Motherboard for 3 GPUs. Can I use what I have?

[wild thing]

I have 3, 3080s. Don't believe I will be getting more. I have these motherboards.

Can I use what I have to put all 3 GPU's on one MB? Or should I invest in a better MB?

MSI X99A SLI PLUS LGA 2011-v3 Intel X99 SATA 6Gb/s USB 3.1 USB 3.0 ATX Intel Motherboard https://www.newegg.com/p/N82E16813144100

GA-Z170X-Gaming GT https://www.gigabyte.com/us/Motherboard/GA-Z170X-Gaming-GT-rev-10/sp#sp

MSI Z590 Pro WIFI6 that is running one of the 3080s.

asus strix b560-g with built-in wifi running one of the 3080s.

PSU - CORSAIR HX Series HX1000 CP-9020139-NA 1000W ATX12V v2.4 / EPS12V 2.92 80 PLUS PLATINUM (3 years old)

Thanks.

[Wotan Wipeout]

First, the power supply could be a problem.
With risers you can run the 3 x 3080 on 1 board.
Dont connect 2 3080s to 1 sata cable. They take over 40 Watt from PCI-E.

[Zotak337]

First, the power supply could be a problem.
With risers you can run the 3 x 3080 on 1 board.
Dont connect 2 3080s to 1 sata cable. They take over 40 Watt from PCI-E.

Power supply isn't a bottleneck here because a single rtx3080 can draw up to 230 watts to 250 watts so that's roughly 750 watts but mine draws 224 watts using wattmeter from the wall so 1000watt powersupply is a good shot

[batsonxl]

i  would pick z590 or b560 and psu will be also enough because you will limit power.

[FP91G]

I have 3, 3080s. Don't believe I will be getting more. I have these motherboards.

Can I use what I have to put all 3 GPU's on one MB? Or should I invest in a better MB?

MSI X99A SLI PLUS LGA 2011-v3 Intel X99 SATA 6Gb/s USB 3.1 USB 3.0 ATX Intel Motherboard https://www.newegg.com/p/N82E16813144100

GA-Z170X-Gaming GT https://www.gigabyte.com/us/Motherboard/GA-Z170X-Gaming-GT-rev-10/sp#sp

MSI Z590 Pro WIFI6 that is running one of the 3080s.

asus strix b560-g with built-in wifi running one of the 3080s.

PSU - CORSAIR HX Series HX1000 CP-9020139-NA 1000W ATX12V v2.4 / EPS12V 2.92 80 PLUS PLATINUM (3 years old)

Thanks.

You have great motherboards.
The problem may arise as a result of the lack of 6-pin and 8-pin connectors on the power supply.
For your video cards you only need to use 6 pin raisers, sata and 4 pin raisers should not be used.
You may have to buy an additional power supply, just make sure that the video card and its raiser are connected from the same power supply.

[Ceyflix-Rez]

If power supply have not many 8pin plugs order for 6+8pin molex this will safe you money instead of buying a new power supply, it's what I've been using for a long time and no issues or whatsoever