Flight Simulator X. Any tips on speeding up the frame rate?

I have Flight simulator X and I also downloaded the latest patch for it too and yet I still have to play at medium to high settings for good realistic frame rate. What computer are they using to have everything on max and still have it smooth. Must be testing it over at NASA. Anyone have any suggestions? Heres my computer specs. I am able to play HL2: Episode Two on max graphics, Crysis on everything High for XP, COD4 maxed out and all those games run perfect. Whats the deal with Flight Simulator? I know they have a lot to fill, but if Crysis can do it, I think Microsoft has some patch work to do. Please let me know, your tips and suggestions will be greatly appreciated.

Mother board EVGA 680i SLI
E6600 Core 2 Duo CPU
EVGA 8800GT Superclocked
Corsair XMS2 2GB DDR2-800 4-4-4-12
OCZ GamerXStream 700w PSU
Windows XP

Yeah I ws impressed too when I installed the first patch on what a difference it made, but now 8 monthes later even with me 8800GT, I still have to keep everything on low to medium with nice frame rate. Thats good to know that its more CPU dependent. I will keep that in mind. Thanks

Oh thats it????? Piece of cake. Here I come ultra High graphics Flight Simulator X.

p.s. Mrmez, whats the story behind your picture?

yes..i know maibe the game asks too much on very high, but if you want it you can get it. I don't have the most turbocharged computer but i managed to increase fps in one week from 15-20 to 80-100fps. here is what i did.
1. Overclocked cpu amd phenom x4 9950BE from stock 2.62 GHz/core to 3.18 Ghz/core. I trully don't recomend to overclock a amd cpu unless you know what you are doing !!! (the increase of fps was not noticed)
2. Move the frame limiter in fps limit to unlimited. ( fps reached around 30)
3. Disable light bloom.
4. Buyed anoter 4GB ddr2 800MHz (total 8GB).
5. POWER OPTIONS AND CUSTOMIZE MINIMUM CPU TO 100% !!!!! AND ONE EYE ON TEMPS FOR STOCK COOLING....now all cores will run at 3.18GHz, there will be no speed drops , means that multiplier will be at maximum all times.
6. Raised resolution to 1680x1050 32bit.
7. All setings to high.

All the above give me the pleasure of playing this game.
Specs: AMD 9950BE (OC 3.18 GHz); 4x2GB DDR2 A-data X-treme edition 1066+
Asus M3A78-T motherboard ; Power color ATI 4850 GDDR3 (stock speeds) ; 2x500 GB Seagate HDD's in RAID 0 ; Huntkey PSU 600 W.
I will reply few days later with crossfirex performance of 2X4850 in FSX (and a new Huntkey X7 900W PSU)

FSX stock frame rate extension (in game shift+z) , i didn't use fraps because it tends to drop a little the framerate.
i use DX9 for the simple reason that i have some strange small artifacts in DX10.