Maxwell GPU Surface Book (940M, GDDR5) and GeForce GT 650M SLI - video card comparison
Maxwell GPU Surface Book (940M, GDDR5)
GeForce GT 650M SLI
Architecture
Maxwell (2014−2018)
Kepler (2012−2018)
GPU code name
Surface Book
N13E-GE
Market segment
Laptop
Laptop
Release date
October 2015
March 2012
Boost clock speed
993 MHz
835 MHz
Core clock speed
954 MHz
790 MHz
Manufacturing process technology
28 nm
28 nm
Pipelines / CUDA cores
384
768
Memory type
GDDR5
GDDR5
Maximum RAM amount
1 GB
2x2 GB
Memory bus width
64 Bit
2x 128 Bit
Memory clock speed
5012 MHz
4000 MHz
Shared memory
-
-
DirectX
DirectX 12 (FL 11_0), Shader 5.0
11
CUDA
+
+
Optimus
+
+