Radeon R6 M340DX and Radeon 680M - video card comparison
Radeon R6 M340DX
Radeon 680M
Architecture
GCN (2011−2017)
RDNA 2 (2020−2022)
GPU code name
Jet
RDNA 2 Rembrandt
Market segment
Laptop
Laptop
Release date
June 2015
January 2022
Interface
IGP
PCIe 4.0 x8
Supplementary power connectors
-
None
Boost clock speed
1030 MHz
2400 MHz
Manufacturing process technology
28 nm
6 nm
Number of transistors
690 million
13,100 million
Pipelines / CUDA cores
704
768
Power consumption (TDP)
-
45 Watt
Texture fill rate
24.72
115.2
Memory type
DDR3
System Shared
Maximum RAM amount
System Shared
System Shared
Memory bus width
System Shared
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
1.2
2.0
OpenGL
4.6
4.6
Shader Model
5.1
6.5
Vulkan
1.2.131
1.2