Hi Claymore,
i get with R9 280x 15.5Mh only not 20Mh
How can i improve it ?
Its normal for 280x.
DEPENDING HOW HOT YOUR ROOM IS--
280X cards run hot and eat power. If your cards are overheating, you may need to downclock, and earn 15-16MH/s per card. If you set "-dcri 15" in your config, you will reduce the intensty of your secondary coin by 1/2 and give your 280X cards more room to breathe; they will run faster and at lower temperature. If you set "-cclock 1100", you will overclock your card, increase the hash rate, and increase the temperature of the card. A core clock of 1100 may not be stable for your card/rig, you have to check postings by other miners regarding overclocking. If you set "-tt 87", your card will self regulate, attempting to keep the temperature at or below 87 deg F. If you are in a hot room, your hash may be 15-16MH/s because of temperature throttling. My 280X cards made 22MH/s last winter, when the room was cooler, and the difficulty lower, and the DAG smaller.
All of this and more is in the README!!!.txt file, you should study it. --scryptr
after research i overclocking core clock to 1100
and memory clock to 1600
i get 18.5Mh but run very hot 75c
can i get better hash rate if i overclock higher ?
and thanks for this info ..
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