The "Budget" AsRock MoBo pairing with the most expensive CPU and most expensive memory seems an odd pairing.
Be that as it may, you can compare them here:http://www.newegg.com/Product/Productcompare.aspx?Submit=ENE&N=100006519%2050001944%2040000280&IsNodeId=1&srchInDesc=Z77&page=1&bop=And&ActiveSearchResult=True&CompareItemList=280|13-157-296
THG formatting screws with the url
(Hit quote on my message and then copy / paste the entire url into your browser)
The two boards have some very significant differences. Main differences are the more expensive one buys you a 2nd PCI-E 3.0 slot, SLI capable, better audio, more USB 3 / less USB 2 and "Gold" caps.