How to Determine Exact Model of GPU

[danallen]

I can see the GPU I have is RX550 Sapphire.

How do I find out what sort of Nitro it has if any?

 

[joevt]

Are there any labels on the card?

Or maybe there's clues in the card's ROM.

What are the properties of the PCI device in ioreg? Maybe the sub-system vendor and device ids have a clue.

 

[bogdanw]

I can see the GPU I have is RX550 Sapphire.
How do I find out what sort of Nitro it has if any?

You can't determine from System Information, because that is faked by Open Core Legacy Patcher.
The branding should be visible on the orther side of the card.

According to https://www.sapphiretech.com/en/nitro-matrix, there is no Nitro RX 550.

There is a Nitro RX 5500 https://www.sapphiretech.com/en/consumer/nitro-radeon-rx-5500-xt-se-8g-gddr6