Quadro K420 and GeForce 8400 GS - video card comparison
Passmark - benchmark score Quadro K420 vs GeForce 8400 GS
Quadro K420
768
GeForce 8400 GS
156
Quadro K420
GeForce 8400 GS
Architecture
Kepler (2012−2018)
Tesla (2006−2010)
GPU code name
GK107
G86
Market segment
Workstation
Desktop
Release date
July 2014
April 2007
Interface
PCIe 2.0 x16
PCIe 1.0 x16
Supplementary power connectors
None
None
SLI options
-
+
Core clock speed
876 MHz
459 MHz
Floating-point performance
336.4 gflops
29.376 gflops
Manufacturing process technology
28 nm
80 nm
Number of transistors
1,270 million
210 million
Pipelines / CUDA cores
192
16
Power consumption (TDP)
41 Watt
40 Watt
Texture fill rate
14.02
3.6 billion/sec
Memory type
128 Bit
DDR2
Maximum RAM amount
1 GB/2 GB
256 MB
Memory bus width
128 Bit
64 Bit
Memory clock speed
1782 MHz
800 MHz
Memory bandwidth
Up to 29 GB/s
6.4 GB/s
Standard memory config per GPU
-
256 MB
Display Connectors
DVI-I DP
1x DVI, 1x VGA, 1x S-Video
Number of simultaneous displays
4
-
DirectX
12
11.1 (10_0)
CUDA
3.0
1.1
OpenCL
1.2
1.1
OpenGL
4.5
2.1
Shader Model
5
4.0
Vulkan
+
N/A
3D Vision Pro
+
-
Mosaic
+
-
nView Desktop Management
+
-