So my Dell XPS 8950 was delivered. I took some pictures of the 1000w PSU installed. It's the RD0G0 1000W Delta unit, 80 PLUS - Platinum. The good news is the +12V rails are high current, the bad news is there seem to be only 2 Video/PCIe cables each with a 6-Pin and piggy-back 8-Pin PCIe connector. Plenty for the cards that only have 2 PCIe connectors, but installing an RTX 3090Ti for example will need a Y cable 6-Pin+6Pin-8-Pin like this: [URL] to get the required 3x 8-Pin PCIe connectors.The 6-Pin PCIe connectors on this PSU have 3x +12V pins, normally 6-Pin PCIe connectors only have 2x +12V pins. This was done presumably to be able to correctly supply the PCIe 8-Pin connectors that require 3x 12V pins. The cable used is 18AWG Polypropylene Polyethylene that is rated at 17A/90C, maximum capacity 6x17A=102A [NAME], this clearly is more than the PSU rating for both rails, 2x 36A [NAME]. So if we go by the PSU rating of 72A [NAME] to give us a total of 864W. Now, these are ideal maximums however, looking at an RTX 3090 Ti it has a rated reference of 450W-480W total draw. Some cards hit as much as 490W total in synthetic benchmarks. Even if we call it 500W and assume all of it gets drawn from the PCIe connectors and none from the slot we are still in a good place (500W demand vs 864W capacity). So using a Y cable would spread the load over a total of 6 +12V cables with the rating and capacity to supply the power needed.+12VA = 36A+12VB = 27A+12VC = 36A[IMAGE][IMAGE]
I recently placed an order for an XPS 8950 and noticed the option for a 1000w PSU. I checked the FAQ but did not find any info on this option. Does anyone have details on this PSU? I'd like to know the type (Gold, Platinum) manufacturer and the number of 6/8pin PCIe plugs. I'd like to use an EVGA RTX 3070 Ti but it needs 3 8pin PCIe power connections. Chassis Options1000W Platinum Silver Bezel Chassis including optical driveItem number: 321-BHTZ Thanks.
XPS 8950, 1000w PSU