Maxwell GPU Surface Book and Radeon HD 7640G + HD 7670M Dual Graphics - video card comparison
Maxwell GPU Surface Book
Radeon HD 7640G + HD 7670M Dual Graphics
Architecture
Maxwell (2014−2018)
Terascale 3 (2010−2013)
GPU code name
Surface Book
-
Market segment
Laptop
Laptop
Release date
October 2015
May 2012
Boost clock speed
993 MHz
-
Core clock speed
954 MHz
655 / 600 MHz
Manufacturing process technology
28 nm
40 nm
Pipelines / CUDA cores
384
736
Memory type
GDDR5
-
Maximum RAM amount
1 GB
-
Memory bus width
64 Bit
128 Bit
Memory clock speed
5012 MHz
1800 MHz
Shared memory
-
+
DirectX
12 (FL 11_0)
11
CUDA
+
-
Optimus
+
-