DDR3 Memory

Hello Again.
 
I wanted to ask another question about the Zedboard.  This one is particular to the DDR3 Memory spec'd out for the Zedboard.  We are currently using the Zedboard and want to make a custom version of it.  Looking at the DDR3 spec'd out it is the Micron, MT41K128M16JT-125:K which is hard to find in stock with anyone.  Is there a qualified 2nd source for the memory that is easier to obtain and would not change any of the parameters in firmware/software side?
 
Thanks
Gary