The only specifically required components for this build are an ASRock Rack EP2C602 motherboard and Ivy Bridge-EP processors. Your case, ram, PSU, etc should have no bearing on your success. As noted below, the LGA 2011 socket supports both Sandy Bridge-EP (E5 v1) and Ivy Bridge-EP...
PCI configuration + Grafik card GX770 + yosemity 10.2 on ASUS Z9PE-D8 WS, E5-2680 v2
Update > post can be deleted. For anyone looking for the same: dart=0 has nothing to do with the lagging, it was a graphics issue.