Darkcoin uses it's very own hashing algorithm. Your cards run cooler and you get more hashes per second. Can't beat that! The gpu miner is down below. You can clone it in terminal using the command below. git clone git://github.com/prettyhatemachine/sph-sgminer After you install it, cd-ing to directory: (sudo chmod +x ./autogen.sh, sudo ./autogen.sh, ./configure, sudo make, sudo make install) You will need to Download the AMD ADL SDK files (less then 5mb.) http://developer.amd.com/tools-and-sdks/graphics-development/display-library-adl-sdk/ transfer the AMD ADL SDK files over to the directory in the sph-sgminer. Directory name ADL_SDK You are now ready to mine.