Radeon R9 M390X and GeForce GT 755M SLI - video card comparison
Radeon R9 M390X
GeForce GT 755M SLI
Architecture
GCN 3 (2014−2016)
Kepler (2012−2018)
GPU code name
Amethyst (XT) / Tonga
N14P-?
Market segment
Laptop
Laptop
Release date
June 2015
November 2013
Bus support
PCIe 3.0
-
Interface
PCIe 3.0 x16
-
Supplementary power connectors
None
-
Core clock speed
723 MHz
980 MHz
Floating-point performance
2,961 gflops
-
Manufacturing process technology
28 nm
28 nm
Number of transistors
5,000 million
2x 1300 Million
Pipelines / CUDA cores
2048
768
Power consumption (TDP)
100 Watt
2x ~50 Watt
Texture fill rate
92.54
-
Memory type
GDDR5
GDDR5
Maximum RAM amount
4 GB
2x 2 GB
Memory bus width
256 Bit
2x 128 Bit
Memory clock speed
-
5400 MHz
Memory bandwidth
160.0 GB/s
-
Shared memory
-
-
Display Connectors
No outputs
-
Eyefinity
1
-
DirectX
DirectX® 12
11
CUDA
-
+
Mantle
+
-
OpenCL
Not Listed
-
OpenGL
4.4
-
Shader Model
6.3
-
Vulkan
+
-
AppAcceleration
-
-
DualGraphics
1
-
Enduro
-
-
FreeSync
1
-
HD3D
+
-
PowerTune
+
-
Switchable graphics
1
-
TrueAudio
-
-
ZeroCore
+
-