Radeon R9 M390 Mac Edition and Radeon R9 M290X Mac Edition - video card comparison
Radeon R9 M390 Mac Edition
Radeon R9 M290X Mac Edition
Architecture
GCN 1.0 (2012−2020)
GCN 1.0 (2012−2020)
GPU code name
Pitcairn
Pitcairn
Market segment
Desktop
Desktop
Release date
May 2015
November 2014
Interface
PCIe 3.0 x16
PCIe 3.0 x16
Supplementary power connectors
None
None
Boost clock speed
-
975 MHz
Core clock speed
958 MHz
-
Manufacturing process technology
28 nm
28 nm
Number of transistors
2,800 million
2,800 million
Pipelines / CUDA cores
1024
1024
Power consumption (TDP)
80 Watt
80 Watt
Texture fill rate
61.31
62.40
Memory type
GDDR5
GDDR5
Maximum RAM amount
2 GB
2 GB
Memory bus width
256 Bit
256 Bit
Memory clock speed
5.5 GB/s
5.5 GB/s
Memory bandwidth
174.7 GB/s
174.7 GB/s
Display Connectors
No outputs
No outputs
DirectX
12 (11_1)
12 (11_1)
OpenCL
1.2
1.2
OpenGL
4.6
4.6
Shader Model
5.1
5.1
Vulkan
1.2
1.2