Don't be so stupid, dual 771 is not going to cut it nowadays.
When I open Word, I have to do it on my Opteron based server, 128 CPU's=512 cores of madness!
It's usually enough to boot Word, but sometimes when I type big words, strange things can happen.
I find at least 1Tb of RAM is usually enough to play one (two songs is a little too much) song in iTunes, so I generally just put that on repeat as well.
Oh and hot-swappable CPU's for the win!