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i use mbp13 2018 & sonnet breakaway 550
and considering buy rx590 saphire nitro+ se.
however, i can't find 590 support for mac in apple homepage
(https://support.apple.com//HT208544)
and also it seems like there mat be some problems using rx590 in mac os.
is there any problems using it?

I can't say specifically regarding the 590, but I'm currently using an rx560 in a Aorus gaming box with my 2018 Mac mini whilst I *patiently* wait for Nvidia drivers for Mojave. :mad:

It is also apparently unsupported but works just fine and I suspect that card will too. Have you looked at egpu.io to see if anyone has had success with it?

Cheers,

Mark.
 
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