MP 1,1-5,1 GTX660 next to ATI 5770

[Grindhouse]

Hey guy's,
I hope this hasn't been discussed yet.

I was wandering if it is possible to have a GTX660 (with two screens attached) alongst the original ATI 5770.
I understand a GTX660 is compatible with Catalina but has no boot screen if not flashed.
So I thought having a third screen on the ATI 5770 foor the boot screen and the 2 other screens on the GTX for daily work.

Mac Pro 5,1 Mid 2010.
Thanks for your thoughts!

 

[tsialex]

Hey guy's,
I hope this hasn't been discussed yet.

Seems you didn't took a look at the search, no?

I was wandering if it is possible to have a GTX660 (with two screens attached) alongst the original ATI 5770.
I understand a GTX660 is compatible with Catalina but has no boot screen if not flashed.
So I thought having a third screen on the ATI 5770 foor the boot screen and the 2 other screens on the GTX for daily work.

Mac Pro 5,1 Mid 2010.
Thanks for your thoughts!

Works more or less reliably up to 10.13.6.

Mojave removed support for multiple dissimilar GPUs and trying to use a AMD+NVIDIA (or a supported + an unsupported one from the same manufacturer) GPU will have the weirdest bugs.