If you have the option, go for the bigger, optional PSU in the XPS 8950, if it's available in a confg that only comes with onboard Intel Graphics. That way you're in good position to use your old cards and be able to upgrade to a new power-hungry GPU, if/when the time is right. Certainly check out if Win 11 drivers are available for your cards. Just like older PC models that can't even run Win 11, some older add-in cards and peripherals don't have drivers for Win 11. It's all part of forced obsolescence...
I presently have an XPS 8930 and an Inspiron 3670 which I purchased configured shipped from Dell with discreet graphics cards.  I am contemplating updating my 8930 to an 8950 and am curious as to whether or not either of these graphics cards would have compatibility issues or otherwise with an 8950: Dell Part number JTPTC, AMD Radeon RX 580 with 8GB GDDR5 Graphics Memory Dell Part number 24K8H, NVIDIA GTX 1050 The first card is from the XPS the second from the Inspiron. The reason for me having discreet graphics card is because I run dual monitors and have even ran three with my current XPS.  I do not game or have any desire to start, nor do I watch movies in 4K or do anything that is graphic-intensive, nor do I see that changing.  I am just looking to get ideas to see if I am able to save some money by using one of the cards from one of my current machines which works fine with my current monitor arrays thereby preventing me from having to screw around with Display Port and HDMI adapters to get them to work with a new video card.  Any pros or cons to this question are much appreciated, or anticipated roadblocks or configurations issues I may encounter.  Also, has Dell had the new 8950 on sale yet?  I literally just began looking earlier today at these and wasn't even aware of the fact they released a successor to the 8930. Thanks
XPS 8950, older graphics card compatibility?