Ok so I should probably get an external ssd. I think I will definitely look into that. Now not sure which iMac to go with. The original 2019 iMac seller won’t post it but there’s another selling selling a 2019 iMac for the same price as the 2017. If I was to buy one of these iMacs and then add ssd which would be better to get and upgrade?
2017 27inch bought in september
- 3.4 GHz Intel Core i5 Processor
- 1 TB Fusion Drive
- 8 GB 2400 MHz DDR4 Of Memory (will upgrade to 16gb)
- Radeon Pro 575 4096 MB Graphics Card
or
2019 iMac 27inch bought in November
-3.1GHz 6-core 8th-generation Intel Core i5 processor
-Turbo Boost up to 4.3GHz
-16GB 2666MHz DDR4 dual channel memory, configurable up to 64GB
-1TB Fusion Drive¹
-Radeon Pro 575X with 4GB of GDDR5 memory
Hi hollyb96,
Picking out a proper-computer-for-the-job-at-hand can be challenging, best practice, imo, to do some homework to learn what exactly one needs. Specs are a good place to start and given the choice between the two machines you mentioned...
iMac 21.5-Inch "Core i5" 3.4 (4K, Mid-2017) Specs (Retina 4K, Mid-2017, MNE02LL/A, iMac18,2, A1418, 3069): EveryMac.com:
Technical specifications for the iMac "Core i5" 3.4 21.5" (4K, Mid-2017). Dates sold, processor type, memory info, hard drive details, price and more.
everymac.com
iMac 27-Inch "Core i5" 3.1 (5K, 2019) Specs (Retina 5K, 27-Inch, 2019, MRR02LL/A, iMac19,1, A2115, 3194): EveryMac.com:
Technical specifications for the iMac "Core i5" 3.1 27" (5K, 2019). Dates sold, processor type, memory info, hard drive details, price and more.
everymac.com
...the 2019 is the better specced and will be the better performer for your needs and here's why...
Comparing benchmarks (as quoted from those links) the 4-core 2017 Geekbench 4 multicore test = 13,570 and the 6-core 2019 weighs in at 21,552, the latter offering a roughly 59% speed improvement over the former and those numbers can be verified at their Geekbench source...
iMac (27-inch Retina Early 2019) Benchmarks - Geekbench Browser:
browser.geekbench.com
...also, in this case, the 2019's 6-core beats 4-cores, 4.3 GHz Turbo boost tops 3.8, and the faster RAM helps, too.
Regarding the compute test scores of the Radeon Pro 575 vs the 575X, they're a wash as seen here...
Radeon Pro 575 - Geekbench Search - Geekbench Browser:
browser.geekbench.com
Radeon Pro 575X - Geekbench Search - Geekbench Browser:
browser.geekbench.com
...so they should not factor greatly in your considerations.
I do have a few questions for you to help this discussion along...
1. what video format are you looking to edit (1080 HD, 2160 UHD/4K)?
2. What video editing software are you considering (QuickTime, iMovie, Final Cut Pro X, Adobe Premier, BlackMagic DaVinci Resolve, etc.)?
3. What camera will you be using to capture your video (iPhone, particular camcorder, particular DSLR or MILC)?
4. What type of videos are you looking to created (simple 1-or-2-or-10 cut home movie clips, short but more complex multi-cut videos, say, for youtube, semi-to-very complex editing for story or documentary videos, etc.)?
...my point here being, the more data-intensive your needs, the more computing horsepower you'll need. Here's an article discussing iMacs and video editing choices that I recommend giving a good read...
Configure a 2019 iMac for Video Editing | Larry Jordan:
I hope this all was helpful and please keep us posted as to how your decision is coming along.

Jimmy G
NOTE: I have no affiliation with any of the above links, they are provided for educational purposes.