hmmm..so there are only two differences? they are integrated GPU and the possibility to unlock.
I think i dont need to spend $200 just for the purpose of oc, and moreover I already have 6870. so it doesnt matter if I choose 2600. Beside that, i have only 700w psu that 2 rail (30a each rail). i think it will blow my head if i choose 2600k. Im actually asking this for my uncle's son who was looking for the latest processor in a cost not much. So if i gived i choose, I'll choose a bulldozer which all know its more cheap.
thanks for your help.
btw five hours ago, me and my cousin had bought 2600 (Malay) for $ 294. we've tried looking for costa rica procie, but in my country (indonesia) it has limited.