GTX 1080 crashes at any memory overclock

[redakaafarani]

Hello miners, I started mining not too long ago, at first I had 4 cards, 2 RX 570’s, 1 GTX 1080 ti and 1 GTX 1080. Today, I got another GTX 1080 (MSI gaming X), I connected it to another power supply (I’m using dual PSU’s, one is 1000 watts the other 520), the rig turned on and immediately crashed with the following error:

GPU2 GPU2 search error: an illegal memory access was encountered

And GPU2 is the newly added GTX 1080. I reset the OC’s to 0 with the pill still on and it still crashed, so I added 120 seconds delay in the OC for the pill and it worked, the card reached ~30.5MH/s as you can see in the photo however, if I try any MEM OC on this card, it crashes immediately with the same error. I can mess with the core but it doesn’t seem to improve the hashrate, however even 10 in the MEM makes it crash, any idea what’s wrong with that card?

[Thalcore]

Hello and good day.

I think I just solved my 1080 issues so I wanted to pass on what I have done to get mine working.

So I’m using NBminer

I had the same issue, my 1080 was stuck at 30.5ish MH/s ( with eth pill ) and any sort of overclocking would cause it to crash, and it would not restart, I had to remove all overclocks, and reboot in 30s to get it back up.

I tried playing with typing “–mt”:“4,4,6,4” I have 4 cards, the 6 ( or 3rd card ) is the 1080, the rest are 1070’s and 1 1060. I think The memorytweak command is for NVidia only. I really didn’t notice much from it.

Then I read alot of forums of people playing with delay timers.

Thats when I got it working.

I have my 1080 now set to +100 core clock and +1200 memory with the eth pill enabled bringing my Hastrate up to 35.5MH/s

How i did it was

Put a 300 second delay in the overclock.

Then a 600 second delay in the pill

My card needs a few min before I put the overclock on, then a few more before I dose it.

Now it is running stable at 35 MH/s

[Murkas]

Hey! Im having the same problems that u seem to have solved! Im using nicehash quickminer. Usually using the profiles they have but, its only one that is working the efficient one. If i choose High for example my card crashes or medium or even lite.

Im interested into how to:

Put a 300 second delay in the overclock.

Then a 600 second delay in the pill

or something like that.

Im using the OCtune in the web browser… wounder if u have any idea how to apply that?!

Best Regards Markus