Hi every one, so i built my pc a few months ago, and i got a ASUS Sabertooth P67 for 70$ off of craigslist because it is rev 1. I knew i would not even need 4 sata ports, so it was a steal for me. I would like to know if i i'm still under 5 year warranty without a receipt? And would it just so happen to be possible to get the rev 3.0 version?