Well I have been playing around with my new i7 rig for almost 2 days now, countless amount of apps I needed to install etc
After a couple bugs (Asus supplies some off thier own software with the ATi 4870x2 which wouldn't allow my computer to play anything in DX10) it is running very well. I so have tryied Crysis (64bit DX10), FSX (DX10) and Assassins Creed (DX10) and all three run supperb.
Keep in mind I have no overclocking or tweaking at all yet.
Crysis I was running 1600x1200 8xAA and all very high settings (the highest allowable and only possible with DX10 or a hack) and performance was smooooth (and beautiful), but at times I did get a couple stutters, knocking it back to 4x removed those. The odd thing though I was getting some flicking square sort of textures in the clouds, haven't looking further into that yet. I later ran Crysis though a Component cable to my 720P Plasma and it looked no where near as good.
FSX frankly is a system resource whore, I dont think it uses resources very well and can pull my system down with everything in ulrta high settings/ full autogen/ full ai vehicles and bad weather. Though it does still stay at a playable level and doesnt last very long as you change direction or fly through the clouds. I was happy when I got DX10 working it did improve visuals and performance the same time.
Assassins creed....... Everything the highest I could possibly make it and not even a hint of the slightest frame drop in all circumstances, looks nice too.
(Sorry no 3dmark 06)