Want to upgrade from GTX 660 Ti

Alexmaster350

Reputable
Aug 6, 2014
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4,510
My PC at the moment is nearly two years old and I want to hopefully upgrade my graphics card. I have a gtx 660 ti and am considering a gtx 770 or even possibly a gtx 970 but I'm worried my CPU and PSU will not be powerful enough for them.

My CPU is an i5 3470
My PSU is a Corsair CX500

I'm just looking for advice on what things I need to change and what graphics card I could change to etc.
Thank you