HD Graphics 405 and Radeon 680M - video card comparison
HD Graphics 405
Radeon 680M
Architecture
Gen. 8 (2015−2016)
RDNA 2 (2020−2022)
GPU code name
Braswell
RDNA 2 Rembrandt
Market segment
Laptop
Laptop
Release date
April 2016
January 2022
Interface
PCIe 3.0 x1
PCIe 4.0 x8
Supplementary power connectors
-
None
Boost clock speed
700 MHz
2400 MHz
Core clock speed
320 MHz
-
Floating-point performance
213.1 gflops
-
Manufacturing process technology
14 nm
6 nm
Number of transistors
189 million
13,100 million
Pipelines / CUDA cores
16
768
Power consumption (TDP)
6 Watt
45 Watt
Texture fill rate
11.20
115.2
Memory type
System Shared
System Shared
Maximum RAM amount
System Shared
System Shared
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 (11_1)
12 (12_1)
OpenCL
2.0
2.0
OpenGL
4.3
4.6
Shader Model
5.1
6.5
Vulkan
1.1.80
1.2