I have an ancient Compaq with a Athlon 64 Processor 3400+ on a Asus Salmon motherboard. I'm thinking to just replace the motherboard and processor with an i7 975x and a Gigabyte motherboard. I'm sure that this is 100% naive of me but is that a reasonable approach? It seems like it would be cheaper than springing for a totally new system. Also, I noticed there were some nice systems available on eBay. (http://cgi.ebay.com/Desktop-Gaming-PC-Intel-Core-i7-975...) I'm wondering if it would be just as good to buy it on eBay as it would be to build my own - even if it means scrapping my old Presario and starting over.
I selected the processor because I run both video and intense database applications. I would love your thoughts.
I'd scrap the old presario anyways. Even if you go with a new MOBO/CPU approach, it probably won't fit right, i.e. the ports won't line up. I'd price out a system with the components that you want from newegg and compare that to the ebay system(s). If building your own is cheaper, go with that and vice-versa if a system on ebay is cheaper.
Thanks for the awesome advise. I got a sweet i7-975x for less than $2K with 24gigs for RAM, 1TB hard drive and a TV tuner with a bonus of $158 bing bucks. Yep - I do mean 24gigs. I appreciate the advise!