A single R9 390X provides ample performance at 4K with a mix of medium/high settings, but I wanted to see if AMD had improved ... another article looking at 1920x1080 and 2560x1440.

We have been powering through our AMD Radeon R9 ... Compare this to 1920x1080 (Full HD, or 1080p) which is rendering 124,416,000, or 124 million pixels per second - the 4K Surround system is ...