Topic: Can't get over 650 Khash with a 280x sapphire Vapor-X 11221-02-40G (Read 694 times)

vpasic

sr. member

Activity: 266

Merit: 250

Set gpu clock speed to 1040!

filipe3x

hero member

Activity: 1008

Merit: 500

Anyone with the same problem here?

I got the 8+8pin power version. I heard people saying these are crap for mining.

I am using these configs right now:

Code:

-I 13 -g 2 -w 256 --lookup-gap 2 --thread-concurrency 8192 --gpu-engine 1000 --gpu-memclock 1500 --temp-target 70 --auto-fan

(from http://www.cryptobadger.com/2013/12/radeon-r9-280x-gpu-mining-results/)

thanks!

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