Well Steve from Gamers Nexus said it was meh. To me it is something that is there if you either have a chip that is a bit meh or you do not want to mess about optimising it finding what voltages work best. PBO is never going to get you big gains from what I understand. Waste of time if you want big results, assuming your chip is up to it. Manual overclock FTWOK so I found this blog guide as I was going to fart around turning on things like PBO. This is what needs more clarity from guys on here if people are using it, can they tell the difference or is it just meh?
I'm hoping that the latest BIOS updates can get somewhere with what looks like a pointless setting judging by GN findings back in July.