10.14 & 10.6

Discussion in 'Mac Pro' started by WayneStewart, Dec 13, 2018.

  1. WayneStewart macrumors newbie

    Oct 7, 2008
    Vancouver, BC, Canada
    I have a 2010 MP. I ‘ve been running 10.14 on it which works fine until I run into something that needs GPU acceleration. So I’ve been thinking about upgrading the video card, possibly a RX580. Possible problem, I need to run 10.6 occasionally. I don’t need GPU acceleration in 10.6, just basic video.
  2. tsialex, Dec 13, 2018
    Last edited: Dec 13, 2018

    tsialex macrumors 603


    Jun 13, 2016
    You will need an EFI GPU to run 10.14 and 10.6 on the same Mac. If I'm not wrong, there is not a Mojave METAL supported GPU that has support for 10.6, but you can use EFI drivers with 10.6 to show a un-accelerated screen, so you are probably limited to HD 7950/GTX 680 Mac Edition cards and EFI flashed ones.

    RX 580 will boot to a black screen with anything older than 10.12, no EFI support.
  3. bunnspecial macrumors 604


    May 3, 2014
    10.6 is the primary operating system on my MP 5,1. I use it to run legacy software that CAN NOT be virtualized(I need to control Firewire peripherals).

    As much as I'd like to run 10.14, I've resigned myself to sticking to 10.13 for the time being. If I do eventually run 10.14, I will do the somewhat arduous option of switching video cards depending on the OS I'm running.

    Unfortunately, running without accel also isn't an option for me in 10.6, as some of the software I run is virtually unuseable without it. I'm watching 5870 prices and I'm hoping that the need for Metal-compatible GPUs in 10.14 will bring the prices down-that will be a decent, but not huge, upgrade from my current 5770.
  4. howiest macrumors 6502


    Aug 16, 2015
    Left Coast
    After upgrading my video card to a GTX 680 4 GB, years ago, I was disappointed that I could no longer boot into my Snow Leopard volume to play some of the good old games from days gone by. Snow Leopard ran fine but the games wouldn't run at all. Switching out the 680 to my old card for those few occasions was inconvenient to say the least.

    A few months back I found a great deal on a cMP 4,1, and I bought it with intentions of having it around mostly for replacement parts. But it came with an ATI 4870 video card, and as a result it became the perfect machine for running Snow Leopard along with all those old games.

    I've since upgraded my GTX 680 to a Sapphire Pulse RX 580 which gives me a more modern cMP, alongside the nostalgic stock cMP that was meant as a parts machine. The best of both worlds.

  5. MarkC426 macrumors 6502a

    May 14, 2008
    Could snow leopard be run from a vm in parallels on a 10.14 mac with RX580?
    Not sure how vm’s handle new/old hardware......:confused:
  6. tsialex macrumors 603


    Jun 13, 2016
    Yes, no problem. The hardware is virtualized and it works nicely.
  7. LightBulbFun macrumors 68020


    Nov 17, 2013
    London UK
    still no GPU acceleration sadly and and no way to pass through a firewire device (like in @bunnspecial case)

    its a shame OS X does not support IOMMU PCIe passthrough like Linux does, because MP3,1s and newer all support IOMMU and you can do PCIe pass through on one under linux :)

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6 December 13, 2018