Quote from: shynepapin on February 08, 2018, 07:59:54 AM

Quote from: philipma1957 on February 07, 2018, 11:36:48 PM

Okay You can do 20 1080ti's set to 200 watts of tdp and pull 4000 +say 500 = 4500 watts

my 6 card 1080ti rigs do 1275 watts so 4 go on a good 30 amp 240 volt pdu. and pull about 5200 watts.

the 7898 is 3 phase 208 volt not good.

the 9560 is designed for 120 volt it has a circuit breaker I would not try to run 240 volts as I do not know what the circuit breaker is rated for.

try to get this unit

https://www.ebay.com/itm/HP-EO4501-Modular-Power-Distribution-Unit-228481-002-24A-200-240VAC/152870314174?

with this

https://www.ebay.com/itm/HP-572210-001-Power-Distribution-Unit-PDU-Extension-Bar-Dumb-Stick-5-Outlet-C13/273043986093?

I really appreciate your feedback and guidance always. So I see you talked about the 1080ti's, did you just use them as a reference for capacity to wattage calculation. Though, I know most, if not all of your GPU rigs are now 1080ti waterblock. You run a bigger farm and have been doing this for years.Right now, I'm interested in the best Sol to Wattage ratio and also maximizing my budget. I have only been doing this for 8 months now and everything is paid for with savings so far, so I want to be careful.

With 20 1080ti at 200 watt TDP, that's running at 100% and total 4000watt and 500watt overhead for Mobo, CPU, Risers and other components in a rig, like you said 4500watt which still give me room for another rig that's about 1100watt in total, assuming my calculation is right.

24A x 240V = 5760.

Tried to pick up the Ebay linked products but the actual PDU was gone but search and found the same model, with the extension bar that's still below $100 without considering shipping or Tax. But, I don't think I would be needing an extension, why did you recommend that?

Thank you so much for taking time to respond, very well appreciated.

That pdu has 4 jacks each one uses c19 to c20 cables.

Each jack can handle 12 amps . But the master circuit is 24 amps.

If your psu are 240 volt and use c19 to c20 you can do four of them . Each one can pull 1350 watts no issue.

So a eight card 1070 rig set to 120 watts a card will pull 1050 watts. Using 4200.
That is 32 1070 set to 80% tdp.

No extension bar limits you to four psus but if you set to 120 watts you are all good

If you push to 135 watts or 90% for each card

It is 1170 a rig. That is 4680 watts