Basically each of those GPUs uses maybe max 150 Watts or so. Hence 1200Watts for GPU power and maybe 100 Watts for everything else. You can find plenty of >1300Watts PSU out there. You can also use 2 PSUs at once if you already got them handy however you will need to make sure they are grounded together and that there won't be any feedback loops or you will destroy one or both of them.
Rember don't connect +12V from one PSU to another PSU. So if you are connecting it to the GPUs, make sure you don't mix the PSUs for each GPU. So if a GPU requires 2 PCIe connections, make sure those are both from the same PSU.
Don't know what your noise tolerance is but a 2000 Watt server PSU is very loud. You can't keep it in your bed room, in your garage or basement will be fine however.
Thank you very much!! Exactly, dude had this rig in the basement. I would have it in my living room (wont be always ON).
Will consider that for 2 psu. What do you think about 1500W psu ? Is there any difference or negligible difference?
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