If you bought an LG Ultrawide monitor 29UM65, the "65" is a little bit of a lower quality than the "95." The "65" does not come with a Thunderbolt Port. Even with HDMI, everything will be stretched out. I have a late 2013 retina 15" MBP. You are going to have to buy two things to get the 2560 x 1080 resolution on the 65. To use the 29" 65, You have to buy: (1) A "DUAL-LINK" DVI-D to Thunderbolt Adapter. It's like $99 on the Apple store. It was the one used with the 30" monitors. Expensive, but it also has a usb attached to it because it takes up a USB port also (more power). There are cheaper brands, in know, but I wanted Apple quality. The only store in LA that actually had one was the Apple store at the Grove in LA/Beverly area (or online). Warning: the Apple Thunderbolt to DVI adapter that is $29 is NOT "Dual" and will not work/fix the resolution. Frys Electronics also has the Apple Dual-Link cable. (2) A "DUAL-LINK" DVI Cable. Best buy doesn't carry them, only single link. I had to go to FRYs. I found a 6' cable in a bag for $12. They looked better quality than the ones (bent) for $22. The $54 Monster at Frys had more pins surrounding the single line part, and probably wasn't right. Once plugged in, the Display (scaled section) in the System Preferences will finally show 2560 x 1080. NO MORE STRETCHING!!! Finally, I did this all in one day because I wanted it "now." While the LG screen is not an Apple screen by any means, it was only $500 out the door at Best Buy with the added 3 year no-questions-asked warranty. So I saved $500 off of the Apple 27" monitor. However, If I was really doing hardcore graphics or something, I probably would bite the bullet and go with the Apple Screen. UPDATE: Since the 29 inch monitor was $500, plus I had to buy a $125 worth of cables to go with it, I decided to return it and get an LG Ultrawide 34" 95. It was $999. But it is 4K and works perfectly with Retina MBP. It also has Thunderbolt. So, if you want to spend $500 on the 29", you need the Dual-Link cables as mentioned. This 34" Ultrawide 4k monitor is SWEET!!!!