Need help to connect 12 1080ti to 2 EVGA 1600w PSU

[philippew]

Hi there,

I'm trying to figure out how I can connect all my 12gpus to my 2 1600w PSU. There aren't enough connections and between laying 1 card around or buying one more psu I will have to stay with the card.

Here's what I got for now:

https://image.ibb.co/id9g4k/Captura_de_Tela_2017_07_23_a_s_21_01_32.png

Sata1/PERIF will connect to 1 8pin of the gpu while the other PSU will do the other 8pin using same ports.

[1714864367]

1714864367

[Flying Hellfish]

First thing to do is read this.

https://bitcointalk.org/index.php?topic=2017600.0

[Undefined31415]

Quick question, are you planning on using all 12 1080ti cards with one motherboard? That will probably be a huge pain to get running, if it can even be done. 6 of those cards at about 250W each gets you up to about 1500W, cutting it close even with a high-quality 1600W PSU. (I'm hoping that you're only trying to power the cards themselves with these 2 PSUs.) Without more information, I currently can't see this being a stable system, especially when run 24/7.

Additionally, using 2 power supplies on one rig when you're that close to the max rating on each doesn't give you much flexibility or room for error when trying to balance the load evenly to keep both PSUs operational. It also adds another possible point of failure.

Tl;dr: Consider making 2 separate rigs and power each independently. (I still wouldn't trust one 1600W PSU to fully power a rig with 6x 1080ti cards, though.)

[Set Ready Go]

You could add a third psu to get some headroom If necessary.

[dandreark1]

Buy an extra PSU ..buy some cheap server psu's from parallel miner. Saves a headache trust me. And you're likely to experience problems with powering 12 risers from two psu's as well, regardless risers take almost nothing to power it.. but using the same PSU to power the risers+the ti's gave me issues so be aware..

I split my TI builds into 1200w server psu/a smaller 650w EVGA. I let the evga power the risers mobo and the primary GPU, while the server psu powers the rest of the GPU's.. a lot of trial and error to get it working correctly but she's goin, she's goin..

lmk if you have any questions