It should "run" Mojave but with some UI glitches and artifacts in certain modes. Wouldn't hurt to try first.
Of course the easy path is a native vid card. My mac edition GTX 680 was a little pricey but prices have decreased last time I checked. Entry price around 200+ (you may get lucky and find one around 150+)
Flashed cards will present issues with boot screens (last time I checked)
@Starplayr 's Titan series would be my card of choice if I were re-kitting my 3.1. Very good metal compatible option. I may consider that if I swap my 3.1 out for a cheap 5.1
An original GTX GeForce Titan 6B or Titan Black 6GB should work with Apple's drivers as both of those are Kepler cards. These cards are excellent and really happy with 'em.
The newer Titan Cards 12GB Maxwell and Titan Xp Pascal should work when web drivers are available. Both of those cards are on the high end and could be overkill for a 3,1 though the MP 3,1 will run the Maxwell card just fine except there could be times where too much power is pull.
You can reroute power from the ATA DVD-RW drives and I did that for my Original Titan for its 8 pin connector. It has a dedicated 8 pin power pulling from that ATA DVD-RW would be power. And it's six pin is off one of the six pin cables. You should be able to use both six pin connector on the Mac for the original Titan, but since I already rerouted the power from my original Maxwell card, I decided to do something to make sure the Titan has all the power it needs. Not once has is killed the computer for drawing too much power. It does pull less power under its max load than the Maxwell Titan. Another reason I did this was to allow myself to add power to an original Mac 8800GT Card incase I need a boot screen, verbose boot, or boot options. My titan is not flashed for Mac and it is neutered to 2.5.GT/s but it does use all 16 lanes. In everyday operation I do not see a difference from 2.5GT/s to 5GT/s (My titan Maxwell was flashed). This is because on the Mac, the Titan 5GT/s card will run at 2.5Gt/s calls upon it. This should work on the Mac Pro 4,1 and 5,1 this was with a PC Card. The Mac Pro 3,1 does not do this speed jump on a Non-flashed card. It will only make the jump on a flashed EFI Card.
Each Titan generation is faster than the previous and each on has a larger power draw when taxed.
On a Mac Pro 4,1 or 5,1 however you may want to look at the 1080 or 1080Ti if you want the best one. It will run a little cheaper flashed as well.
other cards in that series are 1050, 1060, and 1070.
But obvious the Kepler cards right now are golden because we can run them on original Nvidia Mac drivers which I am really really liking right now. Currently we know the 680 and Origina Titan Kepler cards work. But other Kepler series cards should also work. probably a GTX 7xx,8xx,9xx series
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Tell me about it! That would be sweet!
Some here are exploring eGPU solutions for our unsupported laptops. That may be the gateway to full metal compatibility on unsupported macbooks and macbbookpros! Dunno, just thinking out loud.
I do know that eGPUs not only let you drive external high end monitors but are fully capable of enhancing native graphics and compute intensive operations (headless) . Apple's Blackmagic does for newer thunderbolt 3 laptops, but its very expensive and a closed architecture (limited expandability) . Sonnet and other break away boxes have competing solutions.
Hardware geeks here please chime in...
Yeah and a lot of MacBooks don't have Thunderbolt 2 which makes eGPU harder.
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A sequence question regarding updating to release version of Mojave. Do I just run the update from the app store? If not that way what is the proper way of doing this without a clean install?
I have had developer previews in that past that were not updatable. I do not know what Mojave is gonna do with its builtin updater. I am running APFS and waiting to see if it will. Holding off installing a bunch of stuff until it's officially out. No crashes though or artifacts. This is one of the smoothest OS' I've run.
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Dark is nice at night but I think even Apple did not mean it to be a general purpose mode. I'm growing to prefer Light for everything else. So I have a vested interest in this too.
At least I don't have to stare at a listless grey menu bar without fiddling with accessibility transparency and contrast options. My HIToolbox "sledge hammer" fix works pretty well for me (and some others): a set and forget workaround. Not ready for public consumption (the way it's "packaged") but if you're interested just PM.
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Great article - thanks.
It's great to see another group work on eGPU for Macs especially with Nvidia cards. And seeing it working on High Sierra on a Thunderbolt 2 Machine, that's pretty cool.
