Radeon R9 M290X Crossfire and Radeon R9 M290X - video card comparison
Radeon R9 M290X Crossfire
Radeon R9 M290X
Architecture
GCN (2011−2017)
GCN (2011−2017)
GPU code name
Neptune CF
Neptune
Market segment
Laptop
Laptop
Release date
March 2014
January 2014
Bus support
-
PCIe 3.0 x16
Interface
-
PCIe 3.0 x16
Supplementary power connectors
-
None
Boost clock speed
900 MHz
900 MHz
Compute units
-
20
Core clock speed
850 MHz
850 MHz
Floating-point performance
-
2,304 gflops
Manufacturing process technology
28 nm
28 nm
Number of transistors
2x 2800 Million
2,800 million
Pipelines / CUDA cores
2560
1280
Power consumption (TDP)
200 Watt
100 Watt
Texture fill rate
-
72.00
Memory type
GDDR5
GDDR5
Maximum RAM amount
2x 4 GB
4 GB
Memory bus width
2x 256 Bit
256 Bit
Memory clock speed
4800 MHz
1200 MHz
Memory bandwidth
-
153.6 GB/s
Shared memory
-
-
Display Connectors
-
No outputs
Eyefinity
-
1
DirectX
12 (FL 11_1)
DirectX® 11
Mantle
-
+
OpenCL
-
Not Listed
OpenGL
-
4.4
Shader Model
-
5.1
AppAcceleration
-
-
DualGraphics
-
1
Enduro
-
-
FreeSync
-
1
HD3D
-
+
PowerTune
-
+
Switchable graphics
-
1
TrueAudio
-
-
ZeroCore
-
+