Become a MacRumors Supporter for $50/year with no ads, ability to filter front page stories, and private forums.

oshamos

macrumors newbie
Original poster
Nov 1, 2016
6
2
Hello,

I purchased a RX 580 Nitro+ online from eBay hoping for a macOS compatible GPU for my Mac Pro.

The GPU might be a fake.
I am attaching the information necessary for identifying the card's current vbios in hopes of finding a vbios candidate to cross flash the card.
Please let me know if I am missing anything.

Do you just look for a card with the closest matching chip, memory and timings?
 

Attachments

  • gpu-z.gif
    gpu-z.gif
    25.2 KB · Views: 56
  • mem timings.gif
    mem timings.gif
    27.3 KB · Views: 34
  • amdvbflash-i.png
    amdvbflash-i.png
    22.5 KB · Views: 22
  • amdvbflashWN.png
    amdvbflashWN.png
    30.5 KB · Views: 23
  • IMG_0379.JPEG
    IMG_0379.JPEG
    381 KB · Views: 30

oshamos

macrumors newbie
Original poster
Nov 1, 2016
6
2
RX580 2048SP is a Chinese-market exclusive model.

It's basically an RX570.
I have read that on other boards. Someone told me it was likely a fake card. If it's just an SKU for a specific market I feel less worried about it and I am fine with lower performance. So if it would be possible to flash with RX 570 vbios and boot normally I would be happy to have a working card.
I would be happy with anything that gives a boot screen. If this card is somehow not compatible I might try to return it.
 

ryanmkincaid

macrumors newbie
Aug 18, 2018
15
1
Brooklyn
Hey @oshamos I'm in the same position. I just purchased a "slightly used" RX 580 but now that I have it in hand, I suspect it's a counterfeit card as well. The item came in box and the seal was clearly intact. I'll have to run those checks to see if I generate similar numbers. I doesn't have the Chinese sticker like your image does, however. I'll try to upload images once I get the power cable (should be here tonight).
 
  • Like
Reactions: oshamos

oshamos

macrumors newbie
Original poster
Nov 1, 2016
6
2
Hey @oshamos I'm in the same position. I just purchased a "slightly used" RX 580 but now that I have it in hand, I suspect it's a counterfeit card as well. The item came in box and the seal was clearly intact. I'll have to run those checks to see if I generate similar numbers. I doesn't have the Chinese sticker like your image does, however. I'll try to upload images once I get the power cable (should be here tonight).
Hey, I got macOS to boot using this vBIOS below.
The card worked ok in Windows but had issues, I didn't really want it for that use case anyway.

I would say this is a card that was most likely used in mining if yours came sealed that's a whole different ball of wax. Do not despair, yet.

I am thinking about returning the card but the seller seems hesitant.

 
  • Like
Reactions: Ninetailedfox

Ninetailedfox

macrumors newbie
May 2, 2023
3
1
Manila, Philippines
Hey, I got macOS to boot using this vBIOS below.
The card worked ok in Windows but had issues, I didn't really want it for that use case anyway.

I would say this is a card that was most likely used in mining if yours came sealed that's a whole different ball of wax. Do not despair, yet.

I am thinking about returning the card but the seller seems hesitant.

Hello, I got Sapphire RX 580 how did you flash yours with RX 570? Sorry I am noob.
 

oshamos

macrumors newbie
Original poster
Nov 1, 2016
6
2
Hello, I got Sapphire RX 580 how did you flash yours with RX 570? Sorry I am noob.
Don't just flash your card. Preserve your factory vbios.
Do research if this is necessary for you. My card has 2048sp in the name of the card. I wasn't aware this was a count of the shaders in the card and reflected a chinese only SKU. If you have a pulse 580 it's probably legit and you should be reading about opencore legacy patcher for using outdated macs.
 
  • Wow
Reactions: Ninetailedfox

Ninetailedfox

macrumors newbie
May 2, 2023
3
1
Manila, Philippines
Don't just flash your card. Preserve your factory vbios.
Do research if this is necessary for you. My card has 2048sp in the name of the card. I wasn't aware this was a count of the shaders in the card and reflected a chinese only SKU. If you have a pulse 580 it's probably legit and you should be reading about opencore legacy patcher for using outdated macs.
I already flashed my Sapphire RX580 2048SP(Chinese Version) to Sapphire RX570 bios and it work flawlessly with my MacOS Ventura and Win11 :)

0.png
 
Register on MacRumors! This sidebar will go away, and you'll see fewer ads.