Radeon 680M and Radeon 660M - video card comparison
Passmark - benchmark score Radeon 680M vs Radeon 660M
Radeon 680M
6351
Radeon 660M
6474
Radeon 680M
Radeon 660M
Architecture
RDNA 2 (2020−2022)
RDNA 2 (2020−2022)
GPU code name
RDNA 2 Rembrandt
RDNA 2 Rembrandt
Market segment
Laptop
Laptop
Release date
January 2022
January 2022
Interface
PCIe 4.0 x8
PCIe 4.0 x8
Supplementary power connectors
None
None
Boost clock speed
2400 MHz
1900 MHz
Manufacturing process technology
6 nm
6 nm
Number of transistors
13,100 million
13,100 million
Pipelines / CUDA cores
768
384
Power consumption (TDP)
45 Watt
45 Watt
Texture fill rate
115.2
45.60
Memory type
System Shared
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 (12_1)
12 (12_1)
OpenCL
2.0
2.0
OpenGL
4.6
4.6
Shader Model
6.5
6.5
Vulkan
1.2
1.2