[SOLVED] How would you connect these 2 PSUs?

[nedim1511]

Hey guys 👋
I have 4 GPUs for mining:

• ASUS RTX 3080 TUF OC 10G
• Sapphire Vega 64 Limited Edition 8GB
• 2 x Gigabyte RX 580 8 GB

These 4 GPUs would be connected to a motherboard Gigabyte B460 HD3 that has 5 PCIe slots, using risers.
I have 2 PSUs available that I would like to use in the rig:

• INTER-TECH Power Supply Great Wall M1200 (1250 W)
• Corsair RM 750 W

The main question that bothers me is how I can connect both PSUs to power the rig since one is not enough and the motherboard only has a 1x 24 pin slot, 1x CPU power slot, etc... Have you maybe used 2 PSUs similar to these above?
How would you do it? Thanks.

 

[jay32267]

Essentially you need to connect the 0V reference together on both PSUs.

 

[nedim1511]

Essentially you need to connect the 0V reference together on both PSUs.

Sorry, can you clarify a little bit. I cannot follow you. The PSU looks like this:
https://www.corsair.com/us/en/Categ...™-80-PLUS-Gold-Power-Supplies/p/CP-9020195-NA

What is and where is 0V reference? Thanks.

 

[jay32267]

The ground.
https://pc-mods.com/blogs/psu-pinout-repository/corsair-psu-type-4-cables-pinout

 

[nedim1511]

The ground.
https://pc-mods.com/blogs/psu-pinout-repository/corsair-psu-type-4-cables-pinout

Thanks for clarifying it a little bit. So I need to connect the 2 PSUs by finding a cable between them that will go into these black squares since they are the ground? Does the cable go in GPU, CPU, Molex, or other inputs?

 

[jay32267]

No.
Just connect one black from each together with about 16 gauge wire.