Radeon R9 290X and Radeon R9 M290X Crossfire - video card comparison
Radeon R9 290X
Radeon R9 M290X Crossfire
Architecture
GCN (2011−2017)
GCN (2011−2017)
GPU code name
Hawaii XT
Neptune CF
Market segment
Desktop
Laptop
Release date
October 2013
March 2014
Bus support
PCIe 3.0
-
Interface
PCIe 3.0 x16
-
Supplementary power connectors
1 x 6-pin + 1 x 8-pin
-
Boost clock speed
947 MHz
900 MHz
Core clock speed
-
850 MHz
Floating-point performance
5,632 gflops
-
Manufacturing process technology
28 nm
28 nm
Number of transistors
6,200 million
2x 2800 Million
Pipelines / CUDA cores
2816
2560
Power consumption (TDP)
250 Watt
200 Watt
Texture fill rate
176.0
-
Memory type
GDDR5
GDDR5
Maximum RAM amount
4 GB
2x 4 GB
Memory bus width
512 Bit
2x 256 Bit
Memory clock speed
1250 MHz
4800 MHz
Memory bandwidth
320 GB/s
-
Shared memory
-
-
Display Connectors
2x DVI, 1x HDMI, 1x DisplayPort
-
Eyefinity
+
-
HDMI
+
-
DisplayPort support
+
-
DirectX
DirectX® 12
12 (FL 11_1)
Mantle
-
-
OpenCL
2.0
-
OpenGL
4.6
-
Shader Model
6.3
-
Vulkan
+
-
AppAcceleration
+
-
CrossFire
1
-
DDMA audio
+
-
Enduro
-
-
FreeSync
1
-
HD3D
+
-
LiquidVR
1
-
PowerTune
-
-
TressFX
1
-
TrueAudio
+
-
UVD
+
-
ZeroCore
-
-