having trouble running a couple videos while other programs are running, they are chopping up, and freezing. I have replaced video card with best for the motherboard but am scared that i need a new processor also, which means upgrading the motherboard to one that also exepts pci express. i use cube cases so my options are limited to nothing meaning new computers are going to need to be purchased. i am trying to verify that this is what i need to do and that no one has any opinions on alternitive options.