Radeon R9 M390 and GeForce GTX 580M - video card comparison
Radeon R9 M390
GeForce GTX 580M
Architecture
GCN (2011−2017)
Fermi (2010−2014)
GPU code name
Pitcairn
N12E-GTX2
Market segment
Laptop
Laptop
Release date
June 2015
June 2011
Bus support
PCIe 3.0
PCI-E 2.0
Interface
-
MXM-B (3.0)
Supplementary power connectors
-
None
SLI options
-
+
Core clock speed
-
620 MHz
CUDA cores
-
384
Floating-point performance
-
952.3 gflops
Manufacturing process technology
28 nm
40 nm
Number of transistors
5000 Million
1,950 million
Pipelines / CUDA cores
1024
384
Power consumption (TDP)
-
100 Watt
Texture fill rate
-
39.7 billion/sec
Memory type
GDDR5
GDDR5
Maximum RAM amount
2 GB
2 MB
Memory bus width
256 Bit
256 Bit
Memory clock speed
-
1500 MHz
Memory bandwidth
-
96.0 GB/s
Shared memory
-
-
Display Connectors
-
No outputs
Eyefinity
1
-
DirectX
DirectX® 12
12 API
CUDA
-
+
Mantle
+
-
OpenCL
Not Listed
1.1
OpenGL
4.4
4.5
Shader Model
-
5.1
Vulkan
-
N/A
3D Blu-Ray
-
+
3D Gaming
-
+
AppAcceleration
-
-
DualGraphics
1
-
Enduro
-
-
FreeSync
1
-
HD3D
+
-
Optimus
-
+
PowerTune
+
-
Switchable graphics
1
-
TrueAudio
-
-
ZeroCore
+
-