gigabyte z77 ds3h

Hi I installed OS X El Capitan on Gigabyte GA-H77-DS3H HD4000 Graphics shows 5MB VRAM, Graphics some times flickering when using chrome browser ,display port was VGA. Bois setting Graphics 1024MB allocated and VRAM 256.Already try to fix with different kext for HD4000, Please sugest any...

Hi I am totally new to building computer having only built 1 windows pc, I have been very interested in building myself a hackintosh due to the outrageous prices they are charging when I could build my own and better for less! that being said I have stripped my old shell (thermaltake Mozart tx)...