GeForce GT 640 and Switch GPU - video card comparison
GeForce GT 640
Switch GPU
Architecture
Kepler (2012−2018)
Maxwell 2.0 (2015−2019)
GPU code name
GK107
GM20B
Market segment
Desktop
Desktop
Release date
June 2012
March 2017
Interface
PCIe 3.0 x16
IGP
Supplementary power connectors
None
None
Boost clock speed
-
768 MHz
Core clock speed
902 MHz
-
Floating-point performance
692.7 gflops
-
Manufacturing process technology
28 nm
20 nm
Number of transistors
1,270 million
2,000 million
Pipelines / CUDA cores
384
256
Power consumption (TDP)
65 Watt
15 Watt
Texture fill rate
28.86
12.29
Memory type
DDR3
DDR4
Maximum RAM amount
2 GB
4 GB
Memory bus width
128 Bit
64 Bit
Memory clock speed
1782 MHz
3200 MHz
Memory bandwidth
28.51 GB/s
25.6 GB/s
Display Connectors
1x DVI, 1x HDMI, 1x DisplayPort
No outputs
HDMI
+
-
DirectX
12 (11_0)
12 (12_1)
CUDA
3.0
5.3
OpenCL
1.2
1.2
OpenGL
4.6
4.6
Shader Model
5.1
6.4
Vulkan
1.1.126
1.1.126