Quote from: NRD on June 01, 2014, 12:44:10 AM

Quote from: Starscream on June 01, 2014, 12:06:29 AM

Quote from: NRD on May 31, 2014, 11:59:34 PM

Quote from: Starscream on May 31, 2014, 09:52:23 PM

Quote from: restless on May 31, 2014, 08:39:39 PM

Quote from: svdinu on May 31, 2014, 05:29:27 PM

I have 2 cards, both running at 1050/1500MHz set with Afterburner (power limit +50). I had to take out the engine and memory settings from the config file as the memory frequency was jumping around between 150 and max setting. Very stressful on the system. Now everything is smooth. I kept only the temp control as I like the strategy.

My 290 also is jumping memory down to 150 and back, do you have any explanation what might be the reason for this behavior?!

Yes, powertune - when it's not configured properly mem-clock will throttle up and down (150-your mem speed).

I also had this issue and after looking for a solution for over a week I managed to fix it by enabling 'Unofficial overclocking mode without PowerPlay support'. I assume of-course that you are using MSI afterburner.
Uninstalling MSI AB might also fix it, or alternatively installing it if you haven't got it.

I made a topic about it a few days ago but no1 responded there; I had an image uploaded there, does it look similar to that? https://bitcointalk.org/index.php?topic=628425.msg6989373#msg6989373

Anyway, now I got a straight line representing my mem clock speed.

Wow thanks for that, it's gotten me up to the 4.05-4.1mh/s level with my 290 tri-x's using my previous config but with 5 threads now instead of 1.

I tried other drivers but 12.13 seems to work best for me on Windows 7. Using the B2_sick version.

You welcome. This issue bothered me for almost a month now

I can't get my R9 290 to run stable with 5 threads.. Than again 2 threads on 14.4 drivers are getting me 3.98MH/s so it isn't so bad I suppose for ref cards.

I'm running with 1 thread atm and getting the same speed, but rock solid stable speed of 4.029-4.031mh/s so you could try that. Here's what I'm running atm.

Code:

setx GPU_MAX_ALLOC_PERCENT 100
setx GPU_USE_SYNC_OBJECTS 1
export GPU_FORCE_64BIT_PTR=1
##export GPU_MAX_HEAP_SIZE=50
del *.bin
timeout /t 4
sgminer.exe -k x11mod --rawintensity 1306624,1306624,1306624,33280 -g 1,1,1,2 --shaders 2560,2560,2560,1280 -w 256,256,256,64 --thread-concurrency 24577,24577,24577,10241 --no-submit-stale -c sgminer.conf

People on forums are claiming gpu threads help keep the reject rate low. Currently I'm below or max at pool level, which gives me an edge.