Extremely difficult to get cards to show up and machine crashes fast when mining

[Vaim]

I bought:

MSI Z270 SLI PLUS
6x GTX 1060 6GB (4 arrived so far)
Celeron G3930
4GB RAM
120GB SSD
2x 600+W psu (seasonic 620W atm, real ones not here)

Windows 10

I set everything up and started adding cards one by one, but they just will not show up, whatever i do.

Very often the machine will not even give me a picture after adding a second card.

I have 7 or so USB risers from a few years back and never used them.

I am virtually out of ideas.

Trying to add a card to any slot often results in no signal on HDMI or if i boot and get to bios, the card is simply not there when i look at "Board browser".

When i finally got 2 cards detected, the machine freezes after less than a minute of trying to mine.

This is frustrating as hell. Could all my risers be bad?

[Vaim]

After a grueling trial and error, i have concluded that either the motherboard is broken or all my risers are dead except 2.

And in some pcie slots the cards work and in some they dont....is this normal?

I have a 3gpu mining pc already and did some mining a few years back but this seems absurd.

Are there rules as to where i'm allowed to plug the cards for them to start working?

[joaocha]

Google search "motherboard_name_here mining 6 gpus"

some of chipsets are crappy and cant run more them 3 or 4 gpu at same time

The z170 are known for being a pain in the ***, maybe z270 have the same problems,

try updating bios

[Vaim]

Google search "motherboard_name_here mining 6 gpus"

some of chipsets are crappy and cant run more them 3 or 4 gpu at same time

The z170 are known for being a pain in the ***, maybe z270 have the same problems,

try updating bios

That's the thing.
Since i needed to build a frame too, i followed this vid https://www.youtube.com/watch?v=MA_sH4q2toU

They seemed to have no problem making 6 GPUs appear, so i assumed it was a safe buy.

Gonna need to get some new risers then...hopefully this is all that's wrong.

[Vaim]

Currently got 2 cards directly on the board and 2 on risers...4 connected and clocking in at ~90Mh/s

Hopefully it was all about bad risers and 6 is still possible.

[Vaim]

Happy to report that i got 5 gpu's connected when i used new risers.

Not going to try more for now.

And if anyone ever reads this thread, setting PEG to Gen1 produced lower hashrates and unstable gpu load (fluctuated between 90-100% gpu usage)
When i set it back to auto, it is stable at 100% usage.

https://i.imgur.com/BJWC5nI.png

[philipma1957]

Happy to report that i got 5 gpu's connected when i used new risers.

Not going to try more for now.

And if anyone ever reads this thread, setting PEG to Gen1 produced lower hashrates and unstable gpu load (fluctuated between 90-100% gpu usage)
When i set it back to auto, it is stable at 100% usage.

https://i.imgur.com/BJWC5nI.png

All my five cards builds on z270 were easy to do.

[Vaim]

Happy to report that i got 5 gpu's connected when i used new risers.

Not going to try more for now.

And if anyone ever reads this thread, setting PEG to Gen1 produced lower hashrates and unstable gpu load (fluctuated between 90-100% gpu usage)
When i set it back to auto, it is stable at 100% usage.

https://i.imgur.com/BJWC5nI.png

All my five cards builds on z270 were easy to do.

Would have been easy if i didn't have an absurd amount of dead unopened risers (6 out of 8 )

[andylittleton]

I've had very similar issues.

windows 10 would not detect the added additional cards.  To fix this I reinstalled the nvidia video drivers and windows was finally able to detect it.  I think i was swapping different models constantly, 970 gtx 1070 gtx and 1080 ti.

In one case I had computer cut power when trying to initially mine.  Happened 3 times but now it seems to be stable for now.  I'll have to keep an eye on it.

I also had a couple of bad risers where my monitor got no signal.  I had to start with 1 video card and a working riser and work my way up

What a headache.  Mining ain't easy

My two pc specs
biostar motherboard tb350
ryzen 1400 and 1700
evga p2 and t2 1000 watt power supply
windows 10
evga 1080gtx ti  (3x on each machine for now gonna work my way up to 6x) and get additional power supply
20 amp circuit breaker and 12 gauge wire to 20 amp outlet.