My rig freezes when mining eth

[john1010]

And psu can now handle the load.

as a rule of thumb 60% on an atx works well 24/7/365. and 1300 x .60 = 680 watts.

Just realized that 1300 x.6 is 780 watts

Anyway, I kept changing the voltage down to 875mV for both core and memory and it is still stable.
How much is it safe to downvolt?, I don't dare to put any lower value.

I don't think its your PSU. If you want to eliminate your PSU as the culprit just run the miner with reduced intensity, basically run it at 50% and see if it runs then. It will use less power and you can see if its your issue or not.

Try what I suggested and get your motherboard manual and find out about the available lanes on your PCIe slots.

Do you think that the problem of freezing rig is not a pSU related problem? In my experience I've cleaned my mobo with cleaners then I also tried the randomly change my riser slot to my pcie but the problem remains. 

[Zucca]

I don't think its your PSU. If you want to eliminate your PSU as the culprit just run the miner with reduced intensity, basically run it at 50% and see if it runs then. It will use less power and you can see if its your issue or not.

Try what I suggested and get your motherboard manual and find out about the available lanes on your PCIe slots.

The problem was solved when I downvolted from 1150mV to 950mV, now my rig is perfectly capable of mine with 6 gpu.
Now I am just reducing voltage to reduce costs, so I downvolted to 875 which is the value I have found on some settings that other users recommended.

[Rowenta]

I don't think its your PSU. If you want to eliminate your PSU as the culprit just run the miner with reduced intensity, basically run it at 50% and see if it runs then. It will use less power and you can see if its your issue or not.

Try what I suggested and get your motherboard manual and find out about the available lanes on your PCIe slots.

The problem was solved when I downvolted from 1150mV to 950mV, now my rig is perfectly capable of mine with 6 gpu.
Now I am just reducing voltage to reduce costs, so I downvolted to 875 which is the value I have found on some settings that other users recommended.

So what's the culprit here? Looks like you have limited power supply, if reducing the voltage works then it's the power, I'm glad you are able to figure things out, can you share the exact watt that your GPUs are pulling? Thanks

[Zucca]

So what's the culprit here? Looks like you have limited power supply, if reducing the voltage works then it's the power, I'm glad you are able to figure things out, can you share the exact watt that your GPUs are pulling? Thanks

Memory: 2100@875mV
Core: 1050@875mV

31.2mh and 97w

I have 6 identical gpu, three of them turn unstable after 3 hours with that config, so I have reduce them its memory frecuency to 2050 reducing its performance to 30.7mh and 94w.

[adaseb]

Its very strange that it would freeze because it was pulling too much power. I think on stock voltage those GPUs pull maybe ~150-160Watts each, so 6 of them is around 1000kw. The PSU should still be able to handle it because if I recall the G2 1300W PSU was single rail. So it didn't matter which way it was delivering power.

If you got a quality PSU you can run it at 80% load most of the time and not get any issues. I remember back in the Antminer S2 days, those pulled 1000Watts out of the box and the PSU included was a 1000Watt PSU. And basically a large percentage of them ended up failing since they ran at 100% load non-stop but there was also tons that ran fine at 100% load for years. Hence 80% load on a quality PSU shouldn't be an issue.

[Zucca]

Its very strange that it would freeze because it was pulling too much power. I think on stock voltage those GPUs pull maybe ~150-160Watts each, so 6 of them is around 1000kw. The PSU should still be able to handle it because if I recall the G2 1300W PSU was single rail. So it didn't matter which way it was delivering power.

If you got a quality PSU you can run it at 80% load most of the time and not get any issues. I remember back in the Antminer S2 days, those pulled 1000Watts out of the box and the PSU included was a 1000Watt PSU. And basically a large percentage of them ended up failing since they ran at 100% load non-stop but there was also tons that ran fine at 100% load for years. Hence 80% load on a quality PSU shouldn't be an issue.

Maybe it is something about voltage, this PSU used to handle larger loads, even 1200w. I also tried with a newer PSU I have, an NXZT Hale90 1200w, and it kept freezing as well.

[john1010]

I got 87-97w per card, how could it be the power supply deficiency is the reason why my rig was freezing, I also tried to change risers, usb cable, riser power cable etc, but i have the same problem, by the way I already use my cards a year ago, but Im only using it for lessthan 5 months then I was decided to stop and dissembling my rigs.