Recently I upgraded my whole system except my psu and gpu. I currently have an i7-4790k, msi z97 gaming 7 mobo, 1866 Kingston hyperx 8gb (two modules), AMD HD 7850 2gb vram, 1tb HDD, DVD-RW drive, corsair 500r case,750w rosewill bronze certified PSU. I want to upgrade to a GTX 970 even with the...