Total: $495 before mail in rebates
What do you think of this build? Your friend wont be able to game the crap out of it but he/she should be able to stick most games on high-medium, and some on max! I do recomend throwing in a new (sata) optical drives, and with how cheap they are I would just go, and get one now!
970 vs i5 2500K http://www.anandtech.com/bench/Product/186?vs=288
Only difference between i5 2500K and 2400 is the stock clock (and unlocked but doesn't really matter for benching purposes) to substitute for this variable, the 970 was put in place for the 970 since it's also a higher stock clock version of the 955.