GeForce GTX 660 and Radeon R9 M290X - video card comparison
Passmark - benchmark score GeForce GTX 660 vs Radeon R9 M290X
GeForce GTX 660
4119
Radeon R9 M290X
3360
GeForce GTX 660
Radeon R9 M290X
Architecture
Kepler (2012−2018)
GCN (2011−2017)
GPU code name
GK106
Neptune
Market segment
Desktop
Laptop
Release date
September 2012
January 2014
Bus support
PCI Express 3.0
PCIe 3.0 x16
Interface
PCIe 3.0 x16
PCIe 3.0 x16
Supplementary power connectors
One 6-pin
None
SLI options
+
-
Boost clock speed
1033 MHz
900 MHz
Compute units
-
20
Core clock speed
980 MHz
850 MHz
CUDA cores
960
-
Floating-point performance
1,981 gflops
2,304 gflops
Manufacturing process technology
28 nm
28 nm
Number of transistors
2,540 million
2,800 million
Pipelines / CUDA cores
960
1280
Power consumption (TDP)
140 Watt
100 Watt
Texture fill rate
78.4 billion/sec
72.00
Memory type
GDDR5
GDDR5
Maximum RAM amount
2 GB
4 GB
Memory bus width
192-bit GDDR5
256 Bit
Memory clock speed
6.0 GB/s
1200 MHz
Memory bandwidth
144.2 GB/s
153.6 GB/s
Shared memory
-
-
Display Connectors
One Dual Link DVI-I, One Dual Link DVI-D, One HDMI, One DisplayPort
No outputs
Multi monitor support
4 displays
-
Eyefinity
-
1
HDMI
+
-
HDCP
+
-
Maximum VGA resolution
2048x1536
-
Audio input for HDMI
Internal
-
DirectX
12 (11_0)
DirectX® 11
CUDA
+
-
Mantle
-
+
OpenCL
1.2
Not Listed
OpenGL
4.3
4.4
Shader Model
5.1
5.1
Vulkan
1.1.126
-
3D Blu-Ray
+
-
3D Gaming
+
-
3D Vision
+
-
AppAcceleration
-
-
DualGraphics
-
1
Enduro
-
-
FreeSync
-
1
HD3D
-
+
PowerTune
-
+
Switchable graphics
-
1
TrueAudio
-
-
ZeroCore
-
+