No, that post / method good for all versions of High Sierra.I have a 10.13.6, if I do a downgrade via terminal, will I have a problem, such as not being recognized?
No, that post / method good for all versions of High Sierra.I have a 10.13.6, if I do a downgrade via terminal, will I have a problem, such as not being recognized?
Many suggest in their MacPro1,1 flashing tutorials that you should put the original card back into the machine to do the MacPro2,1 and SMC flashes. I didn't bother swapping in my 7300 GT, since my Radeon 5770 Mac version works fine on that machine at boot up even in Lion. The flashes worked fine with the 5770 in place.
Yes I read something about that earlier.simply because what i requested - if you read well - is to have a EFI based card... which the 5770 is...
Hmm Interesting, than you. This is the first time I read up on it.You need additional power just to power the Vega 56.
You can use SATA ports.So currently I have a Sapphire Radeon RX 580 which I'm very happy with - it's powered by an 8pin to dual 6 pin adapter.
I was entertaining the idea of potentially adding a second card to my 4,1->5,1, which I don't think is possible given the power requirements of this card.
Without doing a Pixlas mod, is something like this even possible? I could use additional power from my SATA optical drives since I rarely use those anyway.
You can use SATA ports.
Or you can simply downvolt the RX580, which can make it draws noticeably less power, and able to be powered by a single mini 6pin (except Furmark).
Sapphire PULSE RX580 8GB VBIOS Study
*** For info, this mod is NOT compatible with the OpenCore boot screen mod *** This thread is about how to mod the Sapphire PULSE RX580 8GB card's ROM image. If you worry about bricking the card, or void the warranty etc. STOP HERE! For those who has MVC flashed RX580. Do NOT perform this mod...forums.macrumors.com
However, this mod will disable the GOP, which means, you card can no longer display boot screen via OpenCore.
Possible, SATA ports rated ~55W. So, you can power a 8pin by 3x SATA ports.Thanks for the quick reply. I use Windows quite frequently so the idea of having boot screens is more important than the second GPU in my current setup.
But is it possible to undervolt one card and leave the other stock? That way I could power it from the SATA connections + PCIE port itself.
Or do you think that the second card could be powered sufficiently by the SATA ports without undervolting?
Possible, SATA ports rated ~55W. So, you can power a 8pin by 3x SATA ports.
For a duo RX580 set-up, many members here would just advise you the Pixla Mod. The beauty of Pixla mod is you draw power directly from the main source, the least impact to performance of other parts.
Downgrade the driver to V378.
V387 drivers aren't good for multi GPU.
Nvidia driver problems beyond 10.3.0
Hi Everyone, I've got 3x 5,1 MacPro's which are used for all types of graphics apps. (All dual 3.46ghz 12 core machines with 32GB ram, sata SSD startup drives and 2tb spinners for storage) One of the machines is setup specifically for Cinema 4D renders using Redshift. This machine using the...forums.macrumors.com
There is not much you can do, the web driver quality for Pascal card is that bad.Thanks h9826790
its working, but there are still some problems, crash and logoff suddenly, black stripe on finder!
The Radeon RX 5700 XT was tested it last autumn: https://barefeats.com/cmp-5700-xt-vs-other-gpus.html
hint: This is an opened door for the Mac OS Big Sur.
REPORT: Sapphire Pulse Radeon RX 5700 XT 8GB GDDR6
This card is PC AND MAC compatible by default, no need to flash it.
I bought mine here: https://eshop.macsales.com/item/Sapphire/112930120G/
REQUIRE: Catalina 10.15.1 installed on your Mac Pro 5.1 only, with OpenCore or Clover.
*(use OpenCore by default, PART I, no need to follow Part II Advanced Configuration - at your own risks)OpenCore on the Mac Pro
This guide explains how to use the excellent OpenCore boot loader to install, run, and update the latest version of macOS on the MacPro5,1, resulting in a clean, unaltered operating system just like on a supported Mac.forums.macrumors.com
Performance: equivalent to the VEGA 64, BUT... no need to flash, and has boot screen
Power Consumption: dual 6 pins to 8 pins, plus dual sata 15pins to 6 pins. *see below for config
Outs: 1 x HDMI, 3 x DisplayPort 1.4
Compatibility: DirectX 12.0, OpenGL 4.6, Metal Supported, feature set macOS GPUFamily2 v1, macOS 10.15.1 Catalina or later required
Other: occupies 2 slots, with Boot Screen
ALERT: Don't go with the MacVidCards version "right now"... they are flashing it - don't know why, though... and their flashed version is not compatible with the latest OS, they announced it on their official site, to keep OSX 10.15.4 ... http://www.macvidcards.com/blog/dont-update-to-10155-with-efi-5700
I have the OWC version of Sapphire Pulse Radeon RX 5700 XT 8GB GDDR6, and even if it's a PCIe 4.0 card, it fits perfectly within the Mac Pro, power and data wise.
IF you have no need for the #3 and #4 Dock slots, use my trick instead of tweaking your Mac Pro with the PIXLAS mod...
Power consumption: 6 + 8 Pins: dual mini 6 pins to 8 pins, PLUS dual SATA to 6 pins. NO PIXLAS mod. This situation is for the MacPro 5.1, because the 7.1 has a different power manager.
- 18AWG Dual Mini 6 Pin to 8 Pin Male PCI-E Power Cord, 8$US at newegg.com
- Dual SATA 15Pin Male M to PCI-e 6 Pin Female F, 9$US at newegg.com, plug them in #3 and #4
- StarTech.com PCIEPOWEXT 8 in. 6 pin PCI Express Power Extension, 10$US at newegg.com to extend the Dual SATA, because it's not long enough..
Oh, btw, I bought that card because my RX 570*(no flash, no boot) was **** with the game RUST... now I see everything in 8k, imagine the beauty!
My System Report *(with 2 monitors, and NightShift works by default when set with kext in OpenCore):
Hardware Overview:
Model Name: Mac Pro
Model Identifier: MacPro5,1
Processor Name: 6-Core Intel Xeon
Processor Speed: 3.46 GHz
Number of Processors: 2
Total Number of Cores: 12
L2 Cache (per Core): 256 KB
L3 Cache (per Processor): 12 MB
Hyper-Threading Technology: Enabled
Memory: 48 GB
Boot ROM Version: 144.0.0.0.0
SMC Version (system): 1.39f11
SMC Version (processor tray): 1.39f11
Serial Number (system): C07L30L3F4MH
Radeon RX 5700 XT:
Chipset Model: Radeon RX 5700 XT
Type: GPU
Bus: PCIe
Slot: Slot-1
PCIe Lane Width: x16
VRAM (Total): 8 GB
Vendor: AMD (0x1002)
Device ID: 0x731f
Revision ID: 0x00c1
ROM Revision: 113-1E4112U-O45
Metal: Supported, feature set macOS GPUFamily2 v1
Displays:
24MP56:
Resolution: 1920 x 1080 (1080p FHD - Full High Definition)
UI Looks like: 1920 x 1080 @ 60 Hz
Framebuffer Depth: 30-Bit Color (ARGB2101010)
Display Serial Number:
Main Display: Yes
Mirror: Off
Online: Yes
Rotation: Supported
Automatically Adjust Brightness: No
24MP56:
Resolution: 1920 x 1080 (1080p FHD - Full High Definition)
UI Looks like: 1920 x 1080 @ 60 Hz
Framebuffer Depth: 30-Bit Color (ARGB2101010)
Display Serial Number:
Mirror: Off
Online: Yes
Rotation: Supported
Automatically Adjust Brightness: No
UEFI Windows or legacy Windows?Gigabyte R9 280X Flashed works with boot screen. Windows 10 drivers (win&amd) do NOT work with flashed R9 280X. You will get a hard reboot or black screen once driver is loaded. You will have to go into safe mode and force driver to the default Microsoft Basic Display Adapter.
UEFI Windows or legacy Windows?
That’s the problem. If you install Windows in legacy mode, it can work with the Mac EFI UGA without any issue.Mac Pro 5 1, when holding option it says efi boot
Could you clarify a couple things for me, if possible? Our systems are spec'd very similarly. I'm currently running High Sierra with an RX580, and I am excited by the possibility of more upgrade options (as well as having a native boot screen again).
- The Bare Feats post you linked mentioned using dosdude1's Catalina patcher with good results. Is there any advantage to using OpenCore instead? Is OpenCore needed to get the boot screen?
- The Bare Feats post also mentions that the RX 5700 XT can be powered "using only factory PCIe bay power feeds" just like the RX580. If that is so, why are you using extra SATA-to-PCIe power cables?
- Is the "OWC version" of the RX 5700 XT special in any way? The same GPU with the same specs and product number is currently listed on Amazon for $100 less:
SAPPHIRE 11293-01-20G Radeon Pulse RX 5700 Xt 8GB GDDR6 HDMI/ TRIPLE DP OC w/ Backplate (UEFI) PCIe 4.0 Graphics Card
The Pulse Radeon RX 5700 Series is all about providing PC users with an immersive gaming experience and great value for money starting with the sapphire Pulse Radeon RX 5700 XT this factory-overclocked model is dedicated to customers who want a future proof card that delivers incredible visual fi...www.amazon.com
Thanks!