as far as i know,sapphire is the slowest to return the rma card,due to lots of gc rmaed,mine rma 280x n 270x took 7-8 weeks but still ok,best i think is asus,3-4 weeks oredi got...my most unpleasant rma is from gigabyte for gtx 770,took 5 weeks to get back but after test the gc no display,so need to resent back n paid again, 7 weeks later got back,total 12 weeks cant use the card,very frustrated...

its not necessarily 7 weeks,maybe if your luck better it will take less than that...i remember the seller said during the time i rmaed my gc it took longer coz many people rma coz the gc overheat due to mining...