I use my ole MAC 5,1 running OS 10.10.5 for most of my work. I have a AMD RADEON HD 7950 Video card with 3072 VRAM. I have been using an DELL U3011 monitor for over a decade. I have replaced the power board twice and the CAT board once over all these years. It's died again. It's time for a new one. Can any one suggest a new GREAT 27-30 inch monitor with glorious color that will run on this machine that will make me happy as I am use to the great picture from the DELL U3011? I have done much research and many are saying stay away from DELL! their quality, customer service and warranty have taken a dive.