Seems no one done for those.
Just ask ... will always mod for you
Download https://drive.google.com/open?id=0B6R3UoULhg3cbWYwVlYzNmUtSGc
Modded with straps from 1250MHz --> 1375MHz , 1500MHz (1500MHz Should kick ass - ~80+ sols/sec)
p.s.1 - Flash with AtiFlash.exe from command prompt, atiflash -f -p X rom_name.rom , x = card number given by atiflash -i
p.s.2 - This is not some "Dirty hack" with timing tables from some totally other card, but timing table from same card's bios, for that specific memory (BFR).
b.r.
Brka