How to spot RX470 memory type?

[DrX]

How do i know what memory type i have in my gpu? without gpu-z from packet or from SN?

I Have Gigabyte Radeon RX 470 G1 Gaming 4G gpu.

I know there is lists about Sapphire RX470 but didn't find anything about Gigabyte.

and i Know that

With GPU-Z it's easier

F6, F7, F61 bios is Hynix

F21 is Samsung

F11 is Elpida

-> Info from Gigabyte site