SpeedFan is a freeware hardware monitoring software that can also change fan speeds according to system temperatures. It can read HD temperatures and S.M.A.R.T. values too. This latest version can change the FSB on some motherboards (like ABIT BP6, ECS K7S5A and ECS K7S6A) and adds support for almost every recent SiS chipset out there. This means you will be able to read hardware monitoring values with your ASUS P4S333 too