Possable power supply issues?

[SuperBond]

So straight to it i have a thermaltake smart 550, fx8350(stock speed), gtx 760 sc, and adata xpg v2 ram... i really would like to overclock and for that i know i need a new psu but my nvidia display driver really loves to crash... like alot.. i have the newest driver and it crashes 3/4 times when i launch watch dogs or evga oc scanner x type application. the real intense stuff. itll do it even when launching an older game like need for speed shift, but not as much... is this an issue with my power supply already being to close to not enough? 

[Ivyk]

550W should be more than enough to run your setup even with an overclock.

[Syntaxvgm]

That is enough by 150+ watts. I wouldn't rule out the power supply as the problem though. 

[SuperBond]

thanks guys! however, i actually am less sure now because after some more research the gpu boost 2.0 tells the mem and gpu core speed to fluxate which can cause poor performance especially when a computer goes from low intensity programs, like the desktop, to a very intense program and the gpu cant always compensate especially with an overclock aperantly... so theres a setting to lock the frequencies... we'll see if the problem reappears 

[Kevin Fletcher]

If you keep having the issue I'd also suggest running memtest86. I was having nvidia drivers crash as well as random other issues and it turned out to be my ram. It's surprising what some bad ram can do.