Hi and welcome.Yes your motherboard will support PCIE3.0 as long as your processor and the card do too. All three must support the standard for it to work. You can check it here : http://uk.gigabyte.com/products/product-page.aspx?pid=3978&dl=1#ovYou say that your motherboard supports the 3770K but do make sure that you have a BIOS that also supports the CPU.