GeForce GT 420 OEM and Radeon RX 6400 - video card comparison
GeForce GT 420 OEM
Radeon RX 6400
Architecture
Fermi (2010−2014)
RDNA 2.0 (2020−2022)
GPU code name
GF108
Navi 24
Market segment
Desktop
Desktop
Release date
September 2010
January 2022
Interface
PCIe 2.0 x16
PCIe 4.0 x4
Supplementary power connectors
None
None
Boost clock speed
-
2321 MHz
Core clock speed
700 MHz
-
Floating-point performance
134.4 gflops
-
Manufacturing process technology
40 nm
6 nm
Number of transistors
585 million
5,400 million
Pipelines / CUDA cores
48
768
Power consumption (TDP)
50 Watt
53 Watt
Texture fill rate
2.800
111.4
Memory type
DDR3
GDDR6
Maximum RAM amount
1 GB
4 GB
Memory bus width
128 Bit
64 Bit
Memory clock speed
1800 MHz
16 GB/s
Memory bandwidth
28.8 GB/s
128.0 GB/s
Display Connectors
1x DVI, 1x HDMI, 1x VGA
1x HDMI 2.1, 1x DisplayPort 1.4a
HDMI
+
+
DirectX
12 (11_0)
12 Ultimate (12_2)
CUDA
2.1
-
OpenCL
1.1
2.2
OpenGL
4.6
4.6
Shader Model
5.1
6.6
Vulkan
N/A
1.3