I installed a Asus 280X Plat bios on it and changed thread concurrency to 11200 and gpu clock to 1080 and bam it's hashing happily at 750 Kh/s. Before this I was just unable to get more than 560 Kh/s out of it.
Please tell me how!
I hope you are talking about the refurb powercolor 7970 ()
You will lose the use of the HDMI port with this bios.
http://www.techpowerup.com/vgabios/150462/asus-r9280x-3072-130827-2.html
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