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Topic: Radeon 6970 scrypt finetuning (Read 1704 times)

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Activity: 112
Merit: 10
May 03, 2013, 01:16:05 PM
#1
Heya,

I don't know if this is the right place to post, but i having 6970 shapire card and i can mine with it sha256 code very well
i can do about 429Mh/s in bitcoin or other alt coin what use SHA256. i guess that is good cause its almost highest on the list mining comparasion. i was unable update my setting there because the wiki page was not able to edit with regular user Sad

im using this setting to mine on BAMT SHA256

/opt/miners/cgminer-2.11.3/cgminer -o http://[] -u [] -p [] --verbose --log 1 -w 256 -v 2 -g2 --gpu-engine 980 --gpu-memclock 860 --intensity 9 --auto-fan --gpu-fan 40-100 --temp-target 75 -s1 -E1
i was able to downclock that memory 150mhz down, i know its not possible to underclock more on linux, there is issues about this on this forum...

But what comes to SCRYPT
i have problem, changing clock to any drection will drop hasrate, i came totally to wall about this thats becouse im posting here.
i use this setting to mine scrypt:

root@bamt-miner:~# screen /opt/miners/cgminer-2.11.3/cgminer -o stratum+tcp://[] -u [] -p [] --scrypt  --verbose --log 1 --gpu-fan 80 --gpu-threads 2 --intensity 18 -w 256 --shaders 1536 --thread-concurrency 8100 --gpu-engine 880 --gpu-memclock 1375 --auto-fan --gpu-fan 40-100 --temp-target 75  -s 1 --queue 0 -o stratum+tcp://[] -u [] -p []  

with this setting i get about 470khash/s on scrypt mining.
The clocks are factory default, they work best if i change them the hasrate will be decrease alot, so any tips about this? i though if overclock it should increase, but i get only decrease, even if i overclock in same rate mem/cpu. I was reading litecoin mining comparasion table and saw someone got 500khash on that, it might be windows, but that is not an option now.

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