According to pricewatch, you can get a new Q6600 for $120, a GTX 450 for $117, and 8GB DDR2 for $76. That's $313, which leaves you $87 for the board. Not bad, but you could get something newer for about the same amount:
Yo homey, where do you work? Just curious, I worked for Sprint over the summer and saw all just one of their regional data centers. It was epic, thousands of fiber lines, millions of $'s of equipment, tons of goodies. Not much storage more router based equip, but I did see a single data closet filled with hdd's, prolly 20+ in just one cab.