HD Graphics 620 and HD Graphics 400 - video card comparison
HD Graphics 620
HD Graphics 400
Architecture
Gen. 9.5 Kaby Lake (2015−2017)
Generation 8.0 (2014−2015)
GPU code name
Kaby-Lake GT2
Braswell GT1
Market segment
Laptop
Desktop
Release date
August 2016
April 2015
Interface
PCIe 3.0 x1
PCIe 3.0 x1
Boost clock speed
1050 MHz
640 MHz
Core clock speed
300 MHz
320 MHz
Floating-point performance
403.2 gflops
134.4 gflops
Manufacturing process technology
14 nm
14 nm
Number of transistors
189 million
189 million
Pipelines / CUDA cores
24
96
Power consumption (TDP)
15 Watt
6 Watt
Texture fill rate
25.20
7.680
Memory type
DDR3L/LPDDR3/LPDDR4
DDR3L
Maximum RAM amount
32 GB
8 GB
Memory bus width
64/128 Bit
System Shared
Memory clock speed
System Shared
System Shared
Shared memory
+
-
Display Connectors
No outputs
No outputs
DirectX
12 (12_1)
12 (11_1)
OpenCL
2.1
2.0
OpenGL
4.6
4.3
Shader Model
6.4
5.1
Vulkan
+
1.1.80
Quick Sync
+
-