Currently I am using an i5 4690k, GTX 970, and have a corsair CX600M for my PSU. According to this forum post http://www.tomshardware.com/forum/id-2547993/psu-tier-list.html , the CX600M should not be used for gaming. I am currently looking at the EVGA Supernova G2 750W (tier 1), good value atm.
Should I upgrade?