GeForce 9400 GT and GeForce GT 420 OEM - video card comparison
GeForce 9400 GT
GeForce GT 420 OEM
Architecture
Tesla (2006−2010)
Fermi (2010−2014)
GPU code name
G96C
GF108
Market segment
Desktop
Desktop
Release date
August 2008
September 2010
Bus support
PCI-E 2.0
-
Interface
PCIe 2.0 x16
PCIe 2.0 x16
Supplementary power connectors
None
None
SLI options
+
-
Core clock speed
550 MHz
700 MHz
CUDA cores
16
-
Floating-point performance
29.376 gflops
134.4 gflops
Manufacturing process technology
55 nm
40 nm
Number of transistors
314 million
585 million
Pipelines / CUDA cores
16
48
Power consumption (TDP)
50 Watt
50 Watt
Maximum GPU temperature
105 °C
-
Texture fill rate
4.4 billion/sec
2.800
Memory type
DDR2
DDR3
Maximum RAM amount
512 MB
1 GB
Memory bus width
128 Bit
128 Bit
Memory clock speed
400 MHz
1800 MHz
Memory bandwidth
12.8 GB/s
28.8 GB/s
Display Connectors
Dual Link DVI
1x DVI, 1x HDMI, 1x VGA
Multi monitor support
+
-
HDMI
+
+
Maximum VGA resolution
2048x1536
-
Audio input for HDMI
S/PDIF
-
DirectX
11.1 (10_0)
12 (11_0)
CUDA
+
2.1
OpenCL
1.1
1.1
OpenGL
2.1
4.6
Shader Model
4.0
5.1
Vulkan
N/A
N/A