Yes, it would max out FSX. The only problem is a constant supply of liquid nitrogen would be needed to keep it at 5.5ghz.
And yes it would run youtube in HD. Most computers that are less than 5 years old can do that...
It's amazing how fast computers progress. Not sure if in one to two years something will be faster (unless overclocked). A three year old Q6600 overclocked to 5ghz under liquid nitrogen is still faster than a Core i7 975. Of course the Q6600 wouldn't last very long at them speeds, and probably wouldn't be completely stable (and an i7 overclocked would murder it.)

Last edited by Slotback on Tue May 04, 2010 9:45 pm, edited 1 time in total.