While it’s physically possible (your iMac uses a MXM GPU interface) and the board would be limited in its space and required cooling. The card would also need the custom Apple firmware to work.
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While it’s physically possible (your iMac uses a MXM GPU interface) and the new board would be limited in its space and required cooling. The board would also need the custom Apple firmware to work.
Sadly, I don’t of any that meet these requirements. Maybe someone else might know!
There is some workarounds out there which will allow you to run Mojave on your system but it does have its limits!
For now I would stick with Sierra as High Sierra and Mojave have some issues with SATA based drives as it also automagically upgrades the older GUID/HFS+ to GUID/APFS on SSD’s which is the issue on these older SATA based systems. Mojave applies GUID/APFS to both HDD’s & SSD’s and people are having issues with it on SATA based drives.
While it’s physically possible (your iMac uses a MXM GPU interface) and the board would be limited in its space and required cooling. The card would also need the custom Apple firmware to work.
Sadly, I don’t of any that meet these requirements. Maybe someone else might know!
There is some workarounds out there which will allow you to run Mojave on your system but it does have its limits!
For now I would stick with Sierra as High Sierra and Mojave have some issues with SATA based drives as it also automagically upgrades the older GUID/HFS+ to GUID/APFS on SSD’s which is the issue on these older SATA based systems. Mojave applies GUID/APFS to both HDD’s & SSD’s and people are having issues with it on SATA based drives.