HP Z4 G4 running two Quadro RTX 5000

[Greybox]

Got a Z4 G4 with core i9-10900x, 128GB ram and 1000w psu. Trying to run two Quadro RTX 5000 (265w)+nvlink. Quickspec indicates the psu is designed to drive 2 high power cards. Comes with two 2+6 pin gpu plugs each works off a dedicated 18A/12V rail. For each plug, is it correct to assume the allowable max power draw is 291w, plug 216w (18x12) + slot 75w. The rtx needs one 8pin and one 6pin. Planning to use a 6+2 splitter with each plug. So the total gpu draw is 530w (265x2), cpu 140w and assuming the ram/other draw is less than 330w it appears feasible. Thought/suggestion? Thanks All.

[DGroves]

a very simple/quick check can be made by simply noting the total GPU power draw in watts of the card you wish to install

and then look at the HP "quickspecs" for your model system/pwr supply and note/determine  the wattage of the high end HP approved video card (hp lists them in descending order) as long as your card is at/under that wattage you should be fine

note that the above does not cover advanced configurations where other cards such as AI accelerators are also going to be used

last, using cheap no name 6 to 8 pin adapters is playing with fire as i've seen some really crappy adapters that use inferior wires and the metal connectors themselves are  also substandard if possible use the HP adapters if you don't know how to check no name adapters for proper build quality

hp adapter part number is N1G35AA ebay may have a better price so check

https://www.directdial.com/us/item/hp-6pin-to-8pin-power-supply-adapter/n1g35aa