Do I need a higher wattage PSU?

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Sep 28, 2014
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Keep in mind that I will be running stock for a good while till I can get my hands on proper cooling materials for OC. I currently have a Coolermaster V550w psu at Amazon. Should I go for a safer 650w for future OC? Here's my build atm with the 650w.

Tis rather apparent that my knowledge in PSUs aren't so keen, so thanks to anyone who assists!
 


Thanks! I had a similar feeling. However, is it not safer that I go 650 for future OC? Or will a 650w PSU degrade performance for a build that's running stock? I don't mind adding $10 for an extra 100w.