replace. graphics card gtx 1060 6gb

1. Will the card physically fit in the case?
   
   
2. The MSI RX6750 XT has 8-pin x 2 PCI-e connection. Will you need a PCI-e power adapter cable from the PSU to the card?
   
   
3. What size PSU do you have in your XPS 8930, 460W (standard) or 850W (optional)? The minimum recommended PSU for the MSI RX6750 XT is 650W.
   
   
4. The card supports PCI-e Gen 4 but XPS 8930 only supports PCI-e Gen 3. A Gen 4 card should work in the XPS 8930 (with suitable PSU), but it won't achieve the speed/performance it would have in a PC supporting Gen 4.

Some suggested compatible GPUs for XPS 8930 with stock 460W PSU are listed here.  Don't know how up-to-date that list is...

FWIW, you can also check what GPUs others are running in XPS 8930 at userbenchmark.com.

Caveat: the site doesn't indicate what size PSU is installed in those XPS 8930 PCs.  So just because someone is running a certain card, that doesn't mean you can run it with whichever PSU is installed in your PC.

The Power supply is a evga 600  watt bronze . Everything works as before with gtx 1060. Swapping in the rx 6750 xt , machine starts gets to dell screen. Hitting  f2 or f12 gives blue loading light and Everything stops .

@Peter c33​   if you are installing a non-Dell graphics card you may need to disable Secure Boot in BIOS first.

The Power supply is a evga 600  watt bronze . Everything works as before with gtx 1060. Swapping in the rx 6750 xt , machine starts gets to dell screen. Hitting  f2 or f12 gives blue loading light and Everything stops 

Secure boot is off

I appreciate everyone time

@Peter c33 - Is the 600W PSU adequate?

MSI's specs say the minimum recommended PSU for their RX6750 XT is 650W...

@Peter c33  Glad you got it to work, but rather odd you had to set BIOS to Legacy. 

That means you no longer have the extra security protections offered by Secure Boot and TPM. 

Maybe you should contact MSI support to see if there's a way to get it working with Legacy disabled.