These seem pretty niche TBH. They do as someone pointed out facilitate a TB 3 display on older hardware and they will add more grunt for graphically intensive apps. Personally I found EGPU gains hit and miss. I was running a 2018 mini with a 5700 XT and Razor Core for editing (and some Windows gaming). It worked pretty well - but it was bulky, very noisy, and edit renders would often glitch out. It’s now being relegated to a backup machine - PS5 takes the gaming and an M1 Mini edits just as quickly - except silently and with no glitches. I think Apple toyed with the Intel and EGPU routes as a stop gap - but (at the expense of Windows) see massive power and performance wins with their own silicon. If you have an Intel TB3 machine with integrated GFX and need portability and extra power I’m sure these would be great. But the price is basically a bumped up Mini so it’s a tough call. But perhaps you’re super niche and need a Media Composer on Catalina with some extra grunt - 5700’s do have some video encoding acceleration, maybe you have an LC 5K monitor- but get ready to hear those fans...
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