[Solved]What's the number of memory controllers in Kepler?

The data bus in kepler is 384 bit, and each memory controller should be 64 bit wide,
Hence the number of memory controllers should be 384/64 = 6.
Is my calculation correct?

Solved:
See GK110 Whitepaper. https://www.nvidia.com/content/PDF/kepler/NVIDIA-Kepler-GK110-Architecture-Whitepaper.pdf

cross posted:

http://stackoverflow.com/questions/37769721/what-is-the-number-of-memory-controllers-in-kepler

Thanks.