According to this review, it can't maintain 30 fps at 1024x768 very high. Notice the Zotac AMP edition 700/2000/1600 clocked card averages under 30 fps in the gpu timedemo. And this is using NV's Crysis driver that gains a little fps but has IQ issues with the optimizations. http://www.pclabs.gen.tr/2007/10/29/crysis-benchmark-wi...
Ask the question in a few weeks, driver 169.9 just got released and Crytek are also patching the retail version in teh game in the next week or 2.
I think then when SLI works, which atm is hardly does nothing, and its more optimized to take advantage of CPU cores, which atm it isn't, it should yield much better performance.
I doubt you could run very high settings, but with an 8800GT don't expect too. High settings on Crysis on DX9 mode is still graphically FAR better then any other game available!
Vyer high and high settings have almost no visual difference but a big performance difference, same with DX10 and DX9, hardly no visual improvement but tons of performance by running DX9.
I'm going to heavily overclock my 8800GT with HR-03GT to as high as it possibly goes, but ill still be running high settings in DX9 even though I got vista available to me, because simply put its the smartest choice.
Make sure you force VSYNC in the control panel too, I don't think Crysis has an option for it?
If I had to choose options for quality:
Low Settings < Medium Settings < Higher Screen Res < High Settings < AA < DX10
Based on what gives an average of 30FPS+, this game doesn't seem to need a lot of FPS to rock.
I think between medium and high, higher resolution is more important since it adds a lot more small details into it.