I'm pretty much building an entirely new build, but I want to reuse the psu from my last build. The psu is an XFX 550W. I'm going to be getting a gtx 980 ti & a i7 4790k. Will that psu be okay? Let me know if you need to know any other specs... I have 2 ssd's & 2 hdd's as well. I'd really appreciate any help. Thanks!