Re: Consolidated Litecoin Mining Guide for 5xxx, 6xxx, and 7xxx GPUs
I think I had them disabled already, but just for kicks I enabled one of the buttons on one card .. it destroyed the hashrate and now cgminer reports it as "sick" whatever that means 
as an update, before i tried to push that blue button, i upgraded to 13.10 drivers and it got me about 5 more kh so I was at 525kh for each card... now i'm wrestling to get all 4 working again ... don't push that button!
as an update, before i tried to push that blue button, i upgraded to 13.10 drivers and it got me about 5 more kh so I was at 525kh for each card... now i'm wrestling to get all 4 working again ... don't push that button!
Since the button just enables a second BIOS, Id try powering the whole machine off completely, then disable the buttons and power it back on. That should put you right back to where you were.
i did this, then when it came back up from rebooting, bam! cgminer only saw 2 cards again. so I went into my bios (asus rampage iv) which has a GPU post menu to see what GPUs the bios sees. It seems that some times when I boot, it only sees 2, other times it sees 3, i've only had it see all 4 about twice.
i searched through the manual over and over to no avail. There's an 'ez_plug' which is supposedly extra power for the pci-e slots, but i thought this is not needed if each card receives its own power (each from its own rail which is how i have it setup).
Maybe the bios needs the extra juice to just turn on all 4 slots at once. I'll see about how to get an extra plug in there, maybe that's it. (wishful thinking lol)
edit: did some research on this and it turns out that you are supposed to plug in the ez_plug when running 4 GPUs which is an additional 6pin PCIe connector, which I seem to be lacking on my silverstone st1500... with 4 gpus, it takes up all the pcie connections, so I am going to have to use one of those dual molex to 6 pin adapters to get the extra power. I guess it allows extra power to the x16 only slot to be able to turn on when there's 3 other gpus plugged into pcie slots 2,3 and 4...
oh well I guess i'll settle for 2 gpus mining until i can get to the store for that connector :/
in other news, the powerboost button, I turned it off on that one card, and have rebooted/reseated it several times and cgminer just keeps reporting it as being sick, then dead after 15 minutes. It was working flawlessly (at the same crappy 525kh/s) prior to pushing that button.
I think since I have time, I will exchange it for one of the gigabyte versions that FullLife mentioned since he was able to get ~720 kh with it. If that works with similar settings etc, I will probably exchange all three for that card.