GPU on PCIE x4 slot?

[ikantuna]

Is it possible to put GPU in the PCIE x4 slot?
Does the EFI support it?


MOtherboard: MSI PRO B760M-A WIFI DDR4

 

[Cosmix]

Hello,
What's the point to put the RX 6600 in x4 slot ?
If you physically put the RX 6600 in x4 slot, you may cover some connectors on the motherboard.
Also, you may need a larger case.
If it works, then the overall performance may degrade.

What about the x16 slot (generally, this is dedicated to video cards) ?

Anyway, set your BIOS, put the card in x4, see if there are any problems.
If all is fine, then fire up a Windows installation and do tests ...

Cheers

 

[joevt]

What's the point to put the RX 6600 in x4 slot ?

Maybe to provide more PCIe lanes for storage - if the PC is to be used for storage intensive tasks instead of GPU intensive tasks?

 

[ikantuna]

Hello,
What's the point to put the RX 6600 in x4 slot ?
If you physically put the RX 6600 in x4 slot, you may cover some connectors on the motherboard.
Also, you may need a larger case.
If it works, then the overall performance may degrade.

What about the x16 slot (generally, this is dedicated to video cards) ?

Anyway, set your BIOS, put the card in x4, see if there are any problems.
If all is fine, then fire up a Windows installation and do tests ...

Cheers

View attachment 580218

Maybe to provide more PCIe lanes for storage - if the PC is to be used for storage intensive tasks instead of GPU intensive tasks?

I plan to have another card on x16 slot (nvidia).
The RX6600 is for hackintosh. yes some connectors will be covered, like fan header.

I have tested on windows and it's okay so far (been a week or more).

But, is it allowed for hackintosh to use PCIE x4 slot? Is there any necessary setting/EFI modification for this?

 

[joevt]

The slot shouldn't matter. There might be an issue with having an Nvidia and AMD card at the same time but I don't know for sure. You may need to disable the Nvidia while running macOS, maybe using an SSDT patch or something.

 

[Cosmix]

I plan to have another card on x16 slot (nvidia).

So, for gaming, RX 6600 is not enough ....

The RX6600 is for hackintosh. yes some connectors will be covered, like fan header.

I also use a RX 6600. Not to forget agdpmod=pikera on boot-args line in config.plist

I have tested on windows and it's okay so far (been a week or more).

If RX6600 is ok, then nVidia card should be even better.

But, is it allowed for hackintosh to use PCIE x4 slot? Is there any necessary setting/EFI modification for this?

Well .... you must test !
So , for now you have only RX6600 in x4 slot (keep studying what nvidia card fits).
Think about keeping/updating BIOS (check with other users having this board).
Using Windows OS, prepare some important files :
- use SSDTTime to dump your DSDT.aml and get some other .aml files
- use USBToolBox and setup your USB map
Also check the chipset for WiFi/BT ( if they exist, may be you do not need any)

Then try to install a variant of macOS (Sonoma, Ventura; by the end of the year, Monterey could be EOL)
Test, test, test.

When everyting is fine, remove macOS related stuff ( Video, storage) and install Windows.
Test, test, test.

Put back macOS related stuff (video, storage).

Visit this page :

Disabling desktops unsupported GPUs(SSDT-GPU-DISABLE) | Getting Started With ACPI

The above is just a blue print. Do your research and order your actions accordingly.

Have fun