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I've had this Late 2015 iMac for a little over 6 months and it hasn't given me any trouble. I don't use the internal HDD at all. My TB enclosure has the 500GB SSD and a 1TB HDD. The screen is beautiful (to me). I don't notice any tint or light bleeding through.

I have not updated OS X beyond 10.11.3 so I have not experienced any of the random freezing discussed on this forum. Hopefully this one works great for the next 3 years until I can pass it on to family.
 
Actually very happy.
The ONLY iMac I've had ANY issues with is a 2012 i7 1TB Fusion where the HDD part of the Fusion setup just died out of nowhere.
I have the latest model and it is the 2nd best machine I've owned behind my Mac Pro and best computer display I've ever laid eyes on.
 
I deeply regret having swapped out my late 2012 maxed out iMac for the new 5K Retina. The OS itself is as it should be but interfacing with other computers on our network is buggy, and Final Cut Pro X has been EXTREMELY laggy and very buggy. I crash every few minutes. I also have 5 open cases with Apple Support over issues with this computer. My advice, avoid the 5K iMac until next year when all these problems are resolved. Another strange issue is sometimes upon bootup, the keyboard is not recognized.

In FCPX, our timelines are about 4 hours long with 6 to 8 layers of media. We have six 8TB GRAID drives running on two separate Thunderbolt chains.
 
I agree about the gaming problem , it's not the mac , it's the crappy app store which is hopeless

Bought my Dad a tricked out iMac 27 5k and the most demanding game he can find that he likes is let's golf 2..

Otherwise for everything else it's amazing
 
I deeply regret having swapped out my late 2012 maxed out iMac for the new 5K Retina....Final Cut Pro X has been EXTREMELY laggy and very buggy. I crash every few minutes....My advice, avoid the 5K iMac until next year when all these problems are resolved...In FCPX, our timelines are about 4 hours long with 6 to 8 layers of media. We have six 8TB GRAID drives running on two separate Thunderbolt chains.

Sorry about your difficulties, but there is no fundamental problem with the 5K iMac or FCPX. I have 64 TB of Thunderbolt storage on my 2015 iMac and have an FCPX library containing 8,085 clips (181 hr of 1080p and 4K material), comprising 4.75 TB total size -- all in a single event.

I usually have shorter timelines, however prior versions of FCPX were tested with a timeline up to 588 *days* long, and with up to 1,000 layers on a Mac Pro: http://www.fcp.co/final-cut-pro/new...w-mac-pro-and-final-cut-pro-x-to-their-limits

Here is a complete walkthrough of a seven-camera professional event that was recently edited on FCPX. They shot one terabyte per day using Sony field production cameras. FCPX was used to edit a four-hour, seven-camera timeline, of which they had three different versions open:

I have had problems with FCPX crashing due to corrupted video files, which you will often have when aggregating a huge amount of content from various sources. In this case it was damaged MTS which someone had extracted from the AVCHD bundle and cut up with a 3rd-party clipping tool. When I isolated and removed those, the crashes ceased.

I also had some Event Browser performance problems from bare MTS files. I removed these and re-wrapped them with EditReady, then re-imported them and the problems went away: http://www.divergentmedia.com/editready

There is no basis to say avoid the 5K iMac until next year, nor any basis to believe that all problems will be resolved then.

However it might be a good idea for anyone planning on large video projects to wait until the next iMac 27 update -- not because the current one is flawed but because the next one will be faster and video (esp. H264 4K) is very demanding.

Apple just released FCPX 10.3 which supposedly has some further performance updates but I can't test it until I am finished with my current project.
 
I love my 5k iMac but it has really bad image retention after just 2 years of use.

So right now it's being repaired and I haven't had it for 1 week

:(
 
Earlier this year, June, I bought my first Mac, an iMac 27", with 2TB, 16GB memory.
Thus far I'm happy with it, and trying to use it more, and use my Windows computer (Z600 Workstation, by HP), less.

At some stage I need to get into loading Windows on it, and knowing how to switch between the two, properly.
 
Love my iMac too, it is my first Mac, had it since June 2015, Retina 5K 27-inch 3TB fusion drive, 4GHz Intel i7, AMD Radeon R9 M290X 2048 MB. Maybe could buy some more memory for it, I have 8GB, would also like to put Windows on it via Parallels or similar.

Altogether has been a very positive experience. In the recent earthquakes we were away from home and all I was worried about was is my iMac safe? It was.
 
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I have a late 2015 27-inch 5K iMac with Sierra and it is a powerhouse. I keep them for a long time, so it is loaded up with a 4 GHz i7, after-market 32 GB of ram, AMD R9 M395X and a 3TB Fusion. I run Windows 10 on Parallels and it smokes. Games work well, but maybe not as well on a loaded Windows machine, from what I am told. It runs Photoshop perfect and video editing is very smooth on Sierra. I am still using my early 2008 17-inch MacBook Pro with El Capitan, and an early 2009 24-inch iMac with El Capitan for just general stuff. I have made some repairs to the 17-inch and the 24-inch over the years, but they keep on working. I like the fact that they are easier to work on. Helps to keep repair costs low, but these newer models are getting a bit harder. May eventually move away from the desktops and go to MacBook Pro's with an external monitor and keyboard, but for now, my Macs are awesome and would not change them out for anything.
 
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I have a late 2015 27-inch 5K iMac with Sierra and it is a powerhouse. I keep them for a long time, so it is loaded up with a 4 GHz i7, after-market 32 GB of ram, AMD R9 M395X and a 3TB Fusion. I run Windows 10 on Parallels and it smokes. Games work well, but maybe not as well on a loaded Windows machine, from what I am told. It runs Photoshop perfect and video editing is very smooth on Sierra. I am still using my early 2008 17-inch MacBook Pro with El Capitan, and an early 2009 24-inch iMac with El Capitan for just general stuff. I have made some repairs to the 17-inch and the 24-inch over the years, but they keep on working. I like the fact that they are easier to work on. Helps to keep repair costs low, but these newer models are getting a bit harder. May eventually move away from the desktops and go to MacBook Pro's with an external monitor and keyboard, but for now, my Macs are awesome and would not change them out for anything.

Can you run this https://marco.org/rmbp-irtest.html for 10 minutes and report back on if you see any image retention?

I am curious to see the results as it sounds like you run the device at heavy loads.
 
I bought a late 2015 27" Mac a few weeks ago, this replaced a 2011 27" iMac. I bought mine refurb'd from Apple.com. I was lucky to snag a 27" iMac with m395 and 1TB SSD. The machine came with the magic keyboard 2. After using it for a little while I found it to be to noisy, I much prefer the very quiet Apple full sized wired keyboard. Still one of the best keyboards available, IMO. Really like the magic trackpad 2 with force click. The computer runs really cool to the touch even after several hours of use. A great computer that should last be many years.
 
I bought a late 2015 27" Mac a few weeks ago, this replaced a 2011 27" iMac. I bought mine refurb'd from Apple.com. I was lucky to snag a 27" iMac with m395 and 1TB SSD. The machine came with the magic keyboard 2. After using it for a little while I found it to be to noisy, I much prefer the very quiet Apple full sized wired keyboard. Still one of the best keyboards available, IMO. Really like the magic trackpad 2 with force click. The computer runs really cool to the touch even after several hours of use. A great computer that should last be many years.

you should get apple care if you dont have it imo
 
Thought I may as well chime in on this thread. I've had every iMac since the first Intel one in 2006 and couldn't be happier. A few issues here and there mainly relating to screens but Apple Support has always come though when needed. The 5K display still amazes me every day. Looking forward to the 2017 iMac with Thunderbolt 3 so I can connect two more 5K displays to it (shame Apple doesn't appear to be making their own 5K Cinema Display, the LG will have to do).
 
Can you run this https://marco.org/rmbp-irtest.html for 10 minutes and report back on if you see any image retention?

I am curious to see the results as it sounds like you run the device at heavy loads.

Saw nothing to be concerned with. I also have Panasonic plasma tv's in my house so I am aware of what you are talking about. So, nothing yet.

As far as AppleCare, I do buy it and is has paid off a few times. As I keep my Macs for a long time, they eventually need something. Usually it is the spinning hard-drive that dies and they also get filled up with dust. Just recently pulled the 24-inch apart to blow it out. This may be the last desktop I buy, but never say never. I like the ability to be able to take the laptop on the road, and then plug back in at home with a big screen and keyboard.

I also have to say, the wired Apple keyboard with numeric keypad is the way I always go. It works great and has two USB ports as well. The new Magic TrackPad 2 is also great.
 
Very happy with my mid-2015 iMac 5K.

As fine as the Mac Mini was for a couple of years the much slower HDD and the fact I couldn't upgrade the RAM meant I sold it on the other week.

The difference between the machines is amazing; the boot up time has made a huge difference and the screen never ceases to amaze me.
 
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I'm very happy with my 2007 iMac, still working, and with my 2011 iMac , and now with my 5K iMac, that is my actual computer, so happy .
 
I'm happy with mine (late 2014), loaded. Any problems have been minor. The screen (the reason I bought it) continues to delight. I've never seen any kind of image retention. I'm surprised to be happy with an AIO.
 
I am, but my use consists of "extreme web browsing" and the occasional game (all of which have worked on high settings).

I also bought the flash model.
 
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