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/N82E16813144100GA-Z170X-Gaming GT
https://www.gigabyte.com/us/Motherboard/GA-Z170X-Gaming-GT-rev-10/sp#spMSI 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.