sorry to take so long to reply back.
Thanks for all the info,some great info. In all honestly my i7-975 at 4.2 (had it at 4.8 but ran warm)water cooled runs FSX great with slider maxed out with frames around 80 at carswell (KNFW). But my son wants to buy this computer. So I told him I would have to see how a SB cpu runs FSX. I know the SB cpus rock in games,but FSX is not a game per-say. I figured the best place to find info about FSX and SB is here at SOH.
The good folks over at toms and overclockers.net where I've been a member for years keep telling me I would have to go to a 2600k,2700k to match my 975 performance. But most don't run FSX. I asked about the Ivory bridge but many think the cpu are beginning to level off in performance with Intel.