I just today step-up'd my 970 SSC to a 970 FTW (wanted the better heatsink). I almost went for the 980 ACX 2.0, but didn't want to drop the ~190 with x-mas shopping still to do.
Once I get my 970 FTW and register it, can I step-up that card to a 980 within 90 days since it's brand new from evga? Step-up a step-up card?