Radeon HD 8490 OEM and GeForce GT 420 OEM - video card comparison
Radeon HD 8490 OEM
GeForce GT 420 OEM
Architecture
TeraScale 2 (2009−2015)
Fermi (2010−2014)
GPU code name
Caicos
GF108
Market segment
Desktop
Desktop
Release date
July 2013
September 2010
Interface
PCIe 2.0 x16
PCIe 2.0 x16
Supplementary power connectors
None
None
Core clock speed
875 MHz
700 MHz
Floating-point performance
280.0 gflops
134.4 gflops
Manufacturing process technology
40 nm
40 nm
Number of transistors
370 million
585 million
Pipelines / CUDA cores
160
48
Power consumption (TDP)
35 Watt
50 Watt
Texture fill rate
7.000
2.800
Memory type
DDR3
DDR3
Maximum RAM amount
1 GB
1 GB
Memory bus width
64 Bit
128 Bit
Memory clock speed
1800 MHz
1800 MHz
Memory bandwidth
14.4 GB/s
28.8 GB/s
Display Connectors
1x DVI, 1x DisplayPort
1x DVI, 1x HDMI, 1x VGA
HDMI
-
+
DirectX
11.2 (11_0)
12 (11_0)
CUDA
-
2.1
OpenCL
1.2
1.1
OpenGL
4.4
4.6
Shader Model
5.0
5.1
Vulkan
N/A
N/A