A:AnswerQuite a bit I'm afraid.
Gamers Nexus will have several videos more than you are willing to watch on the data you are inquiring about.
Everything from FPS performance comparisons to thermals.
A:AnswerYes but you might need an electrician to put a 30 amp circuit next to your system as the 2000W PSU you'll need would likely trip your breaker. You may also want to check with your local utility company to find out the surcharge for going into the next tier of power usage, as you'll likely see a leap in your monthly electric bill.