New motherboard

It's come to that time again, where I take apart my gaming computer and put new things in it.  I've been having some trouble with my computer restarting and my hard drive shutting off for a while now, and I've been wanting a new CPU/Motherboard for even longer.  This would be the first brand new motherboard I've installed in my own computer for the past 10 years.  Every one has been second hand or found in the trash since I started going out with C.  Now that we are getting married in August I'm pretty sure I will not be able to afford a new computer anytime soon.  Actually the computer I found in the trash was years ahead of the one I had been using, and someone had just thrown it out.

So here's what I bought: AMD FX-8120 8-core @ 3.1GHz and an MSi 970-g46 motherboard.  Now I'm quite aware that this setup will never be a hackintosh, and I'm ok with that.  I just spent 3 months fiddling with a hackintosh triple boot, and that's time enough to know I'd rather have a real apple computer than keep fiddling with it.  Now that I think about it, this started happening when I installed my new video card, but that can't be what's causing the problems since this power supply was driving 2 video cards in another computer only 1 year ago.

Well I'm going to run some tests with eXtreme Power Supply Calculator to see if i'm still off with my power calculations, but as I see I should only need a 450W supply for the mobo, CPU, RAM, vid card, hdd, and dvd drive I'm using.