Author

Topic: Squeezing more hashes per sec from HD 6770 (Read 1381 times)

sr. member
Activity: 686
Merit: 259
November 30, 2013, 08:57:48 AM
#1
Hey guys.
I have a ASUS HD 6770, which is pretty old but I still can't get anything better to mine.
I'm mining a scrypt altcoin, and I'd like to know what I could change to get a better hashrate.

I use BFGMiner with the following .bat:
setx GPU_MAX_ALLOC_PERCENT 100
bfgminer.exe --scrypt -S opencl:auto -o http://127.0.0.1:9332 -u username -p password -w 128 -I 14 -g 1 --no-longpoll --thread-concurrency 8192 --shaders 1792

I leave intensity to 14 when I'm using the computer, I switch to 17 when I'm not using it.
I get 161 kH/s with stock clocks (850 MHz, 1000 MHz).
Tried overclocking the memory to 1200 but the hashrate actually decreases.
Increased clock to 970 but crashed after 20 mins.

Anyone got some tips?

Thanks.
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