GeForce GT 640 Rev. 2 and GeForce RTX 2060 - video card comparison
GeForce GT 640 Rev. 2
GeForce RTX 2060
Architecture
Kepler 2.0 (2013−2015)
Turing (2018−2021)
GPU code name
GK208
Turing TU106
Market segment
Desktop
Desktop
Release date
May 2013
January 2019
Interface
PCIe 2.0 x8
PCIe 3.0 x16
Supplementary power connectors
None
1x 8-pin
Boost clock speed
-
1620 MHz
Core clock speed
1046 MHz
1320 MHz
Floating-point performance
803.3 gflops
-
Manufacturing process technology
28 nm
12 nm
Number of transistors
915 million
10,800 million
Pipelines / CUDA cores
384
1920
Power consumption (TDP)
49 Watt
175 Watt
Texture fill rate
33.47
201.6
Memory type
GDDR5
GDDR6
Maximum RAM amount
1 GB
6 GB
Memory bus width
64 Bit
192 Bit
Memory clock speed
5008 MHz
14000 MHz
Memory bandwidth
40.06 GB/s
336.0 GB/s
Shared memory
-
-
Display Connectors
1x DVI, 1x HDMI, 1x VGA
1x DVI, 1x HDMI, 2x DisplayPort, 1x USB Type-C
HDMI
+
+
G-SYNC support
-
+
DirectX
12 (11_0)
12
CUDA
3.5
7.5
OpenCL
1.2
1.2
OpenGL
4.6
4.6
Shader Model
5.1
6.5
Vulkan
1.1.126
1.2.131
VR Ready
-
+