Quote from: mezza550 on February 23, 2014, 03:57:54 PM

Good luck and don't forget to report back here.

Thanks for the upload mezza550, I've followed the exact same procedure as you've stated here and can report very similar results for my 3x 11221-00-20G's -they hover around 700-707kh/s. My setup is pretty much the Cryptobadger rig: http://www.cryptobadger.com/2013/04/build-a-litecoin-mining-rig-hardware/

Now I'm wondering if I can get a few more khash out of them, It would be nice to end up somewhere around 740. What I'm going to try in order of importance:

1. Fine tuning the overclock.
Right now they are all on --gpu-engine 1065 --gpu-memclock 1500, probably can adjust the sweet spot further for individual cards.
Q: No performance gain by overclocking memory on 280X?

2. Going from cgminer to sgminer and try out a few other kernels.

3. Look at other Catalyst/SDK version combinations.
Right now I'm at Catalyst 13.11 beta 9/APP ADK 2.7.

4. BAMT
I tried ubuntu, went half insane trying to do the simples things in a broken UI, went back to windows. A pre-configured mining-specific Linux enviroment like BAMT should be better optimized and thus give slightly higher hashrate. Problem with support for Wi-Fi cards though.

5. Pray
The patron saint of miners is Saint Barbara, she might bless me with a few extra khashes Wink

http://en.wikipedia.org/wiki/Saint_Barbara