There is a video to show you what I rendered, but you probably won' find that useful because of quality issues of Amazon video.I wanted to test this computer by rendering 4k video. I did so, and it was much faster than my other computer.What was the 4K sample from?I used my GoPro hero 4 on my 3 axis stabilizer in a store.  This 4k has been hard to render with my other video laptopWhat video program did you use?I used Cyberlink Power Director 18Well, how well did it do?Actually, it did an excellent job.  I had no problem working with the video. The program did not stutter at all.  I edited for size, color, vibrancy, sharpness, etc.  It took 8 minutes to render a 2 minute video.  It did excellentCould I multitask while it was rendering the video?To my surprise, yes!  I was rendering the 4k video and watching another video on Youtube at the same time with no  problemThe monitor size.For me, the monitor is huge!  Right now I am sitting in a reclining  chair sitting about 4 or 5 feet from the computer, with the wireless keyboard in my lap.  Awesome!Can you watch 4K on the monitor?Yes. However, this is NOT a 4K monitor. The highest resolution is 1080 HD. I am not blown away by the clarity, but it is fine.  I have seen monitors that I was impressed by and at this  time, I am not blown away, but neither do I find this disappointing...So, I checked around and the Apple all in ones are either 4k or 5k, but they all have much slower processors and less memory.  For me, I want to able to render 4K video and look at it to make sure there aren't errors.  I would like a 4K monitor.  Especially in this size, but it is not necessary.  I would rather have the faster processor and more ram than a 4k display.About Apple all in one Vs this product:My wife has a mac and it is simple, but it has too many weird problems like the scroll bar going away when surfing than I like.  I mean, come on!  It is 2020 and Apple can't even get scroll bar to work on a web browser?  I checked the forums and the apple solution was and I am not kidding, to turn the computer on and off and see if that fixes the problem..  I find other problems that should already be worked out by now to be very frustrating on my wife's new macbook vs her old macbook.  I would much rather have a windows machine myself.I like also how the web cam on the monitor ticks away for privacy when you don’t want to use it!So what is the one thing this computer misses in your opinion?I would like the ability to plug i usbs and memory cards on the keyboard. but to be frank, I am not sure how they would do that.  They would have wireless transmit the data to the computer,  which makes no sense..Sure other than the above, I would LIKE  a 4K monitor....  Like, but not need.  I do need a faster processor with more ram though!I hope this helps!  I will be sure to update this review over time!Mark:)