EpicStarman :
Lastly, why do you need a kilowatt PSU? Do you plan for future upgrades? If so I would keep it, however if not switch it for a 800W at the most.
The Radeon R9s are complete power hogs, that's for sure, but most NVIDIA cards are moving in the opposite direction and getting far more energy efficient than they used to be. Even for future upgrades unless you're going to be running triple SLI or some other crazy configuration then 1KW is warranted but for most uses you won't need it.