Thanks it;s working 1,9-2 Mh rate can u help me with O.C settings
BTW, if you OC to much you'll notice that ccminer goes nuts with high hash rates (off the chart high), will crash or you'll see strange errors. Just back off a bit.
Hope this helps,
Carlo
Does anyone know the fix again for this problem. My multicard rig like clockwork will go nuts with highhashrates after some time. This is running stock clocks. At the minimum is there a ccminer command that can restart it every 2 hours or so? I can't find the page that discussed this solution.
How many GPU's and what OS?
Windows 8.1, AMD A6, 8gb Ram, usb powered risers. (usb risers are plugged into 4pin molex because i'm not sure if they work without being plugged in).
-I know it happens with 4 or 5 cards in the rigs (haven't reduced the cards to 1 or 2 to see if they can hash stable). Happens on both a 500watt corsair and 600watt corsair rig. Used both the last 2 latest Nvidia drivers, no change.
The other thing that happens and others have noticed as well is that 1 or more of the 750ti's will downclock to a very low clock speed. The 2 symptoms are probably related.
I thought there was some programming fix for this but it's lost in the thread.
EDIT: I've studied it and essentially one of the cards is crapping out or dropping the driver and then makes the card drop to 500mhz clock. This then causes all the other cards to lose stratum and the hashing goes wild for all the other cards. The card downclocking is the number 1 card position in EVGA precision. Does that mean it is in the first riser spot or the last x16 PCIe slot?EDIT 2: Removing the 1st x1 usb riser card along with removing the last x16 onboard card and going down to 3 cards seems to not recreate the problem. If there is anyone who has 4, 5 or even 6 750ti cards stable using ccminer on X11 can you please tell me your entire setup and config? Thanks.
I also switched 1 of the rigs to all be the exact same brand and model number and that rig is now rock solid. On the 2nd rig which is a mixed brand rig, I still get the 1st card in precisionx that always downclocks to 500mhz, but the overall rig stays hashing normally for over a day now. Now I just need to figure out the problem with that 1 card and that might be a power issue. Feel much better now.
UPDATE 2 - Solved the single downclocking card. It seems the x16 PCI-e wasn't fully locked, so resetting the card on the board and ensuring it clicked locked fixed that low hashing card problem so check those basic things if anyone has similar weird issues.
) you won't get these sort of performance with the 750ti. This will certainly be also a problem for the 880. 
