Hi all, I'm new to the forum but I've been mining sporadically for some time now.
I always mined with a regular pc, just for the fun of it, but I finally decided to build a proper rig to mine litecoins.
I bought this (from a gamer who was selling his hardware, so it was cheap):
MB: Asus Maximux V Extreme
VGA: 4x sapphire hd7970 ghz edition
1500W power supply
16Gb Ram, core i7 3.4Ghz cpu
I started mining with cgminer using initially some default setup and then going to experiment a bit. A 7970 sould be supposed to mine litecoins around 700Kh/s, however my trials with a single card setup never went above 460Kh/s.
If I try to add more cards the system slows down considerably (each card dropping as low as ~300Kh/s).
My best result was with this setup (referring to a single card setup):
DISPLAY=:0 ./cgminer --scrypt -o
http://de1.suprnova.cc:8336 -u xxx.1 -p xxx --shaders 2048 --thread-concurrency 10240 -I 13 --gpu-engine 1000 --gpu-memclock 1750 --auto-fan -g 2
I tried both on linux and windows, with cgminer and reaper, and I always got similar results.
What can I do to get decent speed? Is there a problem with my setup? Am I missing something?
Thanks for your attention