Your first build is better as obsidian86 said. I would change out the PSU to a better quality PSU for either build. Here is a build I would recommend for $977.90, which may or may not be too much over your current budget.
Okay thanks... Yea my budget is about 800-900$ Because I also need a monitor... Would I loose performance if I got a different processor that isent as good as the phenom II and got a better case and power supply? Got any idea for a good computer case thats fairly cheap?