DVI, 1x mini-HDMI
HDMI
+
+
DirectX
12 (11_0)
12 (11_0)
CUDA
3.0
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