MP 1,1-5,1 MacPro 3,1 with NVMe and Ventura on PCIe v.2 speed

[StormLord]

Hi,
As the title says, I have an MP3,1 with NVMe on the second slot and I've installed Ventura.

Is there a way to enable pcie v.2 speed on the NVMe like I have it on Mojave with pciutils and a couple of scripts?
I searched for pciutils and couldn't find a way to install it on Ventura, any other way maybe ?

 

[Dayo]

You should be able to use FixPCIeLinkRate efi driver from the joevtApps package:

Releases · joevt/joevtApps

My EFI projects. Contribute to joevt/joevtApps development by creating an account on GitHub.

github.com

Only twist from your perpective is that it needs to be loaded before the OS is started. This means using a boot manager such as RefindPlus or OpenCore to load it or setting Driver#### params up (UEFI Scripting) to do the same.

@joevt can tell you more.

 

[joevt]

This has some methods:
https://forums.macrumors.com/threads/mac-pro-3-1-nvme-support-upgrade-guide-questions.2194878/
Scroll down to "Enable PCI 2.0 on slot 2". Option C is the one I like.
The Driver#### method is described for Option C of the "Bootable NVMe" section.
Currently I'm only loading apfs.efi using Driver#### though.

 

[StormLord]

Sorry guys, I rushed to write before testing!
I just tested the speed with Blackmagic disk speed test and the NVMe is already on pcie v.2 speeds I'm getting way above 750MB/s almost 1400MB/s so it must be enabled by OCLP 0.6.4 that I'm using.
Maybe its not needed anymore!

Edit: mind you I just boot Ventura from a SATA SSD for now, because I have Mojave installed on the NVMe, to check if I'm pleased with the results and then I will carbon copy it to the NVMe.
I don't believe it will be different for PCIe v2 speeds if I'm booting from SATA or NVMe, would be?

 

[Dayo]

The OCLP most likely includes Joe's driver.