I have Dell's 8950 with an i9-12900K, 64 GB RAM, and a 3080. The machine came with a 1 GB m.3 SSD. Dell's 8960 series is a nice upgrade from their 8950 because have does have some cooling issues but Dell fixed that in their 8960s I heard.
With all the data I have, there was no way to fit that internally even though there are places to mount existing drives. Rather than lose the drives, I purchased an Oyen external hot-swappable drive bay. This allowed me to put all my large drives there and I placed a smaller one inside the case for the swap drive to prevent the extra wear and tear on the SSD.