Radeon R9 M290X and Radeon R9 M290X Mac Edition - video card comparison
Radeon R9 M290X
Radeon R9 M290X Mac Edition
Architecture
GCN (2011−2017)
GCN 1.0 (2012−2020)
GPU code name
Neptune
Pitcairn
Market segment
Laptop
Desktop
Release date
January 2014
November 2014
Bus support
PCIe 3.0 x16
-
Interface
PCIe 3.0 x16
PCIe 3.0 x16
Supplementary power connectors
None
None
Boost clock speed
900 MHz
975 MHz
Compute units
20
-
Core clock speed
850 MHz
-
Floating-point performance
2,304 gflops
-
Manufacturing process technology
28 nm
28 nm
Number of transistors
2,800 million
2,800 million
Pipelines / CUDA cores
1280
1024
Power consumption (TDP)
100 Watt
80 Watt
Texture fill rate
72.00
62.40
Memory type
GDDR5
GDDR5
Maximum RAM amount
4 GB
2 GB
Memory bus width
256 Bit
256 Bit
Memory clock speed
1200 MHz
5.5 GB/s
Memory bandwidth
153.6 GB/s
174.7 GB/s
Shared memory
-
-
Display Connectors
No outputs
No outputs
Eyefinity
1
-
DirectX
DirectX® 11
12 (11_1)
Mantle
+
-
OpenCL
Not Listed
1.2
OpenGL
4.4
4.6
Shader Model
5.1
5.1
Vulkan
-
1.2
AppAcceleration
-
-
DualGraphics
1
-
Enduro
-
-
FreeSync
1
-
HD3D
+
-
PowerTune
+
-
Switchable graphics
1
-
TrueAudio
-
-
ZeroCore
+
-