R9 290X is better than R9 280X which is better than R9 270X. Or more fully:
290X > 290 > 280X > 285 > 280 > 270X
yes but this two are with DUAL-X w/BOOST & OC and the price is very little
between them so if the 280 is better then why the price is basically the same, i dont know which one to get???