Ohh you already have a 500W?
well... i'll still say it's not enough as a gaming PSU.
It's a small upgrade which is a shame when spending that among of money.
if a were you i'll go for something gold validated. your 500W is properly bronze.
I found this PSU: Corsair Professional 650W 80+ Gold Certified Semi-Modular ATX Power Supply (HX650) - PCPartPicker
It's gold validated, it's modular, It's 650
W and it's made by corsair.
It's on sale for 80 bucks at newegg
---------- Post added at 02:19 AM ---------- Previous post was at 02:17 AM ----------
It's normal price is a little over 120 bucks. you safe a lot