Multiple PSU mining rig sanity check

[jimdove31]

Hello,

I want to build a rig with 13 1080 TI's and I want to ask around if there are any caveats that I'm overlooking and a little advice if there are.

I want to fit them on a ASRock H110 Pro BTC+ 13GPU Mining Motherboard using PCI risers (of decent quality of course).

My biggest issue is with energy. The 1080 ti is rated at about 250w, even more for versions like the zotac extreme editions, so I expect that I should need around 4000W to be safe.

I couldn't find a server PSU that outputs this kind of energy at a good price (and I would also have possible trouble mounting it to a conventional motherboard), so I'm thinking of installing multiple ATX PSU's to cover for this power demand.

While it is possible to have them power different components independently, I saw around here that I could get some add2psu devices to get them in sync such that hardware won't get damaged in the case of a power outage or any other similar issues. I'm wondering if there are any other ways of achieving this or whether there are similar devices on the market.

As for the rest of the components, the ram, the mounting rack and the processor, I think things are pretty straightforward.

Could anybody confirm that I am on the right track here? Or is anything that I'm missing or should pay particular attention to?

[NameTaken]

2400w server PSU + 1200W ATX PSU.

[jimdove31]

2400w server PSU + 1200W ATX PSU.

That could work, but how do I link them together? Can they be kept separate?

[NameTaken]

2400w server PSU + 1200W ATX PSU.

That could work, but how do I link them together? Can they be kept separate?

https://www.parallelminer.com/product/x11-breakout-board-adapter/

Couple with an ATX power supply for GPU mining with Sync ON/OFF

[adaseb]

You don't need any of that.

Just buy 2 PSUs. Make sure they are grounded together. Use a paperclip for the aux PSU.

Start the AUX PSU first and 0.5 seconds later start the main PSU.

Been working since 2013.

[newmz]

You don't need any of that.

Just buy 2 PSUs. Make sure they are grounded together. Use a paperclip for the aux PSU.

Start the AUX PSU first and 0.5 seconds later start the main PSU.

Been working since 2013.

I have to ask you - since this has been the issue that I've argued endlessly with people about - do you only use the PCIe outputs on the second PSU, and power ALL risers from the one that powers the motherboard? This was what I was taught by an electronics engineer, but when you get into mobos that can have 13 GPUs on them, where the hell will you find a PSU that can power 13 risers? I guess you just modify and extend molex outputs....

[blockchange88]

https://www.amazon.com/gp/product/B076CW3YPN/ref=as_li_qf_sp_asin_il_tl?ie=UTF8&tag=blockchange-20&camp=1789&creative=9325&linkCode=as2&creativeASIN=B076CW3YPN&linkId=069407af96a8bcf2923871bd798aa22e

thats all you need. changed the game for me. connect both mobo wires to this, and then plug into your mobo.

[adaseb]

You don't need any of that.

Just buy 2 PSUs. Make sure they are grounded together. Use a paperclip for the aux PSU.

Start the AUX PSU first and 0.5 seconds later start the main PSU.

Been working since 2013.

I have to ask you - since this has been the issue that I've argued endlessly with people about - do you only use the PCIe outputs on the second PSU, and power ALL risers from the one that powers the motherboard? This was what I was taught by an electronics engineer, but when you get into mobos that can have 13 GPUs on them, where the hell will you find a PSU that can power 13 risers? I guess you just modify and extend molex outputs....

It doesn't matter which is plugged in where.

Just make sure you don't mix the +12V between the 2 PSUs. So if a GPU requires 2 x 6 pin connector, connect both of those connectors to 1 PSU only. Because they are shorted together on the GPU and if you connect from 1 of each, you will damage your PSUs.

[jimdove31]

Thank you very much for the PSU suggestions.

I assume that the rest of the components look alright for building a rig.