GeForce GTX 660M Mac Edition and Radeon X1600 - video card comparison
GeForce GTX 660M Mac Edition
Radeon X1600
Architecture
Kepler (2012−2018)
Ultra-Threaded SE
GPU code name
GK107
RV516
Market segment
Desktop
Desktop
Release date
April 2013
2007
Interface
MXM-B (3.0)
PCIe 1.0 x16
Supplementary power connectors
None
None
Core clock speed
950 MHz
635 MHz
Floating-point performance
729.6 gflops
-
Manufacturing process technology
28 nm
90 nm
Number of transistors
1,270 million
105 million
Pipelines / CUDA cores
384
-
Power consumption (TDP)
50 Watt
27 Watt
Texture fill rate
30.40
2.540
Memory type
GDDR5
DDR2
Maximum RAM amount
512 MB
512 MB
Memory bus width
128 Bit
128 Bit
Memory clock speed
5000 MHz
800 MBps
Memory bandwidth
80 GB/s
12.8 GB/s
Display Connectors
No outputs
2x DVI, 1x S-Video
DirectX
12 (11_0)
9.0c (9_3)
CUDA
3.0
-
OpenCL
1.2
N/A
OpenGL
4.6
2.1
Shader Model
5.1
3.0
Vulkan
1.1.126
N/A