Hi all,
Please bare with me. I have a question hoping to be answered.
Yesterday, when I visited my local Apple Store, I ran a side by side comparison test with two iMacs. The one on the left was the high end stock iMac 27" 5K with 2TB Fusion drive 8GB RAM and a dedicated graphics card. The one on the right was a stock 21.5" 4K iMac with a 5400 RPM HD, 8GB RAM and the integrated Intel Iris Pro 6200 card. When I launched a demo iMovie project shot with an iPhone 6s in 4K video, I noticed that there was noticeable jitter in between frames on the 21.5 more than the 27. I did this test multiple times even with different demo content and noticed a similar pattern. Now, I really need to upgrade the existing setup I have but have no desire to get the 27". My goal is to completely max out all the specs on the 21.5 4K iMac (Intel i7, 16GB RAM, 512 SSD) which would also provide me with upgraded PCIe based flash, where all my files would be saved to. Hypothetically, if I do this would it then mitigate the jitter between frames while going through my iMovie projects shot on my 6s? If so, can you explain why? My thought is that since my files can be read at a blazing speed, then it should provide a much more fluid experience compared to the 5400-RPM drive used to demo this content to me in the store. Also, I don't believe that the 27" 5K iMac Fusion drive delivers the same PCIe flash performance as the 256 or 512 all flash configuration. Thanks!