So there is plenty of power left over even if I decide to OC the graphics card?
I am wondering how tight it will be. I don't want to stress out my PSU too much.
There is much headroom even if you OC the CPU & the GPU. For your added peace of mind, you can estimate the power consumption of your PC with the 7950 using this:http://extreme.outervision.com/psucalculatorlite.jsp