I currently have and XFX 270x 2gb graphics card I was thinking of grabbing a Sapphire Radeon NITRO R9 380X 4GB was wondering if they would work together in a crossfire using the 270x for physics. The game I mostly play is Elder Scrolls online on a 42 in hd tv and am looking to improve my frame rate, Cant afford a 290x or 390x or a nvida card comparable with those. Thank you for any advice.