They are the same RAM. Just get GIGABYTE GA-Z68X-UD3H-B3 LGA 1155 Intel Z68 HDMI SATA 6Gb/s USB 3.0 ATX Intel Motherboard
PSU depends on what GPU in SLI you want to get. Cooler get CM Hyper 212
. Case get CM HAF 912
as it fits the longest graphics cards in the world w/ CFX or SLI and best cooling for the price.