http://www.nvidia.co.uk/object/win8-win7-winvista-64bit-313.95-beta-driver-uk.html

Here's a link to the latest beta drivers which include Crysis 3 optimisation.
Judging from the Alpha performance you'd want these drivers installed

:/

http://secure.gamesas.com/forums/viewtopic.php?f=58&t=56260

Judging from the Alpha performance you'd want these drivers installed
Despite the fact there is another topic, I wish to reply to this.
Do. Not. Judge Crysis 3 Alpha's performance, it was unoptimized and there were no drivers to improve performace. It was Alpha-level code and Alpha-level performance.

oops :p