Sajin1. If you're looking to get all the fps out of your card it's good. The higher you go the more fps you will get.2. Higher power limit vbios that could help with overclocking the card higher.
SajinPush the card until it starts to crash then back off a bit until it's stable. That would be what I would suggest.
SajinIf your clock is being restricted because of the power limit then yes.
SajinNo problem.