How well will either the ASUS RX 460 or ASUS RX 470 GPU work with the INTEL Core i7 3770 processor in a Dell Optiplex 7010 MT computer (4 core, 8 thread, 3.4 GHZ, 8Mb Smart Cache)? Will there be a bottleneck at the processor? Also, what PSU will fit in this computer case and power these GPU's? The RX 470 needs a separate power cable to power the GPU and the 460 might too from what I have been reading. The MT is a minitower and the largest case for this computer. It's not all that small really. The CPU is probably already the best one for this motherboard (Q77 chipset and FCLGA 1155 socket) from what I have read.