Radeon RX 580 Mobile and GeForce GTX 660 - video card comparison
Radeon RX 580 Mobile
GeForce GTX 660
Architecture
Polaris (2016−2019)
Kepler (2012−2018)
GPU code name
Polaris
GK106
Market segment
Laptop
Desktop
Release date
April 2017
September 2012
Bus support
-
PCI Express 3.0
Interface
MXM-B (3.0)
PCIe 3.0 x16
Supplementary power connectors
-
One 6-pin
SLI options
-
+
Boost clock speed
1077 MHz
1033 MHz
Core clock speed
1000 MHz
980 MHz
CUDA cores
-
960
Floating-point performance
4,963 gflops
1,981 gflops
Manufacturing process technology
14 nm
28 nm
Number of transistors
5,700 million
2,540 million
Pipelines / CUDA cores
2304
960
Power consumption (TDP)
100 Watt
140 Watt
Texture fill rate
155.1
78.4 billion/sec
Memory type
GDDR5
GDDR5
Maximum RAM amount
8 GB
2 GB
Memory bus width
256 Bit
192-bit GDDR5
Memory clock speed
8000 MHz
6.0 GB/s
Memory bandwidth
256.0 GB/s
144.2 GB/s
Shared memory
-
-
Display Connectors
No outputs
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
2.0
1.2
OpenGL
4.6
4.3
Shader Model
6.4
5.1
Vulkan
1.2.131
1.1.126
3D Blu-Ray
-
+
3D Gaming
-
+
3D Vision
-
+