All p67 and z68 boards have the intel controller with 4 sata2 ports + 2 sata3 ports, which PERFORMS ALL THE SAME.
Then, motherboard manufacturers add another 2+ ports, usually sata3 using third party controllers, marvel, asmedia, etc. - these never perform as good as the intel one, and if not really needed (i.e. for an esata backup disk), can/should be disabled.