Radeon R9 M290X Crossfire and GeForce GTX 660 - video card comparison
Radeon R9 M290X Crossfire
GeForce GTX 660
Architecture
GCN (2011−2017)
Kepler (2012−2018)
GPU code name
Neptune CF
GK106
Market segment
Laptop
Desktop
Release date
March 2014
September 2012
Bus support
-
PCI Express 3.0
Interface
-
PCIe 3.0 x16
Supplementary power connectors
-
One 6-pin
SLI options
-
+
Boost clock speed
900 MHz
1033 MHz
Core clock speed
850 MHz
980 MHz
CUDA cores
-
960
Floating-point performance
-
1,981 gflops
Manufacturing process technology
28 nm
28 nm
Number of transistors
2x 2800 Million
2,540 million
Pipelines / CUDA cores
2560
960
Power consumption (TDP)
200 Watt
140 Watt
Texture fill rate
-
78.4 billion/sec
Memory type
GDDR5
GDDR5
Maximum RAM amount
2x 4 GB
2 GB
Memory bus width
2x 256 Bit
192-bit GDDR5
Memory clock speed
4800 MHz
6.0 GB/s
Memory bandwidth
-
144.2 GB/s
Shared memory
-
-
Display Connectors
-
One Dual Link DVI-I, One Dual Link DVI-D, One HDMI, One DisplayPort
Multi monitor support
-
4 displays
HDMI
-
+
HDCP
-
+
Maximum VGA resolution
-
2048x1536
Audio input for HDMI
-
Internal
DirectX
12 (FL 11_1)
12 (11_0)
CUDA
-
+
OpenCL
-
1.2
OpenGL
-
4.3
Shader Model
-
5.1
Vulkan
-
1.1.126
3D Blu-Ray
-
+
3D Gaming
-
+
3D Vision
-
+