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Clover is an EFI bootloader for hackintoshes. Reportedly it initializes PC graphics cards on a real cMP too, therefore you'd have boot screens. When the news broke out here, only one person tried it but then he got too busy with other projects to finish.

I am just astonished, with all the problems associated with not having boot screens, and the cost of paying for a flash, why there aren't more people trying it out. It's literally free, and if it doesn't work you can uninstall it.

https://sourceforge.net/projects/cloverefiboot/

Apparently it also has USB 3.0 drivers, so you could have USB 3.0-based boot drives on cMPs too, which you can't do otherwise.

It's been brought up a few times before, but nobody ever pursues it. The best thread I've seen about it starts here:
https://forums.macrumors.com/thread...c-card-with-boot.2013709/page-2#post-23942507

If I didn't already have a flashed card, I'd try this in a heartbeat.

Hi and thanks for your post, can I test-drive this with my Mac EFI flashed GTX-680-FTW-4GB? Have to re-flash back to the original ROM obviously.

How about drivers in Mac OS X 10.10.5 / Windows 10 Pro?

Cheers
 
Clover is an EFI bootloader for hackintoshes. Reportedly it initializes PC graphics cards on a real cMP too, therefore you'd have boot screens. When the news broke out here, only one person tried it but then he got too busy with other projects to finish.

I am just astonished, with all the problems associated with not having boot screens, and the cost of paying for a flash, why there aren't more people trying it out. It's literally free, and if it doesn't work you can uninstall it.

https://sourceforge.net/projects/cloverefiboot/

Apparently it also has USB 3.0 drivers, so you could have USB 3.0-based boot drives on cMPs too, which you can't do otherwise.

It's been brought up a few times before, but nobody ever pursues it. The best thread I've seen about it starts here:
https://forums.macrumors.com/thread...c-card-with-boot.2013709/page-2#post-23942507

If I didn't already have a flashed card, I'd try this in a heartbeat.

Aha, thanks for the info – I didn't know this could bring a boot screen to non-flashed graphics on a Mac Pro. I used Clover when I ran a Hackintosh previosly. Will try to give this a shot, but also have very little spare time nowadays…
 
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Hey, general consensus: THis will work to bridge an Apple LED mdp monitor to a DVI NVidia GPU, right?

https://www.newegg.com/Product/Prod..._to_dvi-_-12-117-618-_-Product&recaptcha=pass

No, e.g. this works:
AT-DP400.jpg
 
What's the difference, other than the Altona one is no longer available except for aftermarket resellers and costs 5x the price?

Crap, I just saw AM's post after this one...

Here is one that claims to be in stock:
https://www.amazon.com/StarTech-com-Mini-DisplayPort-Adapter-Audio/dp/B005F4SKIU

However, the adapter is limited to 1200p. I'm not too familiar with ACDs, but I think that adapter would be suitable for a 24" LED Cinema Display, but not the 27" which is 1440p. Double check of course since I am just some random anonymous guy on the Internet.
 
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Here is one that claims to be in stock:
https://www.amazon.com/StarTech-com-Mini-DisplayPort-Adapter-Audio/dp/B005F4SKIU

However, the adapter is limited to 1200p. I'm not too familiar with ACDs, but I think that adapter would be suitable for a 24" LED Cinema Display, but not the 27" which is 1440p. Double check of course since I am just some random anonymous guy on the Internet.
Well, I trust this random group of internet dudes! That one's 80 bucks.... I'd be better off getting a new GPU that has DP with an mDP to DP adapter. The problem is NVidia still has not brought pascal to Mac....
 
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I'm using two monitors without any issues, I have a GTX 980 and it drives both displays just fine. Still worth trying one monitor only to see if that helps, though.

I know this is jumping back in the thread a few months but I just got a Mac Pro and upgraded to a GTX 980. My first monitor is connected through HDMI and it works fine. As soon as I plug in the second monitor using a DVI to VGA adapter the HDMI monitor goes black and the other monitor never gets a signal. I thought the HDMI connected monitor was just going black but I wasn't ever able to get the HDMI connected monitor to turn on again even after unplugging the second monitor. Apparently it is actually causing a kernel panic because after I restarted the computer a panic log popped up. Has anyone experienced? If anyone is successfully using multiple monitors on a GTX 980, what ports are you using?

Mac Pro 5,1 running macOS 10.12.3 and NVIDIA Web Driver 367.15.35f01
 
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only older versions of osx work with VGA, think it was dropped in osx10.12 i think
 
^^^^Then aren't you using the DVI output on your card, and the adapter is converting the signal to analog? But, I have a question. Why is anyone still using VGA? I can't remember the last time I used VGA? Have they made any cards in the last 5 years with VGA outputs?

Lou
 
^^^^Then aren't you using the DVI output on your card, and the adapter is converting the signal to analog?

It depends.

A DVI-D connector is just digital DVI.

A DVI-I connector looks very similar, but it contains both digital DVI signals and analog VGA signals. It is really one connector for both DVI and VGA. A simple DVI-to-VGA adapter is completely passive--it just wires the right pins from the DVI-I connector to the right pins on a VGA connector and that's it. No conversion of signal.

Note the extra pins on the DVI-I connector.

kb221_2.jpg
kb221_1.jpg
 
Hi all, just signed up to share my anecdotal experience for what help it may be to someone. Early 2008 Mac 3,1. Dual 2.8 Quad. GTX 950 SC+ VS GTX 780

TLDR; GTX 950 SC+ has proven cooler and more stable than a GTX 780 with little or no impact on gaming.

I stole a reference GTX780 from my outgoing Windows machine and set this up alongside the original ATI card on a Panasonic 4k TV. I took 1x 6pin power cable from the motherboard, and removed the DVD drive to use a 2x Molex adaptor to 8pin power cable for the other power input. Even the stock ATI card won't always show the startup manager on this display... frustrating at times.

Running Passmark on the 780 in my Windows machine (i5 3570k, Asrock Z77 Extreme 4, PCIE 3.0, Windows 8.1), I got a 3d score of >8,000. The same card in Bootcamp (Windows 7) in the mac scored a little over 6,200 over all tests. The card was overclocked in both tests. In bootcamp the graphics driver was crashing fairly often, didn't matter if I was overclocking or not, didn't really mess around with the drivers to attempt to correct this.

NOTE: Whether its related or not, within a week of using this configuration one of the HDD bays stopped working (#2). Switched drives around to confirm it was the drive bay and not the drive itself. Gaming performance was significantly reduced compared to the Windows box, presumably because of the PCIE 1.1 limit (Stock PC card) but also I note that Core 1 of the CPUs was hitting 100% at times. The two machines are very different so obviously other factors like bus and ram speed are at play here too.

When I first got this 3,1 it had an EVGA 950 SC+ in it which only required 1x6pin power cable so I switched back to that to compare gaming performance etc. This card only scored <4,900 in passmark in bootcamp compared with 6,200 from the 780. Regardless the impact on gaming (Fallout 4, DX 11 specifically) wasn't significant even in busy areas like Diamond City. This 950 seems far more stable with no driver crashes so far, and much cooler in that very warm and cramped case with dual fans aboard. The 950 idles <40c as opposed to >60c for the 780 reference. (Thats with a significant OC too)

One last point, with a suitable Display Port to HDMI adaptor I was able to get 4k 60hz in El Capitan with the 780 but only 4k 30hz with the 950, not a deal breaker since I still get 4k 60hz in bootcamp with both. Both cards got a solid 60fps at 4k on earlier games like Mass Effect or Fallout 3 but fallout 4 will dip to 30fps at 1080p in busy areas.

Thanks to all in this forum who have shared their knowledge and experience!
 
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In the RX480 thread, someone mentioned that he can use terminal to update the OS, and then perform the kext mod, and then restart the Mac. Therefore, the RX480 can function normally on the 1st boot after OS update.

I am wondering if this also possible for Maxwell card. e.g.

1) wait until Nvidia release the driver
2) perform the update in terminal
3) install the new driver
4) reboot

The biggest hurdle I think is step 3. The installer will check the "current" OSX version. If there is any method to bypass that check. The above method should work.
 
The installer will check the "current" OSX version. If there is any method to bypass that check. The above method should work.
The last time i used the drivers was on Hackintosh in Yosemite so i don't know if anything changed but it was simple edit of the NVDARequiredOS line in the NVDAStartup.kext.
Don't remember if there was a need to edit Distribution file for the build version (or just deleting lines with hardware/software check (i was on MacPro3,1 identifier, so i had to edit hardware check, but i think nVidia don't do that anymore in WebDrivers)
if (!validateHardware()) return false;
if (!validateSoftware()) return false;
)

I've always used Pacifist for extracting but think that pkgutil --expand also works with it.
 
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