Like I said if you have over $500 to spend on mew 560TI's then spend $50 to $75 more and get yourself a Sandy i5-2500K for $219 http://www.newegg.com/Product/Produc...82E16819115072
a motherboard for $129 http://www.newegg.com/Product/Produc...82E16813130583
8gigs of DDR1600 for $48 http://www.newegg.com/Product/Produc...82E16820104266
GTX 470 for $160 at evga B Stock http://www.evga.com/products/prodlist.asp?switch=20
You could get all that for around $556 ,then you want have to worry about bottle necking plus have two GTX 470'running in SLI. Then you will have one kick ass system.Most all of the sandy 2500k will do 4.4gig and some people are doing over 5gigs.but with that motherboard you can do a combo buy with a 2500K sandy and save another $20 and with that you could buy a CPU heatsink cooler.