What strap should I use for sapphire nitro oc with samsung memory?

[pornluver]

Currently I mod the main bios (not the silent one) and copy 1750 to everything below.

The memory is 4GB. However, many said that it's actually 8GB.

So I wonder what strap should I use.

I tried to strap 1625 silent bios but that's not working well at all. Too many errors.

And after that, what GPU clock and memory clock you use?

I used 1180/2150