I need to run rhel5.x or rhel6.x on asus z87 + i74770 platform.
contact red hat sales and they can tell you if the hardware is supported
RHEL 6.5 is NOT free
-- single desktop install
the standard 1 year REQUIRED support contract is $299 / year
with a $49/ year SELF SUPPORT - you can not call redhat for help !
-- server install
anywhere from $349 to over $8600 / year
or use CentOS 6.4 ( a FREE rebuild of RHEL )
but then YOU are your own tech support