I have a cheap 600 watt power supply by Ark technology and since upgrading to a GTX 660 I have noticed a lag and an odd sound coming from the PSU weirdly I can stop the fan on the PSU and it still makes the sound while Gaming but when I minimize the game it goes away so I think My PSU is not enough to power all my system overclocked with all my fans and Graphics Card ?
also would I notice better performance getting an 80+ PSU ?
also would I notice better performance getting an 80+ PSU ?