my current cpu is an AMD athlon 64 3000+ (on an msi rs480 motherboard). the setup is having trouble playing 720p videos. would upgrading the ram from 1g to 2g help with this? or would i have to upgrade the processor/mobo combo? or is there some other problem that might be causing the video to slow down, become choppy at times and sometimes freeze and cause an error that requires VLC to be restarted? edit: would upgrading the video card solve the problem?