I am currently running a system with a 650 and wish to change to a 970 althogh i dont know if i will need to upgrade my 650watt power suply. My full system specs are bellow any help would be good althogh i would like to not push my power suply to far if it is fine to keep it.
Disk drives... 250GB Samsung 840 EVO Solid State Drive 3X Seagate 500GB 7200RPM Hard Disk - 6Gbps 24x SATA DVD+/-RW Drive NZXT Sentry Mesh Fan-Controller
The card and PSU... Corsair Ultra Low Noise 600W PSU, Windows 8.1 Pro 64 bit NVIDIA GeForce GTX 650 1024MB Graphics Card
I'm pretty sure you can but to be totally sure about it check how much amperage the 970 requires and than how much amperage your power supply is able to output on the 12V. If the value of the videocard is below the one defined by the spec of your power supply the upgrade is safe. To be honest I think you could do it blindly without even thinking about it but is better to be sure. Have fun!
Yes, it will be fine. More than fine. That's a CX600 and it does 46A on the 12V rail while GTX 970's off the top of my head do like 200-250W under gaming load or in other words ~17-21A.
It's not of the highest quality power supply but it will work just fine.