Hi everyone, I'm trying to mine litecoins with 2 of these cards. Problem is I get extremely low hashrate. I keep seeing threads with people deceived about their 7970 only doing 600 Kh/s. Well hear me out I only get 280 Kh/s per card...
What did I try?
-Flashed the BIOS to a "certified" 700 Kh/s+ BIOS (
https://forum.litecoin.net/index.php/topic,2963.0.html)
-Have used many different cgminer configs
Here's my current one:
#!/bin/sh
export DISPLAY=:0
export GPU_USE_SYNC_OBJECTS=1
export GPU_MAX_ALLOC_PERCENT=100
./cgminer --scrypt -o http://coinotron.com:3337 -u *** -p *** -w 256 -g 2 -I 13 --lookup-gap 2 --thread-concurrency 8192 --shaders 2048 --gpu-fan 100 --gpu-engine 1080 --gpu-memclock 1500
Using this instead doesn't work either:
#!/bin/sh
export DISPLAY=:0
export GPU_USE_SYNC_OBJECTS=1
export GPU_MAX_ALLOC_PERCENT=100
./cgminer --scrypt -o http://coinotron.com:3337 -u *** -p *** -w 256 -g 2 -I 13 --lookup-gap 2 --thread-concurrency 8192 --shaders 2048 --gpu-fan 100
I'm running out of ideas and can't seem to find much about the problem. It's probably something in my set up but what?
Hardware:
-Rosewill Lightning 1300W
-Gigabyte F2A85X-UP4
-Some processor
-Corsair Vengeance Blue 8Gb
-Patriot Rage XT 16Gb as hard drive
-2x Sapphire Radeon 7970 Vapor-X Ghz Edition
I'm running Lubuntu. I have a similar rig with the only thing changed being instead of 2x7970 it has 3x5970 that hash at about 350Kh/s per core so each card is 700Kh/s
Any suggestion/advice/solution to this problem will be taken into consideration
