^+1... The system isn't cost effective, plus they list the 902 for the case but build with a 900 based on the pictures.
If you want to build your own PC, we are here to help.
1) Read through this sticky of mine to walk you through building one... http://www.tomshardware.com/forum/274745-31-step-step-guide-building
2) Read through this sticky of mine to get ideas on possible builds and pricing (I recommend the i7 860 build)... http://www.tomshardware.com/forum/269162-31-recommended-builds-usage
3) Post your proposed build here or in a new post for review and feedback...
Good luck with your build!!!