Maxwell GPU Surface Book and Radeon Xpress 1250 - video card comparison
Maxwell GPU Surface Book
Radeon Xpress 1250
Architecture
Maxwell (2014−2018)
R400 (2004−2008)
GPU code name
Surface Book
RS690
Market segment
Laptop
Laptop
Release date
October 2015
August 2006
Interface
-
PCIe 1.0 x16
Supplementary power connectors
-
None
Boost clock speed
993 MHz
400 MHz
Core clock speed
954 MHz
400 MHz
Manufacturing process technology
28 nm
80 nm
Number of transistors
-
120 million
Pipelines / CUDA cores
384
4
Texture fill rate
-
1.600
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
12 (FL 11_0)
9.0b (9_2)
CUDA
+
-
OpenCL
-
N/A
OpenGL
-
2.0
Vulkan
-
N/A
Optimus
+
-