I had compiled a list of NVIDIA Metal cards. I have reviewed it and added some comments. Perhaps it is useful in this thread. Here goes ...
This applies to officially unsupported Macs like classic Mac Pros as well as Hackintoshes up to 10gen Intel CPUs. All these should use discrete graphics cards and avoid the sluggish Intel iGPUs.
A general comment re Apple/AMD/NVIDIA. What is kind of amusing, is the fact that older Kepler cards are very well supported by Mojave/Catalina (& potentially Big Sur). Similar generations of ATI/AMD cards are mostly problematic and it is quite hard to pick models that work. This is even down to certain firmware versions causing black screens. I have bought in the order of 20 cards each Green and Red and ALL Green cards work through the range of cMPs but only half of the Reds work exclusively in 4,1 & 5,1. Conclusion: ANY Kepler card works with full Metal support in all cMP models.
A list of Metal compatible series Nvidia Kepler cards that work with native Mac drivers from Mavericks to Catalina (Big Sur ?). Take care with *) as some brands use Fermi GPUs that DO NOT work with Apple's Metal drivers.
Entry-level:
GeForce GT 705
GeForce GT 710
GeForce GT 720 *
GeForce GT 730 *
GeForce GT 740
GeForce GTX 745 *
Mid-range:
GeForce GTX 750 *
GeForce GTX 750 Ti
GeForce GTX 760 192-Bit
GeForce GTX 760
GeForce GTX 760 Ti
High-end:
GeForce GTX 770
GeForce GTX 780
GeForce GTX 780 Ti
Enthusiast:
GeForce GTX Titan
GeForce GTX Titan Black
GeForce GTX Titan Z
There are other Metal cards in 600 series and Quadro Ks.
Here's a partial list of 600 series cards:
600 series
GT 640
GTX 650 *
GTX 660 670 680 690
All Metal compatible Nvidia cards use one of the following (Kepler = GK) chipsets:
GK104
GK106
GK107
GK110
GK208
GK210
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