Built a similar machine on Dell with 9GB RAM, a 24' monitor, keyboard, mouse...and it was $1520 with 2 year warranty. I can't seem to get anywhere near that building my own with the following:
i7 processor (860/920) Radeon 5870 6GB of tri-channel RAM
Any advice here or should I just go with a Dell?
More aboutbuild dell
Post the specs of the Dell system you built. The reason why most people here like to build their own computers is because you get to buy quality parts individually instead of no-brand, cheap parts that Dell uses.