whats the difference between p8z77-m and asrock z77 pro3?

i personally am considering a setup, what about this spec?

i5-3570k
asus P8Z77M
4gb value ram x2
corsair TX650M
cooler master Hyper 612S
Shinobi Window White

parts utilized from previous built :
gigabyte gtx580 1.5gb
samsung 500gb spinpoint 7200rpm
samsung optical drive

This post has been edited by Ken.shin-: Aug 24 2012, 03:13 AM