Quote from: nomad1109 on May 11, 2014, 03:56:39 AM

Quote from: mordecai779 on May 10, 2014, 08:24:33 PM

I have two MSI's. One is at 1315 MHZ and the other 1200. Memory is on deffault. I get now 1500-1600 kHash per card. The difference because of clock speeds is minimal; around 40 khash. My config is the same as yours... Not sure why you get only 1280. I'm using separate instances for my cards if that helps.

Update on what I have found...

Running one instance of ccminer50 v1.0 per card for my first two cards works like a charm. First card is running at ~1780khash/s, and the second ~1670khash/s.

Firing up a third instance of ccminer, dropped both cards to ~1400khash/s per card, and if I killed that third instance off they would ramp back up to full power.

I had also discovered that having left jackpot-qt running (for the stake coins) was killing the hashing speed if I left it running on the miner, so I moved that over to my main machine off the mining rig. Not really sure why that was such a problem for the hash rates, but that was the first thing I discovered.

I tested running up to 6 instances of ccminer, and that ended up pegging my CPU at 100% anyhow, so not really conclusive other than I don't have a CPU in the miner good enough for that (1150 socket 2.7GHz Dual-core Pentium Haswell, 8GB RAM).

So for now I am having two cards mine DRK, and have the other 4 sill solo-mining JPC for now... and that seems to not be slowing the DRK mining cards down at all having one other instance open running the other 4 cards.

Anyone running 5-6 cards mining x11 right now? or are most of you running just 2-3 cards?

Thanks for everyone's help and suggestions.

Just out of curiosity, I stopped my other coins mining rigs and dedicated 6 750Ti for X11 -- the new Colorcoin mining for 5 minutes. Without any OC, I do see the average hashrate per card is around 1400Kh/s. I have 2 cards on another machine mining for Colorcoin-- but they can mine around 1550Kh/s easily. May stop that as well. So far just have one block found since I haven't put too much resource on it. I personally feel it is another scam coin and don't want to bet on it. It may not make the way to some decent exchange.