Thanks for this. I've been playing with the power settings with a Sapphire RX Vega 64 Liquid Cooled and got 1990.7 H/s stable @ 0.875 VDDC. Couldn't get power draw at the wall because I need a kill-a-watt thing.

https://i.imgur.com/DvDAIpS.png

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video not open 

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Power tuning is private yet, sorry.

qubit and quark kernels not compatible with stock sgminer.

i tried but it didn't work for me...

Here is a small neoscrypt kernel improvement for free, since I am mostly doing X11 anyway.
It gave me a 5.8% speedup on my reference R9 290 card (with Stilt bios),
from 290.2 to 307Kh/s  at 800/1500 core/mem freq on Ubuntu 12.04 with stock drivers.
I didnt try it on my R9 280x cards, so please post your results if you try this.

You will have to mod the kernel as per the code below.
The bottleneck in this kernel is the way it stores the 128 intermediate results of chacha and salsa in global memory.
By doing the change below you are reducing stalls/latency by not making read/writes to same/adjacent memory banks.

Change:
void ScratchpadStore(__global void *V, void *X, uchar idx)
{
   ((__global ulong16 *)V)[idx << 1] = ((ulong16 *)X)[0];
   ((__global ulong16 *)V)[(idx << 1) + 1] = ((ulong16 *)X)[1];
}

void ScratchpadMix(void *X, const __global void *V, uchar idx)
{
   ((ulong16 *)X)[0] ^= ((__global ulong16 *)V)[idx << 1];
   ((ulong16 *)X)[1] ^= ((__global ulong16 *)V)[(idx << 1) + 1];
}

To:
void ScratchpadStore(__global void *V, void *X, uchar idx)
{
   ((__global ulong16 *)V)[idx] = ((ulong16 *)X)[0];
   ((__global ulong16 *)V)[idx + 128] = ((ulong16 *)X)[1];
}
void ScratchpadMix(void *X, const __global void *V, uchar idx)
{
   ((ulong16 *)X)[0] ^= ((__global ulong16 *)V)[idx];
   ((ulong16 *)X)[1] ^= ((__global ulong16 *)V)[idx + 128];
}

wait a minute it no good getting at Wolf0 about this couse this guy got loads of hash BUT look at those temps and fan speeds,,,
that has got to be water cooled or not 14.6 drivers or inside an igloo

Not really, dude - open air rig in cold weather with good coolers will produce that.

Can you build a Windows 64-bit version like you normally do?

I am pulling my BF from Slush's.
From BitFury page I am hitting 36-39GH/s (running 24/7 obviously)
Lately there have been to many instances where BF is reporting 36Gh lets say ans Slush's is saying my reward is not what is should be.
My only temporary fix for this was to restart my miner every few hours or when I catch the rewards levels drifting off to where I know it's a problem somewhere.
(I am going to test a few days with Bitminter to see if any difference. The last 30min it's been 37 to 40Gh.)

Let the test begin.


#   Block found at   Duration   Total shares   Your shares   Your BTC reward   Block #   Block value   Validity
20058   2013-09-15 17:29:19   0:13:43   12548741   6854   0.01344081   258178   25.19760381    73 confirmations left
20057   2013-09-15 17:15:36   0:30:45   27923822   15687   0.01340737   258176   25.03930960    71 confirmations left
20056   2013-09-15 16:44:51   1:41:51   92542754   53523   0.01400364   258172   25.17849582    67 confirmations left
20055   2013-09-15 15:03:00   0:28:30   25660964   8143   0.00795845   258164   25.10434846    59 confirmations left
20054   2013-09-15 14:34:30   3:54:12   212791583   113196   0.00777608   258159   25.08676663    54 confirmations left
20053   2013-09-15 10:40:18   2:36:46   141656128   82434   0.01397730   258135   25.18045046    30 confirmations left
20052   2013-09-15 08:03:32   1:00:39   54904212   33131   0.01343850   258117   25.02893680    12 confirmations left
20051   2013-09-15 07:02:53   4:03:00   218937938   126283   0.01426751   258108   25.32093276    3 confirmations left
20050   2013-09-15 02:59:53   5:12:41   284428611   135114   0.01408910   258072   25.12901062    confirmed
20049   2013-09-14 21:47:12   2:13:35   122161653   56129   0.00753105   258034   25.14307541    confirmed
20048   2013-09-14 19:33:37   0:50:57   46401717   27014   0.01465370   258015   25.01535462    confirmed
20047   2013-09-14 18:42:40   0:13:34   12502023   6850   0.01222630   258003   25.07640000    confirmed
20046   2013-09-14 18:29:06   0:02:01   1829874   929   0.01257313   258001   25.03120000    confirmed
20045   2013-09-14 18:27:05   1:37:26   88768628   41450   0.01300920   258000   25.09370015    confirmed
20044   2013-09-14 16:49:39   0:31:22   28885734   16083   0.01064981   257982   25.24410730    confirmed
20043   2013-09-14 16:18:17   2:17:04   122606366   52388   0.01310560   257979   25.25859928    confirmed
20042   2013-09-14 14:01:13   0:34:28   29963805   18377   0.01397606   257961   25.08078998    confirmed
20041   2013-09-14 13:26:45   3:19:09   170795001   77586   0.01602968   257953   25.09193760    confirmed

What is the IP address of the web interface of the Rpi