I have both, and coupled with a good payware aircraft and AI, you will need a super computer to run say 20fps.
I have a quad core (2.4) with 4gb ram, and a dedicated 300gb velociraptor, and the combination brings my system to a grinding ctd every time.
If you know how to achieve a stable overclock, it may prove very helpful.
Make sure you have a good rig, as it is very fps intense (You did not specify what you have).
Check this thread out for the best fsx settings (a must) :
http://www.simforums.com/forums/forum_posts.asp?TID=29041Good luck, and I hope you can find a way to enjoy the two masterpieces together.