Go with the i5 build if you want to have the fastest system and better upgrade potential. The card is up to you. If the R9-280 is out of reach with the i5, the R9-270 can easily be OC'd to 270X numbers.
Go with the i5 build if you want to have the fastest system and better upgrade potential. The card is up to you. If the R9-280 is out of reach with the i5, the R9-270 can easily be OC'd to 270X numbers.