I have a custom desktop computer delivered to me in December 2014 and while I presently have it at the maker's shop for a refill of coolant, was wondering if now is a good time to upgrade my gpu's to GTX 1080's? My present GPU's are 2 GTX TITAN Black 6GB GDDR5 3D Vision Surround w/phys x in SLI. Can I 4K with these new 1080's and will these also support VR? I have an X99, 8 core chip set in the 22nm Haswell class, LGA 2011 v3 with an i7-5960X 8 core CPU. Thanks for any advice. .