I am having a Windows XP Pro system. I use the software to convert some movies file. I am trying to convert AVI files to DVD. The cpu usage goes to 100% at the time of conversion. I am using a Dual Core processor. So I expect that the usage must not go to 100%. I am having only 1GB ram in the system. Does that is causing performance break. The page file on the same is around 1GB. I think the system requires more ram.