They would all technically be compatible, but I don't see the point of 64gb of RAM.
If it's for server purposes, then you should be getting a Xeon processor instead.
Does Caviar Black even have a 4TB unit? :P
I'm not sure what you'll need that much storage for but I suggest getting 2 pcs of 2TB Caviar Greens instead, then a 256-512gb SSD.
Thanks for replying, for the 4tb hard drive I meant to say RE instead of black
Also the point for 64gb of ram is for show and for making 3d hardcore games