Usually for 3400g is necessary to update the bios. In my opinion you can ask to the vendor which bios version is installed because anyone provide the Motheboard already updated. To know which version is needed, you can go to the gigabyte site and check it. :) for other info write a comment.
@@pradityaromansyah No bro it will run only for watever it is clocked with. U can try over clocking it if you have higher specs of ram. I'm using 8gb single ram on the slot. Try using 4gb two slots or 8gb two slots to get maximum of vram from the board. However u might need to overclock it