You can fit the Founder’s Edition 3070ti inside of an XPS 8940 case!  You will have to wire some additional power connectors off of the CPU power rail and this might not work with processors above 65w TDP, but additional power is necessary because the 3070 ti is 290w TDP.   My setup is still going strong but if you only have a 360w PSU, the 3060ti (or possibly 3070) is right for you!
The 3070 Ti I bought paired lovely with the 360W PSU! No need to knock on wood, either. Could pull all the wattage necessary to max it! The 500W PSU requires you to pull 2 x 54w from the SATA connectors, feed them into the 6pin PCIe connector that is a part of your 8pin to dual six pin adaptor and plug it all in! Sounds wild, right? We’ll see how it draws current when the dual SATA comes in because only 275W isn’t up for the task of covering that extra 15W needed. I’ll be here for all of the anger of my deeds and I have a spare 500W PSU to keep around or maybe give to somebody else with an XPS or G5. This same kind of set up still running on my Optiplex’s motherboard to SATA adaptor since a 1660 Ti requires less than 50W of extra juice and the 260W power supply doesn’t have a 6pin rail of its own. Still browned the connection line, but not even close  to losing amperage Its former 360W and 2060 Super are sitting around somewhere, not failing!I will let you know how it works under max load tomorrow, but its been smooth operating so far under 150W!
XPS 8940, so I just installed a 3070 Ti