Yes the motherboard is a factor when OCing.
First of all some motherboards don't allow overclocking. The one you mentioned does allow overclock so no worries there. Next there are some technical stuff that could limit your overclocking. You could look up the results other people have obtained with that motherboard to have some idea about what you could expect.
Also remember that every component is different. You could have everything set exactly as another person and get a better or worse overclock