Multiple PSUs for mining rig

[teedeexyz]

Right now I'm running a mini rig consisting of 1 GTX 980 and 1 GTX 1080 Ti.
At the moment, I've opted for a Corsair RM1000X PSU of 1000W, which can easily handle both GPUs.
However: 4 more 1080 Ti's are on their way, and my single PSU won't be able to handle those 6 GPUs.

I've read it shouldn't be a problem to use 2 PSUs for a single mining rig and using Add2PSU to switch them on at the same time.
Which second PSU would you recommend? Do I have to do something additional for them to work safely together (eg. load is balanced)?

Furthermore: what do I connect the second PSU to? Is the following a good setup?
PSU1: Mobo/CPU/HDD + main power supply to GPUs (= the 2x 8 pins on top of the GPUs) + risers of the GPUs it connects
PSU2: remaining GPUs + risers of these GPUs.

I don't want to fry 5 1080 Ti's...

[leonix007]

Right now I'm running a mini rig consisting of 1 GTX 980 and 1 GTX 1080 Ti.
At the moment, I've opted for a Corsair RM1000X PSU of 1000W, which can easily handle both GPUs.
However: 4 more 1080 Ti's are on their way, and my single PSU won't be able to handle those 6 GPUs.

I've read it shouldn't be a problem to use 2 PSUs for a single mining rig and using Add2PSU to switch them on at the same time.
Which second PSU would you recommend? Do I have to do something additional for them to work safely together (eg. load is balanced)?

Furthermore: what do I connect the second PSU to? Is the following a good setup?
PSU1: Mobo/CPU/HDD + main power supply to GPUs (= the 2x 8 pins on top of the GPUs) + risers of the GPUs it connects
PSU2: remaining GPUs + risers of these GPUs.

I don't want to fry 5 1080 Ti's...

Another Corsair 1000w will do for the second PSU, I would suggest each PSU will handle 3 GPU cards, by using Add2PSU. so what I see is that

PSU1: Mobo/CPU/HDD + two GTX 1080ti + GTX 980 includes powering up risers

PSU2: Remaining 3 GTX 1080ti's + risers powering them.

good luck

[fanatic26]

the add2psu thing is just a waste of money. Just turn the PSU powering the cards on first and you will be fine. You dont need to power cycle the cards along with the motherboard either.

[teedeexyz]

the add2psu thing is just a waste of money. Just turn the PSU powering the cards on first and you will be fine. You dont need to power cycle the cards along with the motherboard either.

Like with something like this? https://www.amazon.com/Main-Second-Power-Supply-Cable/dp/B00JIV9BRK
Would this work? Gotta trigger the power-on some way...

[CryptoWatcher420]

the add2psu thing is just a waste of money. Just turn the PSU powering the cards on first and you will be fine. You dont need to power cycle the cards along with the motherboard either.

Like with something like this? https://www.amazon.com/Main-Second-Power-Supply-Cable/dp/B00JIV9BRK
Would this work? Gotta trigger the power-on some way...

atx psu's are soo yesterday rofl and there just flat out too expensive, server psu and breakout will run you a much cheaper cost and better reliability, then all you need to get is a 13 dollar 160w pico psu to power the mobo and hard drive, much cheaper than trying to buy an atx psu that's gunna have cables going all over the place

[makomako]

the add2psu thing is just a waste of money. Just turn the PSU powering the cards on first and you will be fine. You dont need to power cycle the cards along with the motherboard either.

Like with something like this? https://www.amazon.com/Main-Second-Power-Supply-Cable/dp/B00JIV9BRK
Would this work? Gotta trigger the power-on some way...

atx psu's are soo yesterday rofl and there just flat out too expensive, server psu and breakout will run you a much cheaper cost and better reliability, then all you need to get is a 13 dollar 160w pico psu to power the mobo and hard drive, much cheaper than trying to buy an atx psu that's gunna have cables going all over the place

I agree with the server psu, you can also add there a good cable management and assurance that this psu are built to run 24/7 with platinum rated which cost less than a gold atx psu

[CryptoWatcher420]

the add2psu thing is just a waste of money. Just turn the PSU powering the cards on first and you will be fine. You dont need to power cycle the cards along with the motherboard either.

Like with something like this? https://www.amazon.com/Main-Second-Power-Supply-Cable/dp/B00JIV9BRK
Would this work? Gotta trigger the power-on some way...

atx psu's are soo yesterday rofl and there just flat out too expensive, server psu and breakout will run you a much cheaper cost and better reliability, then all you need to get is a 13 dollar 160w pico psu to power the mobo and hard drive, much cheaper than trying to buy an atx psu that's gunna have cables going all over the place

I agree with the server psu, you can also add there a good cable management and assurance that this psu are built to run 24/7 with platinum rated which cost less than a gold atx psu

more like trying to compare 1500w atx platinum rated server psu to the same wattage in ATX form, shoot just a 1000w fully modular atx psu will run you 200 to 250 which is just crap when I can get a 1500w server psu,breakout and pico for less than 200

[teedeexyz]

the add2psu thing is just a waste of money. Just turn the PSU powering the cards on first and you will be fine. You dont need to power cycle the cards along with the motherboard either.

Like with something like this? https://www.amazon.com/Main-Second-Power-Supply-Cable/dp/B00JIV9BRK
Would this work? Gotta trigger the power-on some way...

atx psu's are soo yesterday rofl and there just flat out too expensive, server psu and breakout will run you a much cheaper cost and better reliability, then all you need to get is a 13 dollar 160w pico psu to power the mobo and hard drive, much cheaper than trying to buy an atx psu that's gunna have cables going all over the place

Hmm, never considered server PSUs tbh...

Would it be OK to use my 1000W ATX PSU for the mobo and some GPUs, and use a server PSU for the other GPUs?
Which one/how many watt would you recommend?

[phundred]

If I'm not mistaken, you must connect all risers with same PSU that you connected to mobo. Second PSU to power some GPUs only.

[joshuajones02]

If I'm not mistaken, you must connect all risers with same PSU that you connected to mobo. Second PSU to power some GPUs only.

People recommend it but it's not necessary

[umine]

If I'm not mistaken, you must connect all risers with same PSU that you connected to mobo. Second PSU to power some GPUs only.

It could be a serious mistake. Just let's imagine that Secondary PSU (GPU additional power) shuts down, but that GPU continues get the power through PCIe slot....
So the GPU can be burned out.
All power connectors (i.e. riser and additional power) of single GPU should be connected to the same PSU