rx 480 4gb time straps

Sorry to bother you guys, and thanks beforehand

I have done some bios modding on rx 470 land.

but i got some rx 480s 4gb on sale.

some are msi rx 480 4gb reference,

others are gigabyte rx 480 4gb G1


i am going to flash the bios with only the time strap modded.

now with hynix memory, how should it be? because ive read that on rx 480 is not the 1500 straps, but 1750 ones.


TL:DR

rx 480 4gb hynix should be 1750 straps? or 1625 or 1500?

and on rx 480 4gb Samsung?

thanks