yes, I know the 4690 is absolute garbage for VR, and you're on the 4670? Yes get the 8700. ~$375? No brainer.
(You'll go from something like your 7500 passmark score to a 16000) @5Ghz
yes, update your ram immediately. 16bg or 32 gb clocked or oc'd to 3200+
prob new mb needed?
no, on the video card. prices too high