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MP 1,1-5,1 GPU Compatibility List for cMP

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blackmagic.png


This card: https://www.amazon.com/dp/B0D47B2W75

Not true PXL but it's faking it somehow.
 
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VaZ said:
The logic is simple, he already invested into everything for a MP 5,1 so why not invest a little more to it on the cheap instead of a whole new machine? It doesn't have to be Squid brand, the quad pcie cards are cheap now and so are nvme blades.
PS - Catalina doesn't need OC.
Click to expand...
Catalina doesn't need Opencore on the 5,1? Seriously?
 
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mode11 said:
There comes a point though where it doesn’t make sense to continue investing in an old computer.
Click to expand...
You're not wrong, but this thing would really be ****ing right now if not for the video crash problem!!! And then I could get by with pretty mid spec new laptop. 1TB of storage would be plenty. I already have a USB2 card. I had one of those Thunderbolt cards for a while (Titan card or something...can't think of the name) but having to boot through windows to get it up and running was a bit much.
 
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AppleDrank said:
This card: https://www.amazon.com/dp/B0D47B2W75

Not true PXL but it's faking it somehow.
Click to expand...

The Amazon page says it’s using a PLX 8747. It would have to be using something like that - your numbers would be impossible otherwise; there’s no way to ‘fake’ them. The reviews all seem positive, albeit with some grousing about fitting the heatsink.

The drive itself should be capable of 2-3x those speeds, but perhaps the card can only deliver that when using RAID arrangements.
 
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mode11 said:
The drive itself should be capable of 2-3x those speeds, but perhaps the card can only deliver that when using RAID arrangements.
Click to expand...
The NVMe is PCIe gen 4 but the PCIe bridge of the PCIe card is only PCI gen 3.

You need a PCIe gen 4 bridge to get PCIe gen 4 speed from the NVMe in a PCIe gen 3 or gen 2 Mac.
for example, the HighPoint SSD7505 has a PEX88048 PCIe gen 4 bridge.
https://forums.macrumors.com/threads/pcie-ssds-nvme-ahci.2146725/post-29483973

Or like you said, a software RAID could be created to fill the bandwidth of the PCIe gen 2 slot from a single file system.
 
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AppleDrank said:
Thx for the tip re Catalina, I'm not sure what it would buy me to upgrade though as Catalina is also unsupported.

Why does your signature sayyour computer is "Catalina-Sequoia."
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👍🏻 I just meant that's how Catalina can be installed if not with OCLP, but i strongly recommend you install Mojave on a spare drive and test your Quicklook there.
My signature means i have Catalina-to-Sequoia installed and running peachy smooth!
 
I tried installing Catalina with the Dosdude patch yesterday but I couldn't get it figured out. My video card doesn't have a bootscreen so I couldn't select the USB to boot off of 🙁

I did something interesting that maybe isolates the Preview = video crash problem. I can open the problem PDF in Preview and scroll around no problem as long as I put the monitor in 2560x720 first 🙁
 
VaZ said:
👍🏻 I just meant that's how Catalina can be installed if not with OCLP, but i strongly recommend you install Mojave on a spare drive and test your Quicklook there.
My signature means i have Catalina-to-Sequoia installed and running peachy smooth!
Click to expand...
I can't even find an RX 5700 XT to try 🙁
 
AFAIK, some of the most problematic PDFs are assembled from screenshots of text messages (lawyers love this) and so you can get really complicated PDFs. Sometimes the PDFs also require extreme zoom to read. With the multiple layers, scrolling around and zooming, I think it can wind up calling on the video card to render more pixels than the card can do. When you're zoomed in on a fraction of a page, the card is trying to render everything that would be possible to see if you had a very, very, large monitor. The script is multithreaded, and tests PDFs for the risk they pose, and if it finds one over the threshold you set (medium, and high risk, and the scores for each are configurable), and if it comes across one over the threshold, it creates a new rasterized version that includes appending _rstr.pdf, and renames the originals by appending _DANGER.
 

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From my experience, running two monitors connected to the Saphire RX580 is a big problem... the famous black screen's! Not only resolution but the handshake stuff... and that's a lot to achieve.

Better Display App help a little but, for my experience, using HDMI, DVI and DP, when using two monitors, is always a matter of time to have black screen... two months stable, and black screen, sometimes, two weeks and black screen... no flashed card here... i tried another monitor and worse, of course.

One monitor only it's fine, already bought a new one, using the old 24 inch and the new one is the same... no black screen's.

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It's a lot of going on with the output signal and old protocols.... give up the two, for now.

Love the Mac Pro, and plan to use until is death (hope in a long time) but waiting for the new M5 in a few months... it's a kind of thing that i don't have time to.... and a Silicon beat a hell of to this old good machines
 
MurdockMan said:
From my experience, running two monitors connected to the Saphire RX580 is a big problem... the famous black screen's! Not only resolution but the handshake stuff... and that's a lot to achieve.

It's a lot of going on with the output signal and old protocols.... give up the two, for now.
Click to expand...
Your problems must stem from ProTools (or unsupported OS). Misread your post sorry
I ran 2 QHD Dell displays for many years on my cMP RX580 Pulse in Sierra/HighSierra/Mojave with zero issues.
 
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Mine are old ones:

ACER AL2423W

They only have DVI and VGA output, need to convert to HDMI or DP, and that's one of the main reasons.

Using one is fine, when the second is connected the PCI fan kick's in and after 2 or 4 minutes black screen.

Already keep the system stable for 2 months with both monitors, so is a kind off sad to going back to unstable image screen's, didn't find a direct cause, to many possible causes...

Tried all the cables possible and connections in the Saphire.
 
MurdockMan said:
Mine are old ones:

ACER AL2423W

They only have DVI and VGA output, need to convert to HDMI or DP, and that's one of the main reasons.

Using one is fine, when the second is connected the PCI fan kick's in and after 2 or 4 minutes black screen.

Already keep the system stable for 2 months with both monitors, so is a kind off sad to going back to unstable image screen's, didn't find a direct cause, to many possible causes...

Tried all the cables possible and connections in the Saphire.
Click to expand...
You do have both power connectors connected to the MB.
 
Yes!

Never tried this stuff:

Removing this Boot Args:

-lilubetaall
-btlfxallowanyaddr

Read somewhere that help a lot in two monitors configuration
 
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