Maxwell GPU Surface Book and Radeon RX 640 - video card comparison
Maxwell GPU Surface Book
Radeon RX 640
Architecture
Maxwell (2014−2018)
Polaris (2016−2019)
GPU code name
Surface Book
Polaris 12
Market segment
Laptop
Laptop
Release date
October 2015
August 2019
Interface
-
PCIe 3.0 x8
Supplementary power connectors
-
None
Boost clock speed
993 MHz
1218 MHz
Core clock speed
954 MHz
1218 MHz
Manufacturing process technology
28 nm
14 nm
Number of transistors
-
2,200 million
Pipelines / CUDA cores
384
640
Power consumption (TDP)
-
50 Watt
Texture fill rate
-
38.98
Memory type
GDDR5
GDDR5
Maximum RAM amount
1 GB
4 GB
Memory bus width
64 Bit
64 Bit
Memory clock speed
5012 MHz
6000 MHz
Memory bandwidth
-
112.0 GB/s
Shared memory
-
-
Display Connectors
-
1x DVI, 1x HDMI, 1x DisplayPort
HDMI
-
+
DirectX
12 (FL 11_0)
12 (12_0)
CUDA
+
-
OpenCL
-
2.0
OpenGL
-
4.6
Shader Model
-
6.4
Vulkan
-
1.2.131
FreeSync
-
+
Optimus
+
-