Hi guys, thanks for your work. It took a while to read all the posts, but I learnt a lot. I have just broke the 4MH - X11 barrier for R9 290 (ASUS R9 290-DC2OC).

Here are the settings for those interested:

[snip]

I have 2 cards, both running at 1050/1500MHz set with Afterburner (power limit +50). I had to take out the engine and memory settings from the config file as the memory frequency was jumping around between 150 and max setting. Very stressful on the system. Now everything is smooth. I kept only the temp control as I like the strategy.

GPU threads have been increased as to flood the memory as much as possible with mining work (5 seems to be the max limit for my system). That was a tip on the forum as well, thanks the author. Cards memory is now loaded on >80% and my RAM as well.

The miner is Elun's b2 version from the OP, drivers 14.3beta, Win 8.1.

Out of my 2 cards one is water cooled and I guess it can go higher. I'll upgrade the wc sytem in a couple of weeks (have to raise more coins and then go for 5MH/card. I hope I can get there.

When I started reading this post, 2 weeks ago, I had 2.5MH/card, then raised it to 3.6 by following you advises and now 4-4.1. First jump had no impact on energy consumption. Now, I estimate a less than 5% increase, which, for me, is acceptable.

Thanks again guys for your work.