HD Graphics 400 and GeForce GT 420 OEM - video card comparison
HD Graphics 400
GeForce GT 420 OEM
Architecture
Generation 8.0 (2014−2015)
Fermi (2010−2014)
GPU code name
Braswell GT1
GF108
Market segment
Desktop
Desktop
Release date
April 2015
September 2010
Interface
PCIe 3.0 x1
PCIe 2.0 x16
Supplementary power connectors
-
None
Boost clock speed
640 MHz
-
Core clock speed
320 MHz
700 MHz
Floating-point performance
134.4 gflops
134.4 gflops
Manufacturing process technology
14 nm
40 nm
Number of transistors
189 million
585 million
Pipelines / CUDA cores
96
48
Power consumption (TDP)
6 Watt
50 Watt
Texture fill rate
7.680
2.800
Memory type
DDR3L
DDR3
Maximum RAM amount
8 GB
1 GB
Memory bus width
System Shared
128 Bit
Memory clock speed
System Shared
1800 MHz
Memory bandwidth
-
28.8 GB/s
Display Connectors
No outputs
1x DVI, 1x HDMI, 1x VGA
HDMI
-
+
DirectX
12 (11_1)
12 (11_0)
CUDA
-
2.1
OpenCL
2.0
1.1
OpenGL
4.3
4.6
Shader Model
5.1
5.1
Vulkan
1.1.80
N/A