Maxwell GPU Surface Book (940M, GDDR5) and Radeon 660M - video card comparison
Maxwell GPU Surface Book (940M, GDDR5)
Radeon 660M
Architecture
Maxwell (2014−2018)
RDNA 2 (2020−2022)
GPU code name
Surface Book
RDNA 2 Rembrandt
Market segment
Laptop
Laptop
Release date
October 2015
January 2022
Interface
-
PCIe 4.0 x8
Supplementary power connectors
-
None
Boost clock speed
993 MHz
1900 MHz
Core clock speed
954 MHz
-
Manufacturing process technology
28 nm
6 nm
Number of transistors
-
13,100 million
Pipelines / CUDA cores
384
384
Power consumption (TDP)
-
45 Watt
Texture fill rate
-
45.60
Memory type
GDDR5
System Shared
Maximum RAM amount
1 GB
System Shared
Memory bus width
64 Bit
System Shared
Memory clock speed
5012 MHz
System Shared
Shared memory
-
-
Display Connectors
-
No outputs
DirectX
DirectX 12 (FL 11_0), Shader 5.0
12 (12_1)
CUDA
+
-
OpenCL
-
2.0
OpenGL
-
4.6
Shader Model
-
6.5
Vulkan
-
1.2
Optimus
+
-