It runs at 4K on a Mac Pro. I saw one at the Carlsbad Apple store.
They had another monitor connected to a Mac Mini and it looked like ass. Why they didn't connect it to a laptop that can actually use it is beyond me. Apple seems to have lost the attention to detail they once had which is very concerning because that affects so many things.
Once I saw the stores were getting them in I canceled my online order and picked one up at the Fashion Valley store in San Diego. I have been running it for about 30 minutes. Stunning screen. It was a very un-Apple experience opening it up but the screen is just so great. I'm not as concerned about looks as some people but LG could have expended a little bit of effort making it look better and matching Apple gear and Apple should have required them to do that.
By the way the power button on my 12.9 iPad Pro has been sticking and I made a Genius bar appointment and they swapped it out for a brand new one in 5 minutes so at least they still have good support. Since their revenues are down I wonder if they will start cutting back on support. I installed the LG app for firmware updates etc. LG's web page for the monitor isn't very good. You click support and it goes to another page which you have to hunt down this monitor from. Why doesn't support go straight to a support page for this monitor?
I'm meandering I realize but I just got the monitor setup and am looking it over. Even with my bitching I haven't been this excited about a monitor since getting the original 27 inch Thunderbolt display. My laptop (15' Radeon 460) runs quite a bit hotter with the monitor connected. The screenshots below show temperature readings at idle with and without the monitor. Playing Civ 6 without the monitor the fans are almost never audible.
With the monitor the fans kick in quickly and some of the sensor temps exceed 200F. The side the monitor is connected to has significantly higher thunderbolt port temp. The power adapter plugged in does not generate the same high port temp. Hope this doesn't cause components to fail prematurely. As much as I like the 15' display it's hard to use after using the 5k monitor.
No monitor: With monitor connected. My laptop (15' Radeon 460) runs quite a bit hotter with the monitor connected. The screenshots below show temperature readings at idle with and without the monitor.
Playing Civ 6 without the monitor the fans are almost never audible. With the monitor the fans kick in quickly and some of the sensor temps exceed 200F. The side the monitor is connected to has significantly higher thunderbolt port temp. The power adapter plugged in does not generate the same high port temp. Hope this doesn't cause components to fail prematurely. As much as I like the 15' display it's hard to use after using the 5k monitor.
No monitor: With monitor connected. Mine has just been delivered (seems like most people are getting them today!) Agree with what's been said already that the screen really is stunning. You really do ignore the bezels and the design once your using it, the colours and clarity are fantastic. I was one of the folk worried about the performance with the 13 inch, and it's not as good as I'd like it to be. Mission control lags, resizing certain app windows causes a lot of stutter and 4k videos full in Chrome (no option in safari oddly) do lag and stutter if you do anything else on the machine at the same time. I've plugged a 15 inch into it (with the 455 card) and performance is smooth as butter. Mission control and animations experience no lag, 4k video works full screen whilst I'm doing other bits on the laptop screen, with no stutter or reductions.
The 13 inch doesn't do a terrible job, but it's not as smooth as I'd like It to be. Looking at iStatMenu, the CPU is being absolutely hammered when playing 4k video in Chrome, so this could be something that get's better with software and performance updates. Tinyboy for mac.
Only other observations as pointed out already, are that the MacBook (15') does get quite warm towards the top of the touch bar with the monitor plugged in, and also the monitor isn't very sturdy. I have a fairly crap and unsteady desk, but the monitor is wiggling a little as I type with my elbows rested on the desk. Going to have a play with it for a week or so, and see what I think. Mine has just been delivered (seems like most people are getting them today!) Agree with what's been said already that the screen really is stunning. You really do ignore the bezels and the design once your using it, the colours and clarity are fantastic. I was one of the folk worried about the performance with the 13 inch, and it's not as good as I'd like it to be.
Mission control lags, resizing certain app windows causes a lot of stutter and 4k videos full in Chrome (no option in safari oddly) do lag and stutter if you do anything else on the machine at the same time. I've plugged a 15 inch into it (with the 455 card) and performance is smooth as butter. Mission control and animations experience no lag, 4k video works full screen whilst I'm doing other bits on the laptop screen, with no stutter or reductions.
The 13 inch doesn't do a terrible job, but it's not as smooth as I'd like It to be. Looking at iStatMenu, the CPU is being absolutely hammered when playing 4k video in Chrome, so this could be something that get's better with software and performance updates. Only other observations as pointed out already, are that the MacBook (15') does get quite warm towards the top of the touch bar with the monitor plugged in, and also the monitor isn't very sturdy. I have a fairly crap and unsteady desk, but the monitor is wiggling a little as I type with my elbows rested on the desk. Going to have a play with it for a week or so, and see what I think. Click to expand.Current build of Safari has a bug which won't allow 4K to be selection on YouTube. I reported it to Apple and the representative said he didn't know why it was happening but recommend I submit a bug report to the engineers and he would do the same from a higher level.
So hopefully we get a fix for that too. There's a bunch of other bugs I'm finding which means I find myself switching to Chrome for certain websites more often. Something strange going on with HTML and site buttons and stuff.
Click to expand.Running in extended mode - using the cable that came with the monitor (I don't have another thunderbolt cable unfortunately to test). Working on it at the moment, and it's definitely not as bad as I was expecting, but the odd UI lag here and there (and the 4k video stutter in chrome) are just enough for me to think 'is this level of performance going to be good enough for the next 3/5 years?' I think it's worth getting the display and trying it, and if your happy with it's performance, huzzah! If not, return it and like you say, wait for the inevitable arrival of something better for you.
Running in extended mode - using the cable that came with the monitor (I don't have another thunderbolt cable unfortunately to test). Working on it at the moment, and it's definitely not as bad as I was expecting, but the odd UI lag here and there (and the 4k video stutter in chrome) are just enough for me to think 'is this level of performance going to be good enough for the next 3/5 years?' I think it's worth getting the display and trying it, and if your happy with it's performance, huzzah!
If not, return it and like you say, wait for the inevitable arrival of something better for you.