Why is it that EVERY time a game pushes a system someone say's it's because 'It's not coded very well'??!!! No, it's because the game will eat up every ounce of your computers performance and spit it back at you! And 18 FPS is pretty good. But the screen's native res is high and you will need a more powerful computer to run the game at high settings at that resolution.
Yeah, this ^ Crysis in fact appears to be VERY well coded. It runs and looks fantastic on a 32-core Nvidia parts...roughly 2005 class hardware. The fact that you can crank settings up even further doesn't mean it's poorly coded. I think Crytek 2.0 is the most advanced engine, at least until ID Tech 5 hits.
Anyway the 5750 looks like a solid mid range card. 720 of AMD's cores (AMD's aren't comparable to Nvidia's, which are worth roughly 4 to 1) puts it at close to half of AMD's high end GPU. It's actually a bit worse than the best notebook GPUs now though, although not by a huge amount.