Hello, my names Greg.. recently I bought a new DYNEX 350 watt power supply for around $95.00 canadian and noticed that my computer seems to lag or is much slower. My old power supply died this past Friday night, and with that power supply I didn't have such lag problems.. could it be possible this new power supply is lagging my system?

Perhaps your new <and old> power supply isn't capable of handling all of your compoments? Or maybe your new ps is just defected. Your motherboard may not work as well with your power supply, check the cables and wiring in the case. On the other hand, a power supply actually shouldn't create too many lagging problems. (like not even there)