Dulaj :
what is the best motherboad Gigabyte GA-Z87-HD3 or MSI B85-G43 Gaming
Those are 2 very different boards! The Gigabyte is a full size ATX board which is capable of OC'ing while the MSI is a budget priced Micro-ATX form factor board which does not OC.
What CPU do you plan to get?
Yogi