Currently operating an XPS 8930 with an i7-8700 3.20GHz CPU (6 Core 12M Cache up to 4.6GHz) 16GB RAM with a Nvidia GeForce GTX 1050 Ti 4GB GDDR5 GPU contained within the Mainstream chassis w/ 460W PSU

Was considering possibly upgrading the GPU to one of the following Nvidia GeForce GTX 16 Series GPU's

 

https://www.nvidia.com/en-us/geforce/graphics-cards/gtx-1650-super/

https://www.nvidia.com/en-us/geforce/graphics-cards/gtx-1660-super/

https://www.nvidia.com/en-us/geforce/graphics-cards/gtx-1660-ti/

 

In speaking with Dell regarding this I was told that the only GPU upgrade that would allow me to remain within the limitations of warranty (having just extended my warranty with Premium Support) would be a Nvidia GTX 1060 series GPU in keeping with the 460W PSU, and do understand the connection between upgrading a GPU and staying within the limitations of the onboard PSU and would rather not begin swapping out PSU's at this point

In doing some online and forum research regarding this, and would stand corrected if wrong, I believe that warranty coverage would still be valid if I chose to use a different GPU than the suggested GTX 1060, but would not cover any failure related to the GPU and this would be understandable from Dell's position

This matter is however secondary, and is getting away from the real question regarding upgrading the GPU, but I would be interested if anybody knowledgeable would care to address it

The real issue is that I feel there would be very little if any performance gain in moving from the current GTX 1050 Ti to a GTX 1060, and the cost and availability of the GTX 1060 would be hard to justify for an older generation GPU (GTX 1060) when the newer generation GTX 16 Series GPU's are in the same (or better) price range and are much more readily available

I do understand that the Nvidia GTX 16 Series GPU's are not in the same league as their flagship RTX 20 Series GPU's and I have to limit the range of replacement GPU's that I may possibly consider upgrading to because of the 460W PSU currently onboard (again noting that I would rather not swap out the PSU at this time) but would be interested in any thoughts or comments that anybody may have regarding what I am considering regarding upgrading the GPU and staying within the PSU's 460W capabilities especially if they have any experience with the GTX 16 Series GPU's

Another question regarding the XPS 8930 Supplementary Power Pin connected to the primary PSU in the event that it was or is required, it would visually appear to be a 6 Pin Connector with an additional 2 Pin Connector attached via a very short dongle cable to the primary 6 Pin Connector, which I assume would make it compatible with a GPU requiring either a 6 or 8 Supplementary Power Pin Connector, knowing that being able to expand the XPS is one of it's primary selling points, this would seem logical but was unable to get this confirmed when speaking to the Dell Tech

Any thoughts comments or suggestions would be very much apprciated

Thanks