Radeon R9 285 and GeForce GTX 660M - video card comparison
Passmark - benchmark score Radeon R9 285 vs GeForce GTX 660M
Radeon R9 285
6880
GeForce GTX 660M
1478
Radeon R9 285
GeForce GTX 660M
Architecture
GCN 3.0 (2014−2017)
Kepler (2012−2018)
GPU code name
Tonga
N13E-GE
Market segment
Desktop
Laptop
Release date
September 2014
March 2012
Bus support
-
PCI Express 2.0, PCI Express 3.0
Interface
PCIe 3.0 x16
MXM-B (3.0)
Supplementary power connectors
2x 6-pin
-
SLI options
-
+
Boost clock speed
-
950 MHz
Core clock speed
918 MHz
835 MHz
CUDA cores
-
384
Floating-point performance
3,290 gflops
729.6 gflops
Manufacturing process technology
28 nm
28 nm
Number of transistors
5,000 million
1,270 million
Pipelines / CUDA cores
1792
384
Power consumption (TDP)
190 Watt
50 Watt
Texture fill rate
102.8
30.4 billion/sec
Memory type
GDDR5
GDDR5
Maximum RAM amount
2 GB
2 GB
Memory bus width
256 Bit
128bit
Memory clock speed
5.5 GB/s
2000 MHz
Memory bandwidth
176.0 GB/s
64.0 GB/s
Shared memory
-
-
Display Connectors
2x DVI, 1x HDMI 1.4a, 1x DisplayPort 1.2
No outputs
HDMI
+
+
HDCP
-
+
Maximum VGA resolution
-
Up to 2048x1536
DirectX
12 (12_0)
12 API
CUDA
-
+
OpenCL
2.1
1.1
OpenGL
4.6
4.5
Shader Model
6.5
5.1
Vulkan
1.2.170
1.1.126
Optimus
-
+