Maxwell GPU Surface Book and Radeon R5 M255 - video card comparison
Maxwell GPU Surface Book
Radeon R5 M255
Architecture
Maxwell (2014−2018)
GCN (2011−2017)
GPU code name
Surface Book
Topaz Pro / Sun
Market segment
Laptop
Laptop
Release date
October 2015
May 2014
Bus support
-
PCIe 3.0 x8
Interface
-
PCIe 3.0 x8
Boost clock speed
993 MHz
940 MHz
Compute units
-
5
Core clock speed
954 MHz
940 MHz
Floating-point performance
-
721.9 gflops
Manufacturing process technology
28 nm
28 nm
Number of transistors
-
1,550 million
Pipelines / CUDA cores
384
320
Texture fill rate
-
22.56
Memory type
GDDR5
DDR3
Maximum RAM amount
1 GB
4 GB
Memory bus width
64 Bit
64 Bit
Memory clock speed
5012 MHz
1000 MHz
Memory bandwidth
-
16 GB/s
Shared memory
-
-
Display Connectors
-
No outputs
Eyefinity
-
+
DirectX
12 (FL 11_0)
DirectX® 11
CUDA
+
-
Mantle
-
+
OpenCL
-
Not Listed
OpenGL
-
4.4
Shader Model
-
6.3
AppAcceleration
-
+
DualGraphics
-
1
Enduro
-
-
HD3D
-
+
Optimus
+
-
PowerTune
-
+
Switchable graphics
-
1
TrueAudio
-
-
ZeroCore
-
+