Mining Rig Down-The Frustration is Real

[TRexMcStubyArms]

*UPDATE*

Replaced the riser in question.  I've been stable in mining ETH for the last hour.  No blinking!!!    I'll report back if anything changes.

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[m1n1ngP4d4w4n]

*UPDATE*

Replaced the riser in question.  I've been stable in mining ETH for the last hour.  No blinking!!!    I'll report back if anything changes.

Great, risers are often your sources of troubles, always good to have a few spare laying around 

[nathan0658@gmail.com]

*UPDATE*

Replaced the riser in question.  I've been stable in mining ETH for the last hour.  No blinking!!!    I'll report back if anything changes.

glad you are up and running. adter all that troubleshooting im sure you feel like you can fix any issue now. glad it was something easy like a riser. I have a hand full on just in case now.

Waiting for the new year before I start building Rig #2. 6-8x RX580 8GB cards (they just keep getting cheaper)

[GeePeeU]

I think that's a very good idea to have a test rig before installing in the main one.  Would definitely point out problem hardware prior to bringing it online. 

Yep, and you can assemble that test rig for next to nothing. All you need from the platform is a PCI-e x16 slot, so it can be anything as old as intel's socket 775 or amd am2. You can run win10 even with 2gb of ram, I guess, and obviously any old hdd will work too. Can source a system like this off ebay or some local classifieds for as low as $20. Then you add a PSU (doesn't have to be very powerful or efficient, I'm using some old cheap 460W coolermaster) and that's it.

I'm also running any new card I buy through the test rig first. Just to figure out the maximum overclocks and check the stability etc, make sure everything works. Then it goes to one of the rigs.

Different motherboards will also kind of determine the overclock potential for the GPUs.

So benching your cards in a test system will give you a good reference point, but it most likely wont be identical when you swap it to its home system.

[wacko]

Different motherboards will also kind of determine the overclock potential for the GPUs.

No they won't. Why would they? For CPU overclocking yes, there might be slight differences due to different VRM setups and the BIOSes using different approaches to configuring some parameters (different vdroop and LLC settings, for example), but what does the motherboard have to do with the GPU overclocking? All that matters (besides the obvious silicon lottery luck) is the power quality (PSU), and even that doesn't matter too much provided that there's enough power (unless the PSU is total crap). Never ever have my GPU OC results depended on the platform the card is used on, and that's 100+ GPUs and at least 20+ boards over the years.

So benching your cards in a test system will give you a good reference point, but it most likely wont be identical when you swap it to its home system.

What makes you think so? Have you ever had (repeatable) cases of one card running fine with set OC on one board and not being able to run with the same OC on another? With exactly the same PSU and not a faulty board? Excluding some nonsense of course, like reference rx 480 cards drawing more than 75W from the PCI-E slot, thus crashing on some boards and running better on others. In normal conditions, without anything like that?

[TRexMcStubyArms]

And the blinking/red screen is back.  Now I'm truly frustrated.  ASRock has offered to RMA my board but frankly that would mean my rig is down for weeks.

Any suggestions 

[tadeus1]

Have you tried putting 1 GPU directly on the MB, the rest 3 only on raisers?  
How much do you Overclock the memory?

[TRexMcStubyArms]

Have you tried putting 1 GPU directly on the MB, the rest 3 only on raisers?  
How much do you Overclock the memory?

No because the 1070 it block one of the PCI slots so I could only put 5 cards in instead of 6.  What would be the benefit of doing this? I'm open to it at this point.

I do overclock, around 620 on afterburner.  I also jumped power limit to 75 this morning to see if that would help.

[tadeus1]

Sorry, I am confused.  You said you have 4 GPUs -  (4) MSI 1070 GTX 8 GB GPUs,   now 6.  

Try to disable memory overclock, see how it goes for a test.

[TRexMcStubyArms]

Sorry, I am confused.  You said you have 4 GPUs -  (4) MSI 1070 GTX 8 GB GPUs,   now 6.  

Try to disable memory overclock, see how it goes for a test.

Sorry didn't mean to confuse    My end goal was to eventually have 6 in total.  That's what I sized my MB and PSU for.  The rig CURRENTLY has (4) 1070s.

I'll see how it looks when I get home from a day of mining.  I'll give the clock test a try later.

[tadeus1]

Somehow I have the feeling what you see is related to the GPU, not the MB.   That is why I suggested to remove the memory OC and just see how it goes.
If those are with Micron memory, which probably they are,  620 is a bit more than it can take long-term.

So may be try this
Keep keep TDP at 70-75% or whatever is preference for you.  (not less than 60% because hashrate drops a lot then).
Try a while with no memery OC.  See results
Increase OC of memory to 350. See results
Increase OC of memory to 500. See results.

don't OC core to more than 90-100.

[TRexMcStubyArms]

So a day of TZC mining went just went, no issues.  Here are my current OC settings:

Power Limit: 73
Temp Limit (linked to PL): 71
Core Clock: 0
Mem Clock: 620
Fan: Auto