so i thought this card which is based on NVIDIA GeForce GT 730 GPU would work...
You always want to look up any questionable cards on GPU Zoo. This tells you it's not a Kepler card even though it launched in June 2014. It's got the
GF 108 GPU. You can see that where it says Die name. What they do is use up lower cost older chips by putting the newer model name (GT 730) on them and selling to unsuspecting buyers.
Fermi cards don't work in Mojave - Catalina - Big Sur hacks. Fermi is not
For me should be the hackintoshers' slogan. They had massive problems in hacks when they first came out some 8-9 years ago. We used to call it the Fermi Freeze.
"NVIDIA introduced and launched their first Fermi GPU based GeForce graphics card, the GeForce GTX 480 back in 2010. The first and revised Fermi GPUs were made part of the NVIDIA GeForce 400 and GeForce 500 series lineup."
So why the heck would Gigabyte put a GF108 chip into a 2014 release GT 730 GPU that should be Kepler 2nd gen based ? As described above, they were simply getting rid of older unwanted GPUs by sneaking them into 730s. You can tell by looking at the photo of that Fermi based GT 730 that something isn't right, looks like an older design card than the 2014 Kepler cards. Almost looks like a fake knockoff of a genuine Gigabyte brand card. Happens a lot in China. The term often used is "rebranding."
This is what my post on Nvidia Graphics Compatibility says:
Q: Some cards in the supported list have Fermi variants. How do I determine whether my Nvidia card is Kepler based (GK)
and not an unsupported Fermi (GF)
card ? (GT 630, 640 and 730 cards can be from either series)
A: It's really quite easy. Go to this website
http://www.gpuzoo.com/ and enter the make and model of your card.
At least MSI puts Kepler in the title and a K in the model name, N730K. See the screenshot here: