Looking at these, they look to perform well, look good too as they show off the naked PCB and i mean, who dosent love a naked PCB 
What are the downfalls of putting one on an R9 290?? Would I have to have some extra form of cooling for the VRM's?

What are the downfalls of putting one on an R9 290?? Would I have to have some extra form of cooling for the VRM's?