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ashman70

macrumors 6502a
Original poster
Dec 20, 2010
977
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I just bought a used Sapphire Radeon RX 580 for my cMP as well I havea NVMe drive in a PCIe adapter. I am going to put the GPU in slot one, would it make sense to put the NVMe in slot 2 if it will fit, or should it go in 3 or 4? Right now I have a traditional SSD on a PCIe card I that I am booting off of, eventually I want to boot off the NVMe.
 
I just bought a used Sapphire Radeon RX 580 for my cMP as well I havea NVMe drive in a PCIe adapter. I am going to put the GPU in slot one, would it make sense to put the NVMe in slot 2 if it will fit, or should it go in 3 or 4? Right now I have a traditional SSD on a PCIe card I that I am booting off of, eventually I want to boot off the NVMe.
Unless you are using a switched PCIe adapter for multiple M.2s, don't matter the slot you are using since all M.2 devices are x4 or less.
 
No, it was not.
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Keep in mind, the RX 580 is a dual slot card. It also will require an additional power source, unlike the RX 560.
Thank you, yes I am aware of the power requirements and the size of the card.
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Keep in mind, the RX 580 is a dual slot card. It also will require an additional power source, unlike the RX 560.
Thank you, yes I am aware of the power requirements and the size of the card.
No, it was not.

It's this adapter
 
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61EYtHafIZL._AC_SL1000_.jpg

it's a x4 adapter made to be installed with x4/x8/x16 slots. You can see that the data lines go only for the x4 slot.

All M.2 devices are x4 or less.
 
So did I screw up? I bought a Sapphire Nitro+ 580, and just reread a thread where tsialex recommended against buying this card? Will a dual pin to sing 8pin adapter not be enough to power this card?
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Keep in mind, the RX 580 is a dual slot card. It also will require an additional power source, unlike the RX 560.
I thin I misread your post, can I not power the card from the dual 6 pin connectors in the system with a dual 6 pin to single 8 pin adapter?
 
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So did I screw up? I bought a Sapphire Nitro+ 580, and just reread a thread where tsialex recommended against buying this card?
It's a really bad choice for a MP5,1. It's a 2.3 slots wide card and when running Furmark or something really stressful, this card can use up to 262,5W (175W x 1,5 PowerTune), with typical load use around 237W. So, it's a card that usually triggers the backplane overcurrent limit when in load.
Screen Shot 2020-01-11 at 12.05.43.png


Some people here got it working, you don't run Furmark all the time, but if you ask, a lot of people will tell you to don't use this card.
Will a dual pin to sing 8pin adapter not be enough to power this card?
No.
 
All I plan on doing with the system other then day to day tasks is running FCP.
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Would this be a better choice then?
 
All I plan on doing with the system other then day to day tasks is running FCP.
I wouldn't use it at all, it's a PC overclockers card. Like I said, some people got it working, others don't.
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All I plan on doing with the system other then day to day tasks is running FCP.
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Would this be a better choice then?
It's the card that Apple recommends, even so it's a 2.2 slots wide card and will block slot-2 for a lot of cards. No modern GPU is perfect, all have flaws when you think of a MP5,1.

There are workstation GPUs with performance similar of a RX-580 and will fit perfectly size and power wise - like the WX5100, but it's a card that costs more than the double of a RX 580.
 
OK I think I will return this and get a Sapphire Pulse Radeon RX 580, I think this is an officially recommended card by Apple.
 
the sapphire pulse RX580 8GB works well in a real 5,1 and you can use
slot2 if you put a little spacer between the two cards.

this does not work well in a 4,1 !

see the difference of booth enclosures:

5.1.jpg



4.1.jpg



but I don't know where the difference comes from

it's the same card i testet
 
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