With the below system on medium settings(no AA) in Crysis i get between 40-80fps but later in the game with the larger fight scenes i need all low settings just to keep it around 30. If your GPU is not getting enough power then it will perform terrible and it obviously won't perform in a graphically intensive game like Crysis. My advice is to get a PSU that can power your computer properly. Now if that doesn't solve the problem remember that Crysis is the most demanding game out today so most computers can't run it well.
The difference in Crysis between medium and low settings is much less then the quality of smooth gameplay. Increasing the resolution to 1024x768 or 1280x1024 and running at all low setting with no AA should look and run better then 800x600 at medium settings. Personally I love good graphics too but just like when Oblivion first came out it was much more enjoyable to drop all the settings (except resolution) to play at around 60fps then to marvel at how pretty my slide show looked.
Ok so it looks like im where i should be. Seen an article where a 8800 GTS got very high/high settings at a low but playable frames. I dont see any difference at any different resolution or more frames than 30, but i do see a difference when i change the quality.
Heh im wandering if the PS3 can play crysis, and how long it will take for a console to be able to play crysis.