GeForce 9400 GT and GeForce 8400 GS PCI - video card comparison
GeForce 9400 GT
GeForce 8400 GS PCI
Architecture
Tesla (2006−2010)
Tesla 2.0 (2007−2013)
GPU code name
G96C
GT218
Market segment
Desktop
Desktop
Release date
August 2008
April 2007
Bus support
PCI-E 2.0
-
Interface
PCIe 2.0 x16
PCI
Supplementary power connectors
None
None
SLI options
+
-
Core clock speed
550 MHz
520 MHz
CUDA cores
16
-
Floating-point performance
29.376 gflops
39.36 gflops
Manufacturing process technology
55 nm
40 nm
Number of transistors
314 million
260 million
Pipelines / CUDA cores
16
16
Power consumption (TDP)
50 Watt
40 Watt
Maximum GPU temperature
105 °C
-
Texture fill rate
4.4 billion/sec
4.160
Memory type
DDR2
DDR3
Maximum RAM amount
512 MB
512 MB
Memory bus width
128 Bit
64 Bit
Memory clock speed
400 MHz
1000 MHz
Memory bandwidth
12.8 GB/s
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)
11.1 (10_1)
CUDA
+
1.2
OpenCL
1.1
1.1
OpenGL
2.1
3.3
Shader Model
4.0
4.1
Vulkan
N/A
N/A