I recently upgraded my system to a XFX 9800 GT but haven't been able to run games without them becoming pixelated, distorted and consequentially crashing. I presume the culprit is my ancient and weak 400W Dynex PSU. What is is the best+cheapest low wattage PSU available on the market today, I'm in Canada so I can only use the .ca variation of tigerdirect or newegg. My system has a AMD 5600 dual core, 4GB OCZ 1066 RAM, 2 SATA 7200rpm drives and one optical drive so it doesn't have to be a high wattage, I also don't intend to be SLIing. Thanks for the help.