Author Topic: Hash rate off Sapphire Vapor x R9 280x low, need help, will give award of LTC  (Read 8472 times)

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Offline legendrouteTopic starter

I am new, just started mining recently. I have a rig running with 3 Sapphire Vapor X R9280x. Those cards are supposed to run at 700KH/s, but I can only get 530KH/s. Can you please kindly help me out?
That's my current settings:
./cgminer --scrypt -I 13 -g 2 -w 256 --lookup-gap 2 --thread-concurrency 8192 --gpu-engine 1080 --gpu-memclock 1500 -o stratum+tcp:// -u user.1 -p x

I tried all kinds of settings, the above one was the best hash rate I can get with acceptable stability. If I push -I higher the cgminer will just hang.

I am running it xubuntu 12.04, and I noticed all users posted their configuration which can reach 700KH/s are all mining on windows 7. Do I have to use windows 7? Is there any body reached 700+ with same card on ubuntu? Thanks!

Offline xLightcoinx

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