Results so far are good. 2.01Mhs for a R9280x and only using 50% of the power as scrypt and scrypt-n.
Cards are running between 50-65 degrees.
This reddit post backs up my experience as well.
http://www.reddit.com/r/Hirocoin/comments/215lkd/changing_landscape_for_scrypt/
X11 could be a good move for AIRcoin if they can make it work.
You can get easily 2.15-2.25 (2.3 if you have good card) per 280X with the 4.1.0
I got my setting at Darkcoin thread (obviously) as that's were the X11 originates.
2.15 - I 13, w 256, g 2, 8192 threads, clocks 1050/1500 (lowest reject rate for me)
2.25 - I 13, w 256, g 2, 8192 threads, clocks 1120/1500 (a bit more rejects)
2.3 - I 18, w 256, g 1, lookup-gap 2 8192 threads, clocks 1150/1500 (crashes sometimes, but works on strong cards)
Thanks for those settings.
Managed to get 2.06Mhs for now so an improvement already.
You can play with the core speed, I found quite a linear improvement in just core clock increase, leaving memory the same. Seems with X11 there are no more "sweet spots", relying heavily on very specific ratios, so much easier to set up.
Also try memory 1600 if your cards can handle it (seperately from other changes).
Glad to see this support for the x11. Isawhim had a bad break and seems to think that Powercolor 7970s are susceptible to problems with this. I cannot know since I don't own any, but I can say my 7790s and R9 270s run a lot cooler, use less power, and hit the speeds that they are supposed to with x11 (about 3.5 times the hashing speed). I also have no HW error like I did mining Vertcoin. It is a matter of time before people realize, I think, that X11 is GPU friendlier than Scrypt Adaptive N-factor like Vertcoin has. It is far easier on my electric bill to. Also the shit will really hit the fan when ASICs are manufactured to have expandable memory to accommodate for the adjustments in N-factor, effectively ending Vertcoins claim of ASIC resistence, or flat out ASIC "proof"ness and some Verter's claimed at the beginning of it's hype. (Disclaimer, I still like Vertcoin and it is for that very reason I am being critical of this). Removing X11 from the table is a big mistake in my opinion. People who dislike this idea seem to have exited or are not miners anyway, and are concerned that it will distract from other areas that need focus. I respectfully disagree with this notion because I think the significance of this implementation is largely undervalued at this point. Given the recent crash in prices we may just need something big like this to inject some AIR back into things.