GeForce GTX 660M and Radeon RX 560X Mobile - video card comparison
GeForce GTX 660M
Radeon RX 560X Mobile
Architecture
Kepler (2012−2018)
Polaris (2016−2019)
GPU code name
N13E-GE
Polaris 11
Market segment
Laptop
Laptop
Release date
March 2012
January 2017
Bus support
PCI Express 2.0, PCI Express 3.0
-
Interface
MXM-B (3.0)
MXM-B (3.0)
SLI options
+
-
Boost clock speed
950 MHz
1275 MHz
Core clock speed
835 MHz
1172 MHz
CUDA cores
384
-
Floating-point performance
729.6 gflops
2,611 gflops
Manufacturing process technology
28 nm
14 nm
Number of transistors
1,270 million
3,000 million
Pipelines / CUDA cores
384
1024
Power consumption (TDP)
50 Watt
60-80 Watt
Texture fill rate
30.4 billion/sec
81.60
Memory type
GDDR5
GDDR5
Maximum RAM amount
2 GB
4 GB
Memory bus width
128bit
128 Bit
Memory clock speed
2000 MHz
6000 MHz
Memory bandwidth
64.0 GB/s
92.8 GB/s
Shared memory
-
-
Display Connectors
No outputs
No outputs
HDMI
+
-
HDCP
+
-
Maximum VGA resolution
Up to 2048x1536
-
DirectX
12 API
12 (12_0)
CUDA
+
-
OpenCL
1.1
2.0
OpenGL
4.5
4.6
Shader Model
5.1
6.4
Vulkan
1.1.126
1.2.131
FreeSync
-
+
Optimus
+
-