Ive got a Asus GTX980ti Matrix driving my 55" 4K monitor. I'd like to set up my 2560x1600 monitor to watch streams, browse the forums, etc while I game on the 4K monitor. Nothing very graphically demanding but I don't want to sacrifice any of the 980ti's power away from the 4K monitor. I don't see running anything on the 2560 x 1600 more demanding than TWITCH or YT. Any recommendations for a small GPU for driving the 2560 x 1600 monitor?