15 WDC reward – Cannot pass the 550kh/s with my 2 Gigabyte R9 280X, GV-R928XOC-3GD

December 27, 2013

Hello. 15 WDC reward for the one who helps me to pass the 650-700 kh/s .

I have 2 Gigabyte R9 280X, GV-R928XOC-3GD and I cannot pass the 550kh/s ~ with both of them.

I have undervolted to 1.050 and it is still the same.

The problem is the same with or without risers.

I tried different settings but it doesn’t change.

Please notice that on the same hardware, I have 2 Radeon Sapphire 7950 who run at 600 kh/s +.

The cards run at 50-55°C ~ and 500-550 kh/s with :

–worksize 256 –thread-concurrency 8192 –vectors 1 -I 13 -g 2 –lookup-gap 2 –gpu-fan 70 –gpu-engine 1035

I did set GPU MAX ALLOC to 100.

Thank you.

submitted by bigcamel
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