Well, the seller lists them at the same price. E3-1230V2 = i5 3570K. If I can get a cheaper mobo for the Xeon, I may get the Xeon build instead
Basically, it's RM=$*3.3
I forgot to ask about the mobo :
So I should just get any mobo with 2xSATA3 and 4xSATA2, since any more than that, the performance would be reduced?
Get the 1230V2 if you're not going to overclock. For mobos, I like MSi and Gigabyte. AsRock and Asus are fine too. Just be sure to check if the board supports the 1230V2.
It's not that performance would be reduced. You want to use native ports for the best performance. Ports running off any other controllers have reduced performance.