Your card has Samsung memory chips. Your link is to a BIOS with Hynix memory chips.

There's a lot of guides on how to edit your BIOS without downloading someone else's from the internet, and some of them are on this forum, including this one:
https://bitcointalk.org/index.php?topic=1954245.0Just spend 15 minutes and do it right.
sorry look well, the link give a moded bios for samsung memory as it's writen in the file