i am dual booting windows xp pro and vista ultimate 64bit.
i started out with hardware much earlier than you , kid.
why i choose to have 4GB ram on 32bit OS?
i have nothing but money to burn.
If you had money to burn, you'd be using 8GB RAM, wouldn't still have the 8800 Ultra when it isn't the best card out - though was for a long spell - and would have the X7040. Plus, your X3350 wouldn't be running at stock, as you'd have a complex watercooling system in place.
Using a server chip at home...I have to laugh. There's having money to burn in order to get slightly better hardware and there's having money to burn in order to get equal hardware for more money.