GeForce GTX 660M Mac Edition and Radeon Sky 700 - video card comparison
GeForce GTX 660M Mac Edition
Radeon Sky 700
Architecture
Kepler (2012−2018)
GCN 1.0 (2012−2020)
GPU code name
GK107
Tahiti
Market segment
Desktop
Desktop
Release date
April 2013
March 2013
Bus support
-
PCIe 3.0
Interface
MXM-B (3.0)
PCIe 3.0 x16
Supplementary power connectors
None
1x 8-pin
Core clock speed
950 MHz
900 MHz
Floating-point performance
729.6 gflops
3,226 gflops
Manufacturing process technology
28 nm
28 nm
Number of transistors
1,270 million
4,313 million
Pipelines / CUDA cores
384
1792
Power consumption (TDP)
50 Watt
225 Watt
Texture fill rate
30.40
100.8
Memory type
GDDR5
GDDR5
Maximum RAM amount
512 MB
6 GB
Memory bus width
128 Bit
384 Bit
Memory clock speed
5000 MHz
5500 MHz
Memory bandwidth
80 GB/s
176 GB/s
Display Connectors
No outputs
1x DisplayPort
DisplayPort count
-
1
Dual-link DVI support
-
1
DirectX
12 (11_0)
12 (11_1)
CUDA
3.0
-
OpenCL
1.2
1.2
OpenGL
4.6
4.6
Shader Model
5.1
5.1
Vulkan
1.1.126
1.2.131