Hi I am new to the forum. I have been reading up and came to a decision that I would like to run a gtx 970. Currently, I have an i5 2400, and that will probably be the max CPU/GPU combo. I currently have a a 750ti and 400w evga power supply. My question is that I would like to upgrade my power supply as the 970 requires a 500w and I have been looking at the corsair VS550. That is the low end model I understand but is there a need to get a CX550 or higher? I am kinda on a budget so I don't want to spend an astronomical amount. Thanks in advance and let me know if you need any more info!