I am assuming rev 2 refers to the R2.0 version. I would go for R2.0 as well (at least that's what I'm getting for my FX 6300). From what I know (forgive me if I'm wrong), the R2.0 version only, makes it to Asus ROG class (albeit in the LOWEST TIER). So if you are looking for even a minute shred of overclocking hope, go for R2.0.