Whoo hoo! Installed a Radeon RX Vega 64
Replaced my MSI Radeon RX 580 with a SAPPHIRE Radeon RX Vega 64 after I flashed the Vega 64 with the Sapphire Nitro+ RX Vega 64 (standard PCB): SECONDARY Bios 113-D0500110-S01. Note: the Primary BIOS does nothing.
The flashing process I used is demonstrated in THIS VIDEO the card was installed in a Dell PC with Win 7 Pro running.
The card is powered by the Mac Pro Pixlas Mod.
With the Nitro Secondary Bios fans run as expected:
#1 Fans run fast pre post at boot up, then slow down and stop (0 RPM) when at idle, not under load.
#2 The fans spin up under load, such as in LuxMark and slow down and go back to idle (0 RPM) after LuxMark is completed and some time has passed.
#3 I have not had any need so far to run a H.265 video or sleep to trigger the fans to slow down.
#4 Sleep and wake work as expected.
#5 All output ports work as expected.
#6 The "BLUE Logo light option" seems to not work in OSX, only Windows? In OSX it is RED.
The card is the reference design, occupies only two slots and when installed in slot #1, slot #2 is still available. It totally fits, being the same length and slightly narrower than my MSI RX 580 card.
Got it on sale on BlackFriday NewEgg/Ebay sale for $339.99.
The System specs with Mojave 10.14.1
Mid 2010 Mac Pro 5.1 Dual 3.46 X5690 64GB Ram Boot ROM Version: 140.0.0.0.0
Slot 1 SAPPHIRE Radeon RX Vega 64 connected via DVI-D to Dell UltraSharp U2412M and a Wacom Cintiq 22HD via HDMI
Slot 2 OWC Accelsior S PCIe + WD Blue 1TB Internal SSD Solid State Drive - SATA Boot drive.
Slot 3 Ableconn PU31-1A1C USB 3.1 Gen 2 (10 Gbps) Type-C)
Thanks to:
MisterAndrew
bgdre12
fireedo
AlexMaximus
PS: I hope OP can update the first post. I found the info written there on flashing to be confusing. IMHO a reference design card is the best MacPro Vega solution, since it is more compact than others, and the fans seems to work as expected after flashing.
Thanks for the clear explanation.
I just got my Vega 64 Sapphire RX working with the BIOS flash instructions above.
System specs:
High Sierra 10.13.6
Mac Pro (Mid 2010)
Processor 2 x 3.33 GHz 6-Core Intel Xeon, 32GB RAM
Radeon 5770 (for boot screen), Vega 64 sapphire RX
With the Nitro+ Vega 64 secondary BIOS flash, the fan is off at rest. I just get an occasional, brief fan burst here and there. Fan powers on appropriately with video editing and games. Fortnite runs better on the Nitro+ BIOS than either of the factory BIOS shipped with the card (nearly stable 60fps on high settings, full resolution output to 2010 27" cinema display).
I used Windows bootcamp running on my Mac Pro to flash the Vega 64 with new BIOS. It was kind of pain - needed to boot with monitors plugged into the Radeon 5770 and Vega 64 to get output each time booting with new vega BIOS (windows installing drivers?). Windows boots fine straight from Vega 64 afterwards.
My Vega 64 is powered with a 750W external PSU. I bought a cheap Bronze Cooler Master, but will be returning for something more robust (this PSU makes a weird clicking noise at high load). Tried a 500W EVGA which caused the system to shutdown shortly after booting.