Quadro K420 and GeForce 8400 GS PCI - video card comparison
Quadro K420
GeForce 8400 GS PCI
Architecture
Kepler (2012−2018)
Tesla 2.0 (2007−2013)
GPU code name
GK107
GT218
Market segment
Workstation
Desktop
Release date
July 2014
April 2007
Interface
PCIe 2.0 x16
PCI
Supplementary power connectors
None
None
Core clock speed
876 MHz
520 MHz
Floating-point performance
336.4 gflops
39.36 gflops
Manufacturing process technology
28 nm
40 nm
Number of transistors
1,270 million
260 million
Pipelines / CUDA cores
192
16
Power consumption (TDP)
41 Watt
40 Watt
Texture fill rate
14.02
4.160
Memory type
128 Bit
DDR3
Maximum RAM amount
1 GB/2 GB
512 MB
Memory bus width
128 Bit
64 Bit
Memory clock speed
1782 MHz
1000 MHz
Memory bandwidth
Up to 29 GB/s
8 GB/s
Display Connectors
DVI-I DP
1x DVI, 1x HDMI, 1x VGA
Number of simultaneous displays
4
-
HDMI
-
+
DirectX
12
11.1 (10_1)
CUDA
3.0
1.2
OpenCL
1.2
1.1
OpenGL
4.5
3.3
Shader Model
5
4.1
Vulkan
+
N/A
3D Vision Pro
+
-
Mosaic
+
-
nView Desktop Management
+
-