AMD merely intended on games being playable @ 1080p with the 7850k. It's not really meant to be a great 1080p gaming solution. You will need a +$100 video card at the very least for an improvement.
Yeah I was thinking buying a GPU probably a 7770 .-. but is XFX FX-775A-ZNP4 Radeon HD 7750 Core Edition 1GB 128-bit GDDR5 PCI Express 3.0 x16 HDCP Ready Video Card