if you oc the cpu, I would recommand the x3210, it use 8 multi in stead 9, but since xeon is the server cpu, it seems take less voltage.
mine oc 3.2 GHZ by 1.200v in bios (1.136 v on prime 95)
Why would a lower multiplier be better?
And you have a good chip, but there are also G0 Q6600s that will do that. (Just rare).