Hello, I am new here and need some help with mining.

Hi all. I have an Asus HD6970 DirectCUII and I am only mining at 220 Kh/s. According to many forums it must be able to do around 450 Kh/s. I have been working on my mining settings for six weeks now and have been reading many topics on this. I hope anyone can help me to get between 400 and 500Kh/s. 50FTC reward :)

My system is:
Windows 7
AMD Athlon II X4 640 3.00 GHz
4GB RAM
64-bit
ASUS HD6970 DirectCUII

I run:
CGminer 3.6.6
AMD-APP-SDK-v2.8.1.0

I use:
setx GPU_MAX_ALLOC_PERCENT 100
setx GPU_USE_SYNC_OBJECTS 1
cgminer.exe -o stratum+tcp://pool.d2.cc:3333 --scrypt -u username -p x --thread-concurrency 14208 -I 12 -g 1 -w 256 -v 1

It doesn’t make a difference if i use a higher Intensity. -I 16 gives the same hashrate but lets the temperature rise to 106 celsius.

These are the thread concurrency settings that work for this card but it doesn’t change my hashrate, it always stays around 220Kh/s:
3552
7104
14208
17760
21312
24864
28416

These are some shaders that work for this card, adding --shaders to the scrypt also doesn’t change anything.
1406
1536

I also installed MSI Afterburner. The normal settings are Core Clock 890Mhz and Memory Clock 1375Mhz. Some people on forums suggested to lower the Memory Clock to as low as 400Mhz. Hashrates still stayed between 200 and 230 Kh/s. Finally I decided to try GUIMiner. It works but still the same hashrates. I hope this post will be useful for any other HD6970 users.

Can anyone help?

sheepson

Just as a test, what hashrate are you getting when you only provide -I and then play with different numbers?

cgminer.exe -o stratum+tcp://pool.d2.cc:3333 --scrypt -u username -p x -I 12
cgminer.exe -o stratum+tcp://pool.d2.cc:3333 --scrypt -u username -p x -I 13
etc

These are the results.

cgminer.exe -o stratum+tcp://pool.d2.cc:3333 --scrypt -u username -p x -I 12 gets: 185Kh/s
cgminer.exe -o stratum+tcp://pool.d2.cc:3333 --scrypt -u username -p x -I 13 gets: 186Kh/s
cgminer.exe -o stratum+tcp://pool.d2.cc:3333 --scrypt -u username -p x -I 14 gets: 215Kh/s
cgminer.exe -o stratum+tcp://pool.d2.cc:3333 --scrypt -u username -p x -I 15 gets: 223Kh/s
cgminer.exe -o stratum+tcp://pool.d2.cc:3333 --scrypt -u username -p x -I 16 gets: 230Kh/s

sheepson

Have you tried using an older version of cgminer?
For instance, i use version cgminer 2.11.4

Ok, used cgminer 2.11.4

cgminer.exe -o stratum+tcp://pool.d2.cc:3333 --scrypt -u username -p x -I 12 gets: 175Kh/s
cgminer.exe -o stratum+tcp://pool.d2.cc:3333 --scrypt -u username -p x -I 13 gets: 182Kh/s
cgminer.exe -o stratum+tcp://pool.d2.cc:3333 --scrypt -u username -p x -I 14 gets: 214Kh/s
cgminer.exe -o stratum+tcp://pool.d2.cc:3333 --scrypt -u username -p x -I 15 gets: 218Kh/s
cgminer.exe -o stratum+tcp://pool.d2.cc:3333 --scrypt -u username -p x -I 16 gets: 230Kh/s

Sometimes I got some peeks to 270Kh/s but that lasted just a vew seconds. Also I noticed the temperature to be high (from -I 14 and up it reached 105-106 celsius.

angloblaxon

Have you tried MSI Afterburner? you can play with your clock / memory / voltages from there and see if it does anything for your hashrate.

sheepson

That’s really high temperature!

Maybe there is a lot of dust in your card? Might want to check that out.

Thanks for the help.

I do have MSI Afterburner. I tried some different clock / memory / voltages settings but it gave me lower hashrates or it crashed. I know the temperature is high. There is no dust in the card. A temperature of 106 makes the card crash. Anything below that seems to work fine.

Could there be anything else that causes my low hashrate?