MB: http://www.newegg.com/Product/Produc...82E16813128485

CPU: http://www.newegg.com/Product/Produc...82E16819103851

PSU: http://www.newegg.com/Product/Produc...82E16817182072

Memory: http://www.newegg.com/Product/Produc...82E16820227583

Right around $400 there. I think 850W is enough to drive those 2 5870s at stock speeds. Someone chime in if I am wrong.