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Title: Radeon 7990 hardware errors Post by: dzzima on February 08, 2014, 08:15:31 PM I have 2x7990 in a rig. One core throws approximately one hw error per hour. Is it a problem and what can be a reason? Here is my cgminer screenshot http://prntscr.com/2qpk0l
Title: Re: Radeon 7990 hardware errors Post by: EasyQuest on February 08, 2014, 08:30:27 PM What is your intensity and thread concurrency?
Title: Re: Radeon 7990 hardware errors Post by: dzzima on February 08, 2014, 08:36:12 PM I use the following arguments: -I 13 -g 2 -w 256 --thread-concurrency 8192 --gpu-powertune 10.
Title: Re: Radeon 7990 hardware errors Post by: EasyQuest on February 08, 2014, 08:49:20 PM Have you tried a different powertune? like 20
I never get HW errors with 7970 because I never set my powertune... in any case tried 20 or leave the powertune alone, meaning delete the --gpu-powertune all together. 7990 is basically 2x 7970 so tried out powertune 20 or leave powertune out of the argument. Title: Re: Radeon 7990 hardware errors Post by: mdmx on February 26, 2014, 04:26:00 AM I'm having the exact same issue on one core, it's throwing HW errors... the other 3 cards are fine.
Config; setx GPU_MAX_ALLOC_PERCENT 100 color 02 cgminer.exe --scrypt -o stratum+tcp://fr.dgc.theblocksfactory.com:3338 -u abc -p x -I 13 -w 256 --thread-concurrency 8192 -g 2 --gpu-fan 100 I've set the voltage on the cards to 1150, even at stock, it throws HW error. Title: Re: Radeon 7990 hardware errors Post by: Eastwind on February 26, 2014, 11:31:57 AM Just reduce the core frequency for a few MHz. You can also reduce the core voltage to around 1.05V.
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