also why would you buy it prebuilt if you know how to build them?
The short answer is money
In my current situration, Greece has a better credit rateing then me
Besides I have been looking and found that for what I payed for my last upgrade one can't purchase anywhere near that level of features today.
And, unlike last time I also have to upgrade my OS (I think it time for me to put Windows98 - orginal edition - to its final rest) and the case. So adding all that up makes a custom build out of my range.
However, What I can do is purchase a refurbished computer, and with some odds and ends laying around can come up with something that should be better then what I have now.
HP DC7800 2000 MHz Intel Core 2 Duo Memory: 2GB DDR2
HP DC7800 2300 MHz Intel Core 2 Duo Memory: 2GB DDR2
HP DC7800 2300MHz Intel Core 2 Duo Memory: 4.GB DDR2
HP DC7900 Intel Core 2 Duo 3000 MHz Memory: 1.00G BDDR2
All with Windows 7 Home Professional
Plus since I do have parts laying around that I can add. The only thing I'll have to buy is a video capture card since my has a AGP interface and these computers (along with others I have seen) don't have that interface anymore.