GeForce 8400 GS and Radeon HD 7720 OEM - video card comparison
GeForce 8400 GS
Radeon HD 7720 OEM
Architecture
Tesla (2006−2010)
TeraScale 2 (2009−2015)
GPU code name
G86
Barts
Market segment
Desktop
Desktop
Release date
April 2007
March 2013
Interface
PCIe 1.0 x16
PCIe 2.0 x16
Supplementary power connectors
None
-
SLI options
+
-
Core clock speed
459 MHz
840 MHz
Floating-point performance
29.376 gflops
1,344 gflops
Manufacturing process technology
80 nm
40 nm
Number of transistors
210 million
1,700 million
Pipelines / CUDA cores
16
800
Power consumption (TDP)
40 Watt
150 Watt
Texture fill rate
3.6 billion/sec
33.60
Memory type
DDR2
GDDR5
Maximum RAM amount
256 MB
1 GB
Memory bus width
64 Bit
256 Bit
Memory clock speed
800 MHz
4200 MHz
Memory bandwidth
6.4 GB/s
134.4 GB/s
Standard memory config per GPU
256 MB
-
Display Connectors
1x DVI, 1x VGA, 1x S-Video
2x DVI, 1x HDMI, 1x DisplayPort
HDMI
-
+
DirectX
11.1 (10_0)
11.2 (11_0)
CUDA
1.1
-
OpenCL
1.1
1.2
OpenGL
2.1
4.4
Shader Model
4.0
5.0
Vulkan
N/A
N/A