I have a 6 year old 8700 and it still runs fine.  I had tried to install an 1650 super and had the reset/reboot problems as well.  I went back to the original GPU and the system runs fine again.  I returned the 1650.   I read somewhere on this board that this new GPU needs to have performance set to high in system settings.  You might try to search for this post to get additional information.   I had discovered this tip after I sent the board back so I did not have an opportunity to try it out.

@aminocell -  Dell releases its own drivers because OEM hardware isn't always identical to retail hardware, even though it may appear to be the same. So that could be part of your problem, in addition to the GPU settings that @TonyD53 mentioned.

It's also possible the new GPU is producing more heat than the old card, so you should make sure all fans are clean and turn freely, and blow out all the dust from motherboard, heat sink, case vents, etc with canned air. 

You could install something like Speccy (free) to monitor CPU, GPU and HDD temps on an active basis by setting Speccy to minimize to an icon in the notification area of the taskbar. That way you can keep an eye on temps and see if they correlate with the crashes.

And given the age of this PC (no insult intended), you may also need to dismount the heat sink from top of CPU, gently clean both surfaces and apply a thin, fresh coat of good quality thermal paste. Then reattach the heat sink. Check the Service Manual for info about removing the heat sink. And lots of youtubes if you need more info about replacing thermal paste.

Hi Tony.

Yes I tried, and it works, you can set the card to highgest performance on 3d settings on NVIDIA control panel, the problem is, it will stay that way (Always at High speed, getting more temp, and not saving energy) There is a third option there "Adaptive". After verifying that it worked stable on higest performance, I switched to "Adaptive" and this one also keeps the card stable, but not always at highest performance. So Adaptive was better for me, as I dont want the card always running at high performance. Anyway you have to disable link state power management for pcie on every power plan (If you switch the power plan to save energy, you may forget about the link state power management, and inmmediately you start getting the resets.). Thats all, the card works justs fine and after changing these values, you can overclocked with FireStorm (Mine is a Zotac) without a problem, it just runs stable. Sorry to learn you returned your card, I was algo going to do the same at some point.

Can't blame Dell for this one. They don't support after-market (retail) video cards. They only support the OEM cards they sell...

Probably NVidia is at fault because they should tell you what changes their cards need, and partially Microsoft because they set all the default  Windows power options to save the most energy, and we pay the consequences...

https://docs.microsoft.com/en-us/windows/client-management/troubleshoot-event-id-41-restart

The official Microsoft about event ID 41, always point to a hardware issue... Well... it is not!, and people opening their cases, switching RAM modules, changing their PSUs, getting in risk of damaging other system components (Most people dont even use an anti static band..)

It will be nice to warn xps 8700 owners about this somehow. And Im sure it happens on other hardware, as I saw similar issues with other configurations.

I have to add .. there is no need for the default maximum performance plan. I created a new one for example from the maximum performance one, and set the processor minimum to 25 and maximum to 100. In this way you give the processor the capability of saving energy. Anyway, in my experience is only the link state power management what matters.

After Testing, it seems there is no need to change Windows power plans, no need for Disable link state power management.

Only changing the power management mode in NVIDIA Control panel to "Adaptive" seems solves the issue.

So no Dell or Microsoft issue.. Thanks DELL!

Plase Dell we need Bios A15, to fix this compatibility issue!!.

Well... further testing, confirms Link State Powermanagement must be disabled!. So the 2 solutions discussed are needed. Also NVIDIA confirms this is a DELL Issue. So the card is not 100% compatible with this system, and probably other similar cards are also not. They will work if you know this troubleshooting, otherwise it would be painfull for you.

Please Dell can you fixit? With a new BIOS version. We need BIOS A15.

Note, the June 2013 XPS 8700 is not on the Windows 10 1803/1809/1903/1909/2004 validated list. Windows 10 1709 was the last version that we officially tested and validated on the XPS 8700.

"Dell we need Bios A15, to fix this compatibility issue."

I do not see us spending the time and resources to create/test/validate a BIOS for 2019 and later video cards for this XPS 8700. By Dell standards, the XPS 8700 end of life was June 2016, 3 years from its release date. From that point on, all we did was provide driver updates to fix issues with the validated OEM hardware. And of course the overexaggerated Intel SA stuff. The last BIOS that we released that was not Intel SA was five years ago July 2015.

So your workaround is the only way to go.

Thanks