7850 only 20kh/s

[werdwerdus]

Mining for DOGE

7850 at 860mhz core 1200mhz ram, 1GB
intel core i3-530 2.9GHz, 4GB DDR3-1333mhz
windows 7 64 bit, CCC 12.8, APP SDK 2.9

cgminer.exe --scrypt -u user.worker -p password -o stratum+tcp://domain:port --gpu-platform 0 -d 0 -w 256 -v 1 -I 13 -g 2 -l 1 -T  --thread-concurrency 8192

only averaging around 20kh/s according to cgminer 3.1.0

is there a problem using cgminer 3.1.0?  would using most recent version get me to a normal speed?  afterburner is showing 95%+ gpu usage.  any idea why only 20kh/s?  i see reports of others getting several hundreds kh/s on 7850.  i got the same speed on CCC 13.1 (I think it was 13.1).

thanks

[atp1916]

Try these parameters:

Code:

--gpu-platform 0 -d 0 --no-submit-stale --thread-concurrency 10048 --intensity 17 --worksize 256 -g 1

If those parameters do not work and you have the same 20khs, you need to wipe your driver platform clean using the CPanel add/remove program Catalyst uninstaller program.

I highly recommend the Cat. 13.4 / 2.9 SDK combination.  12.6/12.8 + 2.9 should be fine as well. 

[sighle]

He might be mining on a card that's in standby mode, too.

Except I don't think any of the HD 7XXX cards ever needed jumpers.

Could be if there's no monitor plugged into the GPU then he just needs to turn off his power control through Windows which will put it on standby if it doesn't detect a monitor.

[werdwerdus]

well I completely removed the drivers and installed 13.4, app sdk 2.9, and tried cgminer 3.6.0, I'm getting around 300kh/s now.  I wouldn't expect much more with the old core i3 cpu 

thank you

[atp1916]

well I completely removed the drivers and installed 13.4, app sdk 2.9, and tried cgminer 3.6.0, I'm getting around 300kh/s now.  I wouldn't expect much more with the old core i3 cpu  

thank you

Most excellent.

I must add that the 7850s i dealt with in the past loved core clocks in the 1000-1200 range with the ram pegged @ 1250.  I could get 350-400khs with regularity, you may be able to get the same.  I highly doubt your CPU is limiting you.