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Correct. This does NOT provide a boot screen.
You can buy EFI flashed cards on eBay or from MacVidCards

And I assume there isn't any post explaining how to do it yourself right? Again thanks for clarifying this, it helps to know.
 
Being dumb here, but I'm helping out someone here with upgrading his 5,1 Mac Pro. From my understanding, this still won't allow for the GPU to show the boot screen at startup? Really need to know since he depends on it. Thanks!

Why he need boot screen?
 
From memory, HS, anyway, that's for RX580, not HD7950.
Ok so for the 580, one should be able to take a PC version, install into a Mac running HS or Catalina, and get a boot screen without having to flash the card's bios?

Just want to make sure I understand.
 
i am running Mojave is this possible also ?
You can, but the question become why.

This whole thread is basically depreciated.

We prefer NOT to flash the RX580 nowadays, but use OpenCore to inject whatever we want.

By using OpenCore, we can get boot screen, HWAccel, and Orinoco framebuffer without flashing the card. So, there is no point to flash the RX580 anymore.
 
You can, but the question become why.

This whole thread is basically depreciated.

We prefer NOT to flash the RX580 nowadays, but use OpenCore to inject whatever we want.

By using OpenCore, we can get boot screen, HWAccel, and Orinoco framebuffer without flashing the card. So, there is no point to flash the RX580 anymore.
OK you are right when i get the chance i will install open core .
Happy new Year !
 
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We prefer NOT to flash the RX580 nowadays, but use OpenCore to inject whatever we want.

By using OpenCore, we can get boot screen, HWAccel, and Orinoco framebuffer without flashing the card. So, there is no point to flash the RX580 anymore.
Just with WEG or are using any settings to get those? If you don't mind could please share your config.plist with me?
 
Just with WEG or are using any settings to get those? If you don't mind could please share your config.plist with me?
Code:
<key>PciRoot(0x0)/Pci(0x3,0x0)/Pci(0x0,0x0)</key>
            <dict>
                <key>@0,name</key>
                <data>
                QVRZLE9yaW5vY28=
                </data>
                <key>ATY,EFIVersion</key>
                <data>
                MDEuMDEuMTgz
                </data>
                <key>CFG,CFG_FB_LIMIT</key>
                <data>
                BQ==
                </data>
                <key>CFG,CFG_PTPL2_TBL</key>
                <data>
                ggAAAHwAAAB2AAAAcAAAAGoAAABkAAAAXgAAAFgAAABS
                AAAATAAAAEYAAABAAAAAOgAAADQAAAAuAAAAKAAAAA==
                </data>
                <key>PP,PP_PowerPlayEnabled</key>
                <data>
                AQAAAA==
                </data>
                <key>PP,PP_WorkLoadPolicyMask</key>
                <data>
                CA==
                </data>
                <key>agdpmod</key>
                <data>
                cGlrZXJhAA==
                </data>
                <key>device_type</key>
                <string>VGA compatible controller</string>
                <key>model</key>
                <data>
                QU1EIFJhZGVvbiBSWCA1ODA=
                </data>
                <key>rebuild-device-tree</key>
                <data>
                AA==
                </data>
                <key>shikigva</key>
                <data>
                UA==
                </data>                
               <key>unfairgva</key>
                <data>
                AQAAAA==
                </data>
            </dict>
 
Last edited:
Code:
<key>PciRoot(0x0)/Pci(0x3,0x0)/Pci(0x0,0x0)</key>
            <dict>
                <key>@0,name</key>
                <data>
                QVRZLE9yaW5vY28=
                </data>
                <key>ATY,EFIVersion</key>
                <data>
                MDEuMDEuMTgz
                </data>
                <key>CFG,CFG_FB_LIMIT</key>
                <data>
                BQ==
                </data>
                <key>CFG,CFG_PTPL2_TBL</key>
                <data>
                ggAAAHwAAAB2AAAAcAAAAGoAAABkAAAAXgAAAFgAAABS
                AAAATAAAAEYAAABAAAAAOgAAADQAAAAuAAAAKAAAAA==
                </data>
                <key>PP,PP_PowerPlayEnabled</key>
                <data>
                AQAAAA==
                </data>
                <key>PP,PP_WorkLoadPolicyMask</key>
                <data>
                CA==
                </data>
                <key>agdpmod</key>
                <data>
                cGlrZXJhAA==
                </data>
                <key>device_type</key>
                <string>VGA compatible controller</string>
                <key>model</key>
                <data>
                QU1EIFJhZGVvbiBSWCA1ODA=
                </data>
                <key>rebuild-device-tree</key>
                <data>
                AA==
                </data>
                <key>shikigva</key>
                <data>
                UA==
                </data>
            </dict>
is your RX 580 Sapphire or a different brand?
 
It is actually DELL OEM RX-580 which shares the hardware of the reference RX-480. I have 4 ports: 3DP and 1 HDMI. One of the DP will not work with this setup.
I am looking for a second-hand Sapphire Pulse but there is always the Nitro version. are these the settings you send works with also Sapphire Nitro?
 
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