however my personal experience with noctua nh-d14 is that it doesnt only cool your processor much better then any other cooler on the market but it cools your whole system as well, a little. About the PSU, I put 1000w so u can install another 780ti after few months, year maybe, and overclock them without any power issues. Otherwise if u decide to expand and overclock not only the gpus - that 750 wont handle for sure + this PSU is the same price like the best imo 850w seasonic platinum + it has 10 years warranty