New
#91
$300.00 for a Q6600?! i5 750's are less than $200.00.
Yes, you can install from an upgrade dvd. There are posts how to do it here, when I get back from the market I'll see if I can dig it up.
"Worst case?", obviously, that would be having to re-install your OS, but as I said, that's unlikely, even if you change chipsets from AMD to Intel, because 7 is just amazing about this stuff.