Radeon 540X and Radeon 660M - video card comparison
Passmark - benchmark score Radeon 540X vs Radeon 660M
Radeon 540X
1472
Radeon 660M
6474
Radeon 540X
Radeon 660M
Architecture
GCN 4.0 (2016−2020)
RDNA 2 (2020−2022)
GPU code name
Lexa
RDNA 2 Rembrandt
Market segment
Laptop
Laptop
Release date
August 2019
January 2022
Interface
PCIe 3.0 x8
PCIe 4.0 x8
Supplementary power connectors
None
None
Boost clock speed
1219 MHz
1900 MHz
Manufacturing process technology
14 nm
6 nm
Number of transistors
2,200 million
13,100 million
Pipelines / CUDA cores
512
384
Power consumption (TDP)
50 Watt
45 Watt
Texture fill rate
33.47
45.60
Memory type
GDDR5
System Shared
Maximum RAM amount
2 GB
System Shared
Memory bus width
64 Bit
System Shared
Memory clock speed
6000 MHz
System Shared
Memory bandwidth
112.0 GB/s
-
Shared memory
-
-
Display Connectors
1x DVI, 1x HDMI, 1x DisplayPort
No outputs
HDMI
+
-
DirectX
12 (12_0)
12 (12_1)
OpenCL
2.0
2.0
OpenGL
4.6
4.6
Shader Model
6.4
6.5
Vulkan
1.2.131
1.2