Its a short game (long tech demo) but over all enjoyable, IMO. I would say if you have a reasonable computer/vid card and can get the game cheap to give it a try.
Download the free demo it has some of the best play of the game...and will give an indication if your comp will play it well (the frozen level of the game will take many more resources/play much worse and is not included in the demo; so be aware that if your machine will barely play the demo you should expect problems later (it can help to adjust the graphics settings to low).
Crysis Demo Download Live Countdown October 26th 2007 PC EA Games
What are your processer and vid card? I was able to play it on a AMD 3700 San Diego @ 2.7 ghz and a 7800GT, XP Pro OS (give the Demo a try).
Enjoy!