Hi everyone! This is my first post on here I've always have enjoyed reading the forums and reviews and decided to become a member. Now I need to build a friend of mine who is into AUTOCAD. He came to me with a $500 budget and I'm sitting here scratching my head trying to put parts together. If you guys could help that would def take this headache away.The system would be built this week. I need everything but the OS keyboard mouse monitor. just the tower itself. This is where it gets tricky he needs 6gb ram and when i try to configure a system i always have to burn something to get something better. Just really frustrating any help at all I would appreciate it.