Quadro K620 and GeForce GT 420 OEM - video card comparison
Quadro K620
GeForce GT 420 OEM
Architecture
Maxwell (2014−2018)
Fermi (2010−2014)
GPU code name
GM107
GF108
Market segment
Workstation
Desktop
Release date
July 2014
September 2010
Interface
PCIe 2.0 x16
PCIe 2.0 x16
Supplementary power connectors
None
None
Boost clock speed
1124 MHz
-
Core clock speed
1058 MHz
700 MHz
Floating-point performance
863.2 gflops
134.4 gflops
Manufacturing process technology
28 nm
40 nm
Number of transistors
1,870 million
585 million
Pipelines / CUDA cores
384
48
Power consumption (TDP)
41 Watt
50 Watt
Texture fill rate
26.98
2.800
Memory type
128 Bit
DDR3
Maximum RAM amount
2 GB
1 GB
Memory bus width
128 Bit
128 Bit
Memory clock speed
1800 MHz
1800 MHz
Memory bandwidth
Up to 29 GB/s
28.8 GB/s
Display Connectors
DVI-I DP
1x DVI, 1x HDMI, 1x VGA
Number of simultaneous displays
4
-
HDMI
-
+
DirectX
12
12 (11_0)
CUDA
5.0
2.1
OpenCL
1.2
1.1
OpenGL
4.5
4.6
Shader Model
5
5.1
Vulkan
+
N/A
3D Vision Pro
+
-
Mosaic
+
-
nView Desktop Management
+
-