Yes, you are right about the RX580 being a 1080 card. We'll see how t runs the games i want to play and then I'll have to decide whether or not to upgrade. Congrats on your new monitor. I just got my Gigabyte 32" 1440 165hz a few months ago and i love the 32" screen.I purchased the Acer ED32OQR EDO Series 32" 1080p display from Wal-Mart as part of there Black Friday sale at $155 and here it is in display port at 165Hz paired with a RX 570 8Gb in 1080p Med settings with 144fps cap .. I think 1080p is more in line with an RX 580 my self and 1440p is more in line with an RX 5700 / XT .