Hello all! Currently I have 4 open PCIE slots and 1000w of Power Supply wattage free. I'm looking to fill those 4 slots with a good hash / wattage ratio.

Cards I'm interested in are:
R9 Series (270, 280, 290) 7970 7990
Prefer more popular brands (MSI, Gigabyte, Asus, EVGA, etc)

Looking to pay with USD, prefer some feedback available for viewing. This is my first time buying on here but I've done a few deals on my notebook forums and this is my feedback: http://forum.notebookreview.com/marketplace-questions-member-feedback/696735-semigamer-feedback-thread.html

Feel free to message me on there for verification that SemiGamer is indeed my account.