7850 Config @ 385~ khash for Scrypt Mining

[oxxon]

Hi guys, I will give my settings for my two 7850 Sapphire Dual-X OC  

Here  my bat:

Code:

setx GPU_MAX_ALLOC_PERCENT 100
setx GPU_USE_SYNC_OBJECTS 1
cgminer --scrypt -o XXXXXXXXX -u xxx.1 -p xxx --shaders 1024 --intensity 20 --worksize 256 --gpu-engine 1100 --gpu-memclock 1450 --thread-concurrency 16384 --temp-target 60 --temp-cutoff 68 --temp-overheat 70

Temps between 58-62, runing for 2 weeks without crashing.

 

[snowcrashed]

I have one of those cards and can only get to about ~340/kh without affecting stability.  If I set thread concurrency over 10k it crashes (and I've set MAX_ALLOC_PERCENT).

You have your temp-cutoff and -overheat reversed.  -Cutoff is the temperature which CGMiner will automatically disable the card, -Overheat is the temperature at which CGMiner will automatically change GPU/Fan speeds.  You want to hit -overheat before -cutoff.  Also those values you are setting are very low, the default for those values are 85 for Overheat and 95 for Cutoff.  I suppose those values you are setting are fine for a 2 card machine but I'd think about raising them.

[oxxon]

After this, i was using this config, to get 375-380 khash using 8192 of thread concurrency:

 --thread-concurrency 8192 -I 20 -w 256 --gpu-engine 1100 --gpu-memclock 1250 -g 1

Try it, and thanks for the tips of the temp commands !

[snowcrashed]

I'm using higher OC settings than you and still can only pull ~350 Kh

therad-concurrency 8192 -I 20 -w 256 --gpu-engine 1100 --gpu-memclock 1350

[Aryetsok]

I can only go for 260
Need a better gpu...

[oxxon]

I'm using higher OC settings than you and still can only pull ~350 Kh

therad-concurrency 8192 -I 20 -w 256 --gpu-engine 1100 --gpu-memclock 1350

Are an OC version? its strange, if you check this photo, my friends get more khash than me with this settings: https://i.imgur.com/CufDKdo.png

[coingun]

If you specify tc you don't need to include shaders. tc sets your shaders properly.