GeForce GT 640 Rev. 2 and GP106B - video card comparison
GeForce GT 640 Rev. 2
GP106B
Architecture
Kepler 2.0 (2013−2015)
Pascal (2016−2021)
GPU code name
GK208
GP106B
Market segment
Desktop
Desktop
Release date
May 2013
-
Interface
PCIe 2.0 x8
-
Supplementary power connectors
None
-
Core clock speed
1046 MHz
-
Floating-point performance
803.3 gflops
-
Manufacturing process technology
28 nm
16 nm
Number of transistors
915 million
4,400 million
Pipelines / CUDA cores
384
1280
Power consumption (TDP)
49 Watt
-
Texture fill rate
33.47
-
Memory type
GDDR5
-
Maximum RAM amount
1 GB
-
Memory bus width
64 Bit
-
Memory clock speed
5008 MHz
-
Memory bandwidth
40.06 GB/s
-
Display Connectors
1x DVI, 1x HDMI, 1x VGA
-
HDMI
+
-
DirectX
12 (11_0)
12 (12_1)
CUDA
3.5
6.1
OpenCL
1.2
1.2
OpenGL
4.6
4.6
Shader Model
5.1
6.4
Vulkan
1.1.126
1.2
PureVideo HD
-
VP8