I thought I should mention that I got macOS Mojave running on a hackintosh with a E7500 775 socket core 2 duo CPU which only supports sse 4.1. It’s been about a day and no kernal panics yet. Apparently we don’t need sse 4.2. So it might be possible to get this running on a unibody core 2 duo MacBook or MacBook Pro if we figure this graphics thing out.
Ok, this is good. However, some people with the MacPro3,1 (Penryn-based xeon a.k.a "Harpertown") which should support sse4.1 (and did, because they worked fine in High Sierra) reported a kernel panic when booting. Could someone post a good screenshot of the panic screen from a MacPro3,1? Or did we get stuck at editing PlatformSupport.plist?
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I had a core 2 duo E7500, 120 gb ssd (with hfs as the file system), 4 gb DDR2 Ram @ 667 mhz, and it has an asus motherboard with a legacy bios (I can’t remember the exact model number). I was using a 9400 gt 512mb for High Serria. But I temporarily installed a evga gtx 760 4gb for Mojave. For a long term graphics solution I plan to use a gt 610 since I only use this computer for Xcode. As far as I know a gt 610 is metal supported.
GT 610 is a rebrand of the GT 520 (GF119 gpu, fermi).
https://en.wikipedia.org/wiki/GeForce_600_series#GeForce_600_(6xx)_series
So the minimum non-rebranded card is the gt 630 and gt 640 (only certain revisions) or gtx 650 (100% kepler)
Your best bet to ensure you get a kepler gpu is the gt 710, 720, or 740. Those GPU's only have one revision, and it is a GK208 (for 710, 720) and gk107 (for 740). The older 6 series cards (below gtx 650) all have at least one hardware revision in which they used a fermi gpu, so to be safe, go 710, 720, or 740. SOme gt 730's were fermi rebrands, so avoid those.
https://en.wikipedia.org/wiki/GeForce_700_series#GeForce_700_(7xx)_series