Configure a 2019 iMac for Video Editing [u]

Posted on by Larry

[ Update: On March 19, 2019, Apple released updates to both 21.5″ and 27″ iMacs. These new systems feature improved CPU and GPU options, though the display and storage remain the same as earlier versions. I’ve reflected these new options in my recommendations below. ]

At their WWDC, in June, 2017, Apple announced and released new iMac computers, designed to meet the needs of professionals. These new systems sport a variety of very exciting features. However, if you are on a budget, how do you determine where to spend your money?

This article is designed to help you make more informed choices when you don’t have a lot of money to spend.

NOTE: I have not purchased any of these systems. My recommendations are based on past experience, current system specs and talking with informed individuals.

EXECUTIVE SUMMARY

If money is no object, buy the top of the line iMac. It will work great and you’ll have bragging rights over all the other systems.

But, if money IS an object, then you need to make trade-offs, balancing the performance you need with the money you have. However, you don’t need to spend a fortune to get a system today that can meet your editing needs for the next several years.

ALSO: Here are two other configuration articles you may find useful:

YES, BUT WHAT ABOUT THE IMAC PRO?

Holy smokes! What a system.

This review covers the iMac. Click here to read about the iMac Pro.

YES, BUT WHAT ABOUT THE MAC PRO?

Given the latest iMac releases, there are very, very few reasons to purchase a Mac Pro right now; especially given its price. Keep in mind, however, that Apple has already announced they are working on a new, top-of-the-line Mac Pro which will ship sometime in 2019.

Given what Apple has announced for the iMac Pro, however, that upcoming Mac Pro will need to be a true screamer to compete. I’m looking forward to seeing what Apple creates – but, as I mentioned earlier, I still need to pay my bills today.

And that leads us directly to the latest updates to the iMac.

WHAT SIZE SCREEN?

Both Final Cut Pro X and Premiere interfaces work best on larger screens. This is not to say they work poorly on smaller screens, but both of these display a LOT of elements on screen. More screen room is MUCH better.

I recommend a 27″ display. Plus, all the new 27″ iMacs now share the same 5K Retina Display.

NOTE: One of my iMacs is an older 5K iMac. I’ve discovered, that while seeing a 5K image is nice, the on-screen text is often very hard to read. So I’ve lowered the screen resolution using System Preferences to make the text larger. I prefer to easily read the text to seeing every pixel in my image.

However, if the purpose of the new system is video compression, you don’t need the bigger screen size. In which case, you can save money and improve performance with a 21″ system.

NOTE: Both H.264 and the up-coming H.265 video codecs are hardware-accelerated in all the new hardware. While this won’t help when transcoding into ProRes, hardware-acceleration will significantly speed compressing files for the web.

WHAT SPEED CPU?

UPDATE Intel’s latest 8th-gen and 9th-gen Core processors, including up to a 3.2GHz six-core 8th-gen Core i7 with Turbo Boost up to 4.6GHz for the 21.5-inch 4K iMac and up to a 3.6GHz eight-core 9th-gen Core i9 with Turbo Boost up to 5.0GHz for the 27-inch 5K iMac.

While CPU speed is important, it is not critical for video editing; remember, iMacs that were current as recently as last month, were easily able to edit almost all forms of SD, HD, and 4K media.

Any of the processors in any of the new iMacs will be fine for video or audio editing.

UPDATE: The choice in the 21.5″ iMac is between i5 and i7. The i7 is worth the money because of its support for multi-threading. The choice in the 27″ iMac is harder: between i5 and i9, because it’s a $500 differential. Unlike the i5, the i9 supports multithreading. If you are doing multicam, 4K or HDR editing, or lots of video compression, the i9 is worth the money.

HOW MUCH STORAGE?

I really like that Apple has put Fusion drives into all but two of their iMacs. I own two iMacs with Fusion drives and I remain very impressed with these systems. They are an excellent balance between the speed of an SSD with the storage capacity of spinning media.

Keep in mind that the SSD portion of a Fusion drive is only a part of the total storage. For example, the 1 TB Fusion uses a 32 GB SSD, while the 2 and 3 TB Fusion drives use a 128 GB SSD. The OS watches what you do and moves files onto the SSD based upon what you are using most. Which means that a Fusion drive works fastest with files you access over and over.

NOTE: Here is an updated article on storage speeds and media requirements that explains the load your storage system needs to carry.

If you want maximum performance AND you plan to store media on an external drive, get the 512 GB SSD. All the files in macOS will take less than 30 GB, leaving plenty of room for working files and immediate storage.

If you want an excellent balance between performance, price and capacity, stay with the 1 TB Fusion drive. Again, store media externally.

If you don’t plan to purchase external storage – and you will, you just don’t know it yet – get the 3 TB Fusion drive. (An extra TB for $100 makes this a better value than the 2 TB Fusion drive.)

One of my systems has a 3 TB Fusion drive. Currently, I’m using 600 GB of it. The rest is sitting around idle. When using external storage, you really don’t need lots of internal storage.

If you just want maximum performance from your storage, get the 1 TB SSD. It’s pricey, but it’s speed will make you giggle.

Apple notes: “For the best performance, iMac systems with 32GB or more of memory should be configured with a 2TB or larger Fusion Drive or all-SSD storage.”

NOTE: Apple’s marketing materials now define a terabyte as one trillion bytes. This means that when a disk is formatted, its storage capacity will be less than 1 TB because of the differences between how marketing and engineering calculate disk sizes.

WHICH GPU?

Configuring the GPU (Graphics Processing Unit) is now done when you pick the initial iMac, rather than as a build-to-order option within each iMac family. So, much though I would like to pick the mid-range system and add a high-end GPU into it, we no longer have that option.

Which is a shame. Because while we don’t need the high-end CPU system for most video editing, we would significantly benefit from the high-end 580 GPU in any system.

Both Final Cut and Premiere are increasingly using the GPU for most editing tasks, because the GPU is much faster than the CPU at rendering bitmapped images. Therefore, the best choice is the high-end GPU. The high-end GPU also includes 8 GB of video memory (VRAM).

However, the mid-range system with the Radeon Pro 575X is a perfectly adequate choice.

NOTE: The difference between the 575X and 580X is performance. The 575X has a peak performance of about 4.5 Teraflops, while the 580X supports up to 5.5 Tflops. Both will handle video just fine. All of the Radeon chips support OpenCL and Apple’s Metal and up-coming Metal 2 GPU computing API.

Here’s a link to learn more about Radeon’s GPU chips.

NOTE: Again, if you are principally doing video compression, the GPU speed is less important than the CPU speed. So, compressionists don’t need as high-performance a GPU as an editor.

UPDATE: When looking at GPU performance, use the specs for Metal or Metal II. OpenCL will not be supported going forward. Also, while eGPUs are attractive, I don’t see them, yet, as a big enough benefit for iMacs. eGPUs are principally designed for laptops.

HOW MUCH RAM?

Both Final Cut and Premiere will use as much RAM as you can afford.

Based on my tests with the 2016 MacBook Pro, I recommend a minimum of 16 GB of RAM, though, all my systems here have 32 GB. Again, if you have the money, max out the RAM. However, 32 GB of RAM will be sufficient for virtually all projects.

HOW MUCH SHOULD I SPEND?

You are going to be using this computer for four years. Spend what you can afford, but don’t be stingy in areas that matter: GPU and RAM.

All the base systems are fine, But, depending upon your needs, you can tweak the configurations to better match what you want the systems to do. All systems feature wireless mice and keyboards; though, in my office, I prefer my mice and keyboards wired.

NOTE: Apple has not yet delivered the Touch Bar on any stand-alone keyboards.

If it were my money and I was doing video editing on a budget, here’s what I would get:

Total: $2,499 (you’ll still need to spend additional money for 3rd-party RAM)

However, I wish that Apple made the Radeon 580X available on the mid-range unit.

If it were my money and I was doing mostly video compression, I’d get the high-end Mac mini. (This, in fact, is what I did personally.) Here’s an article that explains this in more detail.

As always, I’m interested in your opinions.


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346 Responses to Configure a 2019 iMac for Video Editing [u]

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  1. Rohan Jain says:

    I’m starting to get into light 4k editing with premiere and fcpx. I also do quite a bit of photoshop and web design If I get the base model 27 but 24gb of ram should I be ok

  2. Oguz Uygur says:

    Larry, thank you for this article! Your generosity with your time is invaluable for a lot of editors like me. I do have a question about older iMacs vs newer. There is a 2014 27″ iMac available for sale with specs:

    – 4.0GHz Intel Core i7
    – 32GB
    – 1TB SSD
    – AMD Radeon R9 M285X 4GB

    Would you buy this machine for $2000 or buy the new machine you recommended on this article? And why?

    Thank you.

    • Larry says:

      Oguz:

      This question is impossible to answer in the abstract, it all depends upon what type of video you are editing

      * SD? Not a problem.
      * HD? Probably not a problem
      * Multicam? Probably not a problem
      * 4K? Not sufficient
      * HDR? Not sufficient
      * Heavy effects work? Not sufficient

      You get the idea – lots of choices here. Also, be SURE that you budget for a second hard drive and, preferably a RAID. You’ll need lots of storage – more than the 1 TB SSD – for your system.

      Larry

      • Oguz Uygur says:

        Thank you for the quick reply Larry! You are right, I should have given you more details. I am editing 4K footage shot with C200 lately, some light RAW and slow motion as well. Not a ton of effects work.

        I ended up finding a great deal on B&H, ( https://www.bhphotovideo.com/bnh/controller/home?O=email&A=details&Q=&sku=1342560&is=REG ) with specs:

        3.8 GHz Intel Core i5 Quad-Core
        8GB of DDR4 RAM | 2TB Fusion Drive
        27″ 5120 x 2880 IPS Retina 5K Display
        AMD Radeon Pro 580 Graphics Card (8GB)

        And added 2 16gb aftermarket RAM so I will end up with 40gb RAM. All for $2,325

        This is a better machine than you recommended on this post at a better price! I am pretty stoked! Thank you again for your help!

        • Alexander says:

          Hello, I have exact the same machine (exept the RAM part. I went with 24 Gb for now).
          How is your experience with 4k editing? Do you edit from external SSD via thunderbolt or do you copy the footage on the fusion drive

          • Larry says:

            Alexander:

            24 GB of RAM should be fine.

            And, I always edit with media stored on an external RAID connected via Thunderbolt 2. I use the internal drive for the macOS, applications and whatever temp files the OS needs to create.

            Larry

          • Oguz Uygur says:

            Alexander, I wish I had gotten better CPU than i5 because it is making me pull my hair at the moment. It does not replay smoothly at all. I am editing 4K MP4 files shot with C200 and my system struggles greatly. It is not even RAW or HDR, and very minimal slow-mo footage. I tried everything, lowered resolution, used internal drive to edit etc. nothing works. Currently I set the project setting to Mercury Playback Engine Software Only and I am rendering manually as I go, that is the only way I can edit, which shouldn’t be the case imo.

  3. Ryan says:

    Hi Larry,

    I was just looking for a more recent opinion on the 27 inch Imac base model (with added RAM) for small premiere 4k projects (under 10min). I’ve seen a lot of posts about slow response times, maybe related to the Imac 5K display.

    Thanks,
    Ryan

    April 2018

    • Larry says:

      Ryan:

      I’m editing daily on a 27″ iMac with no problems. And, past work with a 5K 27″ iMac has also worked very well.

      I would not necessarily use it for RAW files, or HDR, but for 4K and HD I’ve found it to be quite acceptable.

      A lot depends upon the codecs and frame sizes you are editing.

      Larry

      • ryan says:

        Thanks for your reply Larry. Just to sure I was thinking of the current base model imac 27 inch 5K, 3.4GHz quad-core 7th-generation Intel Core i5 processor. You believe this would be fine (minus RAW and HDR) for 4k/HD smaller projects?

        Thanks again,
        Ryan

  4. Dustin Getzlaf says:

    Hi Larry,

    Great article. I’m not seeing my exact answer here based on the new machines. There is an i7 upgrade available for $240 CAD. Seems pretty cheap. But you have mentioned that GPU and RAM are most important. Would you do this upgrade? Or is it unlikely to effect video editing whatsoever… Keep in mind I do want future protection. If I’m shelling out 4 grand on a computer, I don’t want it to suck in 3 years.

    The new machines do come with the Radeon 580 Pro by default. Based on the above this is an awesome GPU that should be great for Final Cut. I will also likely take your advice in adding 32GB of memory myself and probably go with a 512 SSD for speed, moving my projects to an external drive for storage when completed.

    • Larry says:

      Dustin:

      It really depends upon what and how you are editing and how much money you have.

      If the CPU upgrade “seems really cheap,” then spend the money. GPU speed is most important these days, followed by RAM, followed by the CPU. However, that changes if you are editing 4K or larger images or multicam, which tax the CPU more. RAW and color grading stresses the GPU. Larger projects and analysis stress RAM. So, it varies.

      Be default, you need to assume that any computer you buy today will last four years. Technology changes will make today’s systems too sluggish. So, don’t think too long-term when buying a computer. If you can use it longer, great! But don’t plan on it.

      Larry

  5. Ginny says:

    I am indecisive on Fusion drive or SSD for my purposes. I am in local tv news and work with the investigative stories…stories with 50+ GBs of video to injest, possibly heavy gfx. The trick is, this may be my one shot. TV stations are poor and i’ll be dead before they invest in another system. So I need stability and speed. Stories will live on the system for a month, maybe two and then I move them off onto a permanent archiving system. I work with Premiere, AE and Photoshop. Fusion or SSD?

    • Larry says:

      Ginny:

      Fusion. 3 TB.

      Fusion has a 128 GB SSD drive built into it, which gives you the speed of SSD, with the capacity of spinning media.

      I would also STRONGLY!! recommend buying an external drive or small RAID to serve as media storage in addition to the internal drive. I have an 18 TB OWC RAID attached to my main editing system. It gives me all the speed I need, plus lots of storage capacity to hold projects until they are ready to be archived.

      If you can only spend the money once, this is what I would recommend.

      Larry

  6. scott larson says:

    Hi Larry thanks for all the valuable info. My internal debate is the i5 or i7. I need this for 4k editing, not huge projects (usually just a few minutes), shot in LOG, edited in Premiere, color in Resolve. Exporting either to 4k or HD (usually HD, at least at the moment). I use 4K for zooms/crops/pans in the edit. Is the i7 really worth the extra money? I’m more concerned with having a smooth editing experience with as little lag as possible. Assuming I’ve got 40GB of RAM and the 580 GPU, is the i7 going to make much difference?

    Thanks

    Scott

    • Larry says:

      Scott:

      I’m not technically savvy enough to compare the two processors. Both will do the job. If you aren’t editing long projects 8-12 hours a day, and money is tight, get the i5. If you can afford it or the workload is really heavy, get the i7.

      Both will work.

      Larry

      • Scott says:

        Thanks, not the definitive answer I’ve been searching in vain for though! 🙂 Well I guess if I’m upgrading I may as well upgrade…would hate to lay out a couple thousand bucks and regret not going all out..!

        • Larry says:

          Scott:

          It’s impossible to be “definitive.” Performance depends upon:
          * Multicam vs single stream editing
          * Frame size
          * Frame rate
          * SDR vs. HDR
          * Codecs
          * Transform effects (but not rendering)
          * Amount of titles used
          * Proxy vs. optimized vs. camera native
          * Probably the phase of the moon (just kidding)

          Because each of these change on a per project basis, making a categorical “this is best” statement is just not possible. All I can do is suggest – both chips will work. What you are trading off with the i5 is, perhaps, slower performance and more rendering for a lower price. BUT, depending upon the list above, if you pick the right combination, you won’t notice a performance hit at all.

          If you have the money, buy the i7. It will work great. If you don’t, buy the i5. It, too, will work great. CPU speed is not nearly as critical as GPU performance, the amount of RAM and the speed of your storage. Those are far more important than the CPU.

          Larry

  7. Salvador says:

    Hi Larry, I use to edit on an imac 21,5 late 2009. I want to buy an updated computer for editing on an extremely tight budget as soon as possble. I generally edit low budget documentaries thet implies the handling of full hd material. Rarely I use 4k and i don’t do neither complex effects nor on line postproduction. I have the opportunity to buy this equipment:

    Apple iMac with 4K Retina display (21.5-inch, 2015)
    Display size/resolution 21.5-inch 4,096×2,304 display
    PC CPU 3.0GHz quad‑core Intel Core i5 (Turbo Boost up to 3.5GHz
    PC Memory 8GB of 2400MHz DDR4 memory
    Graphics Radeon Pro 555 with 2GB of VRAM
    Storage 1TB 5,400rpm HDD
    Networking 802.11ac wireless, Bluetooth 4.0
    Operating system Apple OS X 10.11 El Capitan

    I would like to know if it is worth buying it given the material i handle or it is preferable to wait until affording to buy a more “pro” equipment.
    Thanks,

    Salvador Savarese
    Buenos Aires, Argentina

    • Larry says:

      Salvador:

      For HD, this should be fine system. RAM is a little limited, but for what you intend, it should be fine. The big thing is that you will need more storage than this system provides. Be sure to budget for an external drive or RAID. Also, don’t use WiFi for connecting to your media. WiFi is fine for the web.

      Larry

      • Salvador says:

        Thank you very much for your answer Larry.
        I use Lacie quadra external disks. Believe me that in argentina takes some times to convince producers to buy them!

        • Larry says:

          Salvador:

          Producers don’t want to spend money in ANY country. I’m glad you could convince them, it was a wise decision.

          Larry

  8. Tornaventofilms says:

    Hello Larry, thank you for taking the time to make those usefull reviews. Someone from apple made me an offer I couldn’t refuse:
    Imac 27, IntelCore7 7th generation 4,2 ghz 32go DDR4 at 2400MHZ SSD 1to and Radeon pro 575 and accessories. I can purchase it for 2500 brand new with apple care. I am an independant fiction editor/director and my macbookpro retina cannot handle the work I’m doing now (more and more 4k) Am I stupid to hesitate according to you ?

  9. JY says:

    Hi Larry, i’m stuck between deciding to get the 27” 3.4ghz with Radeon Pro 570 or the 3.5ghz with Radeon Pro 575. I mostly deal with 4k videos (projects usually just a few minutes), some light after effects work, and colour in resolve. I’m planning to use it for a few years so i’m wondering if there will be much difference between the two and which is more worth the money.

    • Larry says:

      JY:

      Since you are only doing light effects, either system will be fine. The speed difference between the CPUs is not significant.

      Larry

  10. Subasiano says:

    Hi Larry, thanks for your article and for the impressive feedback of the comments.I’m a freelance filmmaker, i usually work in HD but i buying more and more 4k equipment and i want start work wit it in safety and speed: not huge progects, but i want to be sure that my machine dont’t be stocked and work slowly.
    I’ buing an i27 IntelCore7 7th generation 4,2 ghz 32go DDR4 at 2400MHZ SSD 2/3 tb fusion drive and Radeon pro 580, actually this is my choice after reed with attention all the comments. Do you think is enough?
    My special question about this machine that you mention before; 18 TB OWC RAID.
    You work with it via tunderbolt? you think is better work on it than work directly inside the machine, i mean managing the project directly inside the computer? how is you experience and if is positive you suggest me to buy one for the saefty and facility of my works? thanks a lot.
    Sorry for my terrible English grammar but is not my mother language.

    • Larry says:

      Subasiano:

      Thanks for writing!

      You are getting a good, solid system. 4K media is extremely large, files are often measured in TB, not GB. For this reason, external storage is essential. Your Fusion drive will fill up too quickly. The length of the project is less important than codec you are using, and what you are doing to the media. LOTS of effects may bog this system down, that does not mean it won’t work, it will just be slower.

      If money is no object (and when is that EVER the case) an iMac Pro is a better choice when you are working with 4K or higher resolutions or HDR media. However, from your description, I think you are getting a fine system that should last you several years.

      Larry

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