Normally, xeon cpus require ecc ram, but the specs for each server board are different. Checkout some board specs at newegg; tyan and supermicro make server boards; each one has some different ram characteristics. You must be careful to use registered ram on some boards, which is much more selective as to which board it works on. If you're not using newegg, I would link a vender so we can see what ram is available. Your current ram is plain desktop non ecc, which doesn't work with server boards. If you want a better selection, I would sell the xeon and get a plain 1155 cpu.
What if I put the Xeon on an ASRock B75 Pro motherboard? The B75 Pro says it supports the Xeon chip and it also will take the RAM I think. Will there be any problems between the RAM and the CPU in that instance?
EDIT: Actually I just checked the G.Skill website and the ASRock B75 Pro isn't on the "qualified motherboard list" for my RAM. Maybe I should buy new RAM?