rx5700xt - npci or above4g?

[madvinegar]

Hello there! Hope everyone is well and safe.

I just replaced my GPU with an rx5700xt. (I previously had an rx590)

Apart from various problems I had during installation (I had to use a boot argument to stop the dedicated gpu in order to boot, otherwise I would get kernel panic during the 2nd boot of the installer), but in the end managed to install Catalina and everything is working fine.

I have inserted the boot argument npci=0x3000 instead of enabling in bios the "above4g". Is that ok? What is best preferred?

Please let me have your comments.
Thank you!

 

[wild_eep]

I dual boot into Windows 10 on occassion. But if I had "above4g" enabled in the BIOS, then Windows 10 wouldn't boot. So I need npci=0x2000 in boot args in order to boot into MacOS.