my PSU's are
750W evga g2 supernova - powering 2 1080ti and their risers
1300w evga g2 supernova - powering the rest
Once I receive my new PSU a 1000w g2 supernova, I will have 3x GPU's on that one. And the 1300w will have 3x gpus + motherboard etc. Hopefully that will fix it. Dont like running it as low as 70TDP. Its minus 10 C outside, the heat is welcome this time of year.