I'd do what purgatory says, BUT, if the card has already been registered with EVGA and you only have 90 days warranty, I really wouldn't risk it TBH.
Ofcourse, you'll still need to keep the 285 - I presume your PSU is up to the job?
Ofcourse, you'll still need to keep the 285 - I presume your PSU is up to the job?