Radeon R9 285 and GeForce GTX 660 - video card comparison
Passmark - benchmark score Radeon R9 285 vs GeForce GTX 660
Radeon R9 285
6880
GeForce GTX 660
4119
Radeon R9 285
GeForce GTX 660
Architecture
GCN 3.0 (2014−2017)
Kepler (2012−2018)
GPU code name
Tonga
GK106
Market segment
Desktop
Desktop
Release date
September 2014
September 2012
Bus support
-
PCI Express 3.0
Interface
PCIe 3.0 x16
PCIe 3.0 x16
Supplementary power connectors
2x 6-pin
One 6-pin
SLI options
-
+
Boost clock speed
-
1033 MHz
Core clock speed
918 MHz
980 MHz
CUDA cores
-
960
Floating-point performance
3,290 gflops
1,981 gflops
Manufacturing process technology
28 nm
28 nm
Number of transistors
5,000 million
2,540 million
Pipelines / CUDA cores
1792
960
Power consumption (TDP)
190 Watt
140 Watt
Texture fill rate
102.8
78.4 billion/sec
Memory type
GDDR5
GDDR5
Maximum RAM amount
2 GB
2 GB
Memory bus width
256 Bit
192-bit GDDR5
Memory clock speed
5.5 GB/s
6.0 GB/s
Memory bandwidth
176.0 GB/s
144.2 GB/s
Display Connectors
2x DVI, 1x HDMI 1.4a, 1x DisplayPort 1.2
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 (12_0)
12 (11_0)
CUDA
-
+
OpenCL
2.1
1.2
OpenGL
4.6
4.3
Shader Model
6.5
5.1
Vulkan
1.2.170
1.1.126
3D Blu-Ray
-
+
3D Gaming
-
+
3D Vision
-
+