Radeon R9 M390 and Radeon R9 M380 Mac Edition - video card comparison
Radeon R9 M390
Radeon R9 M380 Mac Edition
Architecture
GCN (2011−2017)
GCN 2.0 (2013−2017)
GPU code name
Pitcairn
Strato
Market segment
Laptop
Desktop
Release date
June 2015
May 2015
Bus support
PCIe 3.0
-
Interface
-
PCIe 3.0 x16
Boost clock speed
-
1021 MHz
Core clock speed
-
900 MHz
Floating-point performance
-
1,568 gflops
Manufacturing process technology
28 nm
28 nm
Number of transistors
5000 Million
2,080 million
Pipelines / CUDA cores
1024
768
Texture fill rate
-
49.01
Memory type
GDDR5
GDDR5
Maximum RAM amount
2 GB
2 GB
Memory bus width
256 Bit
128 Bit
Memory clock speed
-
6272 MHz
Memory bandwidth
-
100.4 GB/s
Shared memory
-
-
Display Connectors
-
No outputs
Eyefinity
1
-
DirectX
DirectX® 12
12 (12_0)
Mantle
+
-
OpenCL
Not Listed
2.0
OpenGL
4.4
4.6
Shader Model
-
6.3
Vulkan
-
1.2.131
AppAcceleration
-
-
DualGraphics
1
-
Enduro
-
-
FreeSync
1
-
HD3D
+
-
PowerTune
+
-
Switchable graphics
1
-
TrueAudio
-
-
ZeroCore
+
-