Radeon R9 M390 and GeForce GT 755M SLI - video card comparison
Radeon R9 M390
GeForce GT 755M SLI
Architecture
GCN (2011−2017)
Kepler (2012−2018)
GPU code name
Pitcairn
N14P-?
Market segment
Laptop
Laptop
Release date
June 2015
November 2013
Bus support
PCIe 3.0
-
Core clock speed
-
980 MHz
Manufacturing process technology
28 nm
28 nm
Number of transistors
5000 Million
2x 1300 Million
Pipelines / CUDA cores
1024
768
Power consumption (TDP)
-
2x ~50 Watt
Memory type
GDDR5
GDDR5
Maximum RAM amount
2 GB
2x 2 GB
Memory bus width
256 Bit
2x 128 Bit
Memory clock speed
-
5400 MHz
Shared memory
-
-
Eyefinity
1
-
DirectX
DirectX® 12
11
CUDA
-
+
Mantle
+
-
OpenCL
Not Listed
-
OpenGL
4.4
-
AppAcceleration
-
-
DualGraphics
1
-
Enduro
-
-
FreeSync
1
-
HD3D
+
-
PowerTune
+
-
Switchable graphics
1
-
TrueAudio
-
-
ZeroCore
+
-