Only recently with the arrival of the GTX 1080 has a single GPU been powerful enough to game at 4K and even then at times some tweaking is necessary for optimal gameplay. As impressive as the GTX 1080 is, Nvidia's latest Titan X boasts 40% more CUDA cores, making it all the more of an ally to 4K gamers.
You do software updates to get the most from favourite programs right? Updating a motherboard BIOS can in a timely manner is also critical. The guide to Flashing a Motherboard BIOS spells out the often complicated steps in plain english. PCSTATS Tips