Radeon RX 580 and GeForce GTX 660M Mac Edition - video card comparison
Radeon RX 580
GeForce GTX 660M Mac Edition
Architecture
Polaris (2016−2019)
Kepler (2012−2018)
GPU code name
Polaris 20
GK107
Market segment
Desktop
Desktop
Release date
April 2017
April 2013
Interface
PCIe 3.0 x16
MXM-B (3.0)
Supplementary power connectors
1x 8-pin
None
Boost clock speed
1340 MHz
-
Core clock speed
1257 MHz
950 MHz
Floating-point performance
6,175 gflops
729.6 gflops
Manufacturing process technology
14 nm
28 nm
Number of transistors
5,700 million
1,270 million
Pipelines / CUDA cores
2304
384
Power consumption (TDP)
185 Watt
50 Watt
Texture fill rate
193.0
30.40
Memory type
GDDR5
GDDR5
Maximum RAM amount
8 GB
512 MB
Memory bus width
256 Bit
128 Bit
Memory clock speed
8000 MHz
5000 MHz
Memory bandwidth
256.0 GB/s
80 GB/s
Display Connectors
1x HDMI, 3x DisplayPort
No outputs
HDMI
+
-
DirectX
12 (12_0)
12 (11_0)
CUDA
-
3.0
OpenCL
2.0
1.2
OpenGL
4.6
4.6
Shader Model
6.4
5.1
Vulkan
1.2.131
1.1.126