Author Topic: 3 x R290's one card only running at 400khs? 1 LITECOIN offered if u can fix it  (Read 3144 times)

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Offline neoemmafrostTopic starter

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Hi  :)

I have 3 x R290s, I currently started off with 2 x 290s, one asus one and one xfx one, I have a gigabyte z87 OC motherboard with 4 pci slot for gpus, I had the asus card in slot one and the xfx card in slot 3. I then added another xfx card and put it in slot 2, I have all the settings the same on guiminer and the other two cards are running at 825khs but this new card is only running at 400khs?

My settings on guiminer are as follows
concurrency: 24550
vectors: 1
gpu threads: 1
use stratum: yes
worksize: 256
intensity: 20

If you can fix this to work I will send you 1 litecoin thanks


Offline xtcsso

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copy paste your bat file

Offline theproj

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Change your concurrency to 32765, work size to 512, and add powertune 20.


What rate do you get when it is run by itself?
Whats the wattage of the psu? (3 290s will need more than 1100 watts unless your under volt it)
What temp are the cards running at?


Let us know

Offline smoogie

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I would suspect the low hash rate is due to heat.


Is the card at 0 or 1 PCI-E slot?


Increase cooling or override the fan speed to higher percentage.  (in cgminer or catalyst panel)


or increase cooling with boxed fan/liquid cooling.


EDIT: when the card is too hard, it may be auto clocked down.

« Last Edit: January 22, 2014, 03:24:51 AM by smoogie, Reason: additional info. »

 

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