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AMD Radeon RX 580 works in macOS

Jayson A said:
It seems like they reach the thread. There's plenty of room, they just won't screw in for some reason. I start screwing them in and it gets really tight. Usually they just hand screw in pretty easily.
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If they didn't reach the thread they would never reach the thread of any card or port, which doesn't sound like the case. I suspect that the threads are a different "pitch" or "count", basically how thick and how many wraps the threads are on the screws as well as the female holes. Could be the difference of metric and imperial between the cards female holes and the cables male screws. its likely a difference between the male and female threads not being an appropriate fit
 
skizzo said:
If they didn't reach the thread they would never reach the thread of any card or port, which doesn't sound like the case. I suspect that the threads are a different "pitch" or "count", basically how thick and how many wraps the threads are on the screws as well as the female holes. Could be the difference of metric and imperial between the cards female holes and the cables male screws. its likely a difference between the male and female threads not being an appropriate fit
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I thought they were all universally the same. Hmmm
 
I am sure there is some universal standard, whatever that size is, diameter and thread pitch/count wise. during any manufacturing process, even with a good quality check process can still let less than perfect products out into the market. but im just taking a stab in the dark since if the male screws are long enough to reach the female threads, then the only thing preventing them from threading together is they are not close enough to their intended spec to fit. and if you fit those male screws into other ports, then it is most likely the female threads on the GPU's DVI port. all it takes is one guy to go "meh, close enough" during his shift and let a single part, or whole batch of parts go even if they are out of tolerance/spec. did you get the card used? could be the previous owner accidently stripped them (likely yanking on cable before screws were fully removed or cross threading) and that would create the same issue
 
skizzo said:
I am sure there is some universal standard, whatever that size is, diameter and thread pitch/count wise. during any manufacturing process, even with a good quality check process can still let less than perfect products out into the market. but im just taking a stab in the dark since if the male screws are long enough to reach the female threads, then the only thing preventing them from threading together is they are not close enough to their intended spec to fit. and if you fit those male screws into other ports, then it is most likely the female threads on the GPU's DVI port. all it takes is one guy to go "meh, close enough" during his shift and let a single part, or whole batch of parts go even if they are out of tolerance/spec. did you get the card used? could be the previous owner accidently stripped them (likely yanking on cable before screws were fully removed or cross threading) and that would create the same issue
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Got it brand new. I'll check it again tonight to make sure everything is seated properly. It could be user error... I dunno.
 
Sapphire Pulse RX-580 8 GB works properly out of the box in 10.13.4 - and is even identified correctly.

Now, about that boot screen . . .
 
h9826790 said:
No, flashing the card won't help.

The work around is to run Luxmark for 10-15s after boot. You can auto load that after login if you want to. It's a known bug for 4,1 or flashed 5,1. It seems SMC related (that's why real 5,1 is not affected).

Another work around is use MacsFanControl to setup your own fan profile. e.g.

PCIe fan base on PCIe ambient, min 38, max 58

PS fan base on PS 2 temperature, min 36, max 58

Since MacsFanControl alter the fan profile by inserting the target fan speed. That will completely override the SMC fan setting.

Of course, you can use / write any software to do that as well as long as you can control the PCIe and PS target fan speed. However, AFAIK, there is no fan control software alter the target fan speed like MacsFanControl does. All others are altering the min fan speed, which is good for general use, but unable to fix this high idle after boot. Therefore, you practically has no choice unless you write / mod another fan control software for your own use.

If you only boot once every few days or even weeks, I suggest the Luxmark method. (Unless you want a cooler PSU etc)

If you boot few times a day, then MacsFanControl method should work better (but it will take up tiny bit CPU resources).

You may also try SMC reset. I tested this method. If you keep trying, the fan will eventually go back to normal (may need >10 attempts), but the bug usually come back in jut few reboot. So, not worth to do so.
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Running into this issue right now with an RX 480 in a flashed 4,1...
 
D.W.A said:
How long does the BruceX test take for you?

I have dual 580's but never got lower then 25 seconds in Public Beta 5 Sierra (10.12.6) and PB4 (I think) in High Sierra.

At one time is was down in 21 sec with ONE 580, but when I installed the second 580 it actually got higher.
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Are you running the dual 580s on a 5.1? Does the second card require external power?
 
h9826790 said:
You need 2 cables

1) dual mini 6pin to 8pin (NOT your single mini 6 -> 8)

2) 8pin female to dual 6+2pin

Then your card will work fine. The idea is to share the loading between 2 mini 6pins, TDP is not an issue. However, heavily rely on one of the 6pin is the real problem.

Your assumption is wrong. The card never really get 75W from the slot, and never get 75W from the 6pin. If you believe that will happen, then why it won’t get full 150W from the 8pin? In reality, the card will try to get power from the 8pin first, because it should has highest capacity. Once it draw ~120W, it will trigger the shut down protection.

With my suggested cable combination, use a single 8pin as the bridge, it will evenly distributed the loading, and keep the current on each mini 6pin below the shutdown protection limit.
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Ok i'm in this situation and i hope this will help me out, I have an Asus Radeon RX 580 8gb OC edition card, what is the best way to connect the power to this card, if i understand you correctly, i need to buy 1 dual mini 6pin to 8 pin, and one 8 pin female to dual 6+2 pin ? on this card i only have 1 4 pin plug to connect to, would this apply to me?
 
BlackScorpion said:
Ok i'm in this situation and i hope this will help me out, I have an Asus Radeon RX 580 8gb OC edition card, what is the best way to connect the power to this card, if i understand you correctly, i need to buy 1 dual mini 6pin to 8 pin, and one 8 pin female to dual 6+2 pin ? on this card i only have 1 4 pin plug to connect to, would this apply to me?
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Single 4pin? Please post the picture here.
 
h9826790 said:
Single 4pin? Please post the picture here.
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This is what i'm referring to.

img_2110.jpg


This is the label on the box:
img_2111.jpg
 
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you can use a dual mini 6 pin to a standard 8 pin cable (all male plugs on the cable)

another alternative, but likely a few $ more due to more individual cables, is to use two separate mini 6 pin to standard 6 pin cables (male plugs on these cables), and then a dual FEMALE 6 pin to MALE 8 pin

example links


https://www.amazon.com/COMeap-Expre...&sr=8-3&keywords=mini+6+pin+to+standard+6+pin

or the alternative

https://www.amazon.com/COMeap-Expre...-3&keywords=mini+6+pin+to+standard+6+pin&th=1

AND

https://www.amazon.com/GutsParker-6...fkmr1&keywords=dual+mini+6pin+to+single+8+pin
 
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BillyBobBongo said:
I think you'll find that's an 8-pin, and not a 4-pin, power connection. Let's get some help from a friend of mine to be sure...
View attachment 814834
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LOL... AHH yes sorry my bad, was thinking if the connector itself , when composing my post.

@skizzo, Thanks, i ordered the first one.

While i'm at it, what would be the best OS to run this setup? I'm currently on 10.13.6 would Mojave offer me more? (ps i do love the dark mode :) )

screen12.png
 
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BlackScorpion said:
LOL... AHH yes sorry my bad, was thinking if the connector itself , when composing my post.

@skizzo, Thanks, i ordered the first one.

While i'm at it, what would be the best OS to run this setup? I'm currently on 10.13.6 would Mojave offer me more? (ps i do love the dark mode :) )

screen12.png
Click to expand...

YMMV, but Mojave is the most stable OS for me so far, better than anything since 10.6.8. And it’s performance is definitely beyond 10.6.8 due to much better GPU support, and designed to run with SSD.
 
No problem with 10.14.2 + RX580.

You may try switching between 8bit and 10bit to check if that make any difference. I am with 10bit.
 
Update. Installed the card and booted up with no issues it's showing the card model correctly., I hAve no boot screen, but it's not a problem for me. I'm in the process of installing Mojave, hope all goes well. Will keep ya posted.

OK so after an hour of Mojave installation , im proud to say i have successfully upgraded!
screen13.png


Now can someone tell me what this pci1002,aaf0 is?
 
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