There is:
A) Asrock z87M OC Formula
http://www.pccasegear.com/index.php?main_page=product_info&products_id=24325&cPath=1491
B) Asrock z87 Extreme9
http://www.pccasegear.com/index.php?main_page=product_info&products_id=24413&cPath=1491
Here is a comparison of the 2. http://www.asrock.com/mb/compare.asp?SelectedModel=Z87M+OC+Formula&SelectedModel=Z87+Extreme9%2Fac
Please give reasons. Thank you.
A) Asrock z87M OC Formula
http://www.pccasegear.com/index.php?main_page=product_info&products_id=24325&cPath=1491
B) Asrock z87 Extreme9
http://www.pccasegear.com/index.php?main_page=product_info&products_id=24413&cPath=1491
Here is a comparison of the 2. http://www.asrock.com/mb/compare.asp?SelectedModel=Z87M+OC+Formula&SelectedModel=Z87+Extreme9%2Fac
Please give reasons. Thank you.