i use drivermax
http://www.innovative-sol.com/drivermax/ mainly for backing up my drivers, and after reinstall restoring them.
it also has a driver update feature.
you have to register with them, but its free.
then you can scan pc for outdated drivers.
as a free user, it will only let you download 2 drivers a day. but i dont really use this.
you would be better off going to the proper software support site anyway.
drivermax told me my graphics card driver was old and i went to the amd site instead of going through them.
but as other answer, if everything is working good, i dont change any, except for the graphics