I Did install Nvidia GTX 970 to my Mac Pro 5.1 Yosemite. I have nvidia's drivers installed and 970 works fine without the boot screen.
I have Dell UP2414Q 4K display in use but I can get only 3200x1800 pixel out of the card. It will detect monitor type and max resolution correctly but does not provide 3840x2160 option.
Any idea why or how to fix this issue?
Hi, sorry you are having trouble. The crucial detail you have left out is HOW you are connecting display. Cable, adapters, connectors.
As far as rest of recent posts, part of my well documented angst when nMP was announced was I could see where it all headed. When Apple ends support for all cMPs then the ONLY drivers they will have to keep in the OS (or even allow to work) will be the ones for components in actual shipping products. If they ship an iMac with 970m, there will be no reason for driver to also support 960 and 980 as things work now.
We are most likely ceasing work on AMD cards for a similar reason that isn't often understood. AMD cards give Apple better control in that the ports are hard coded into the drivers. NVIDIA has used a different method where the ports are defined by the EFI and BIOS. This is why we have been able to create the 780 and Titan cards where all ports work perfectly. Same with 750ti and 750. Card behaves as if Apple made it.
AMD cards work best if you use the version IDENTICAL to the Mac version. With recent R9 280 cards moving to a single DisplayPort we have discovered a new issue. The Apple driver for these expects 2 Displayports. When only one is present it leads to mayhem. An unflashed one of these has twice proven completely unusable for us. The first one we were able to fix with EFI but yesterday we had to contact a flash job customer and tell them their single DP R9 280 is untenable in OSX, with or without EFI. Mind you, this is a card that system sees as "679a", same as 7950. This is why Apple writes AMD drivers as they do. So while we have been able to give bootscreens and PCIE 2.0 to R9 290, the rom will likely never be "finished" in that Apple will never include a useable "personality" in the OS. The ONLY personality so far in the family is for a 6 DP personality. (Wanna guess what that is for?)
So, since they know they aren't going to create a R9 290x for Mac they will likely never finish making a driver for it, and we will never be able to create a "perfect" R9 290x. Hackintosh folks have found ways to mod the driver to match the ports, but this requires a rewrite for every OS update, not tenable for us.
So we need to concentrate on NVIDIA cards as they are the only ones with futures as far as I can tell. The flexability in their drivers will allow us to keep making "perfect" cards for a little while . (Couple of years at least, Apple willing)
The only Ray of Hope I can offer is an obscure thing. For some reason Apple has kept a version of Expansion Slot Utility in the OS right through today. Only works or is needed on 2006/7 Mac Pro but you can go look in your Core Services folder and find a version there today. Literally 3 OS versions after what OS last "ran" on those machines. I see this as a sign that there are a few sane folks at Apple still supporting computers instead of looking forward to a day when they are all sealed up like an iPhone.
Support NVIDIA for Macs, they are our best hope, both for cMP and eGPUs in TB Macs.