I found this recently, and I think it is pretty good.
There are many myths about tweaking FSX. Pre SP1 via post SP1 . . . etc, etc
This site seems to be on the same page with my thoughts on most of the settings:http://www.simforums.com/forums/forum_p ... ?TID=29041
There is TONS of information on that page - we should all discuss our findings!
Intel i7 950 @ 3.9 GHz
MSI 560 Ti Twin Frozr x2 SLI @ 950 mhz
6 GB of Corsair memory (timings unknown atm)
H50 CPU cooler
3dMark11 P7800 at stock speed, P8643