Is Dell XPS 8940 Upgradable to 64 gig RAM?
Yes, Dell XPS 8940 is upgradable to 64 GB of RAM. This model supports 10th and 11th gen Intel CPUs on H470 motherboard. Making the maximum amount of RAM you can use with XPS 8940 exactly 128 GB.
What type of memory can you use with Dell XPS 8940?
Dell XPS 8940 motherboard supports up to 128 GB of DDR4-2666/2933 RAM in 4 DIMM slots with a maximum RAM speed of 2933 MT/s. This model supports dual channel memory.
Officially The Dell XPS 8940 is sold with 3200 MHz memory speed, however, the maximum memory speed depends on the CPU you are going to use. XPS 8940 with Intel Core i3/i5 processors will support maximum memory speed of 2666 MHz, and for Core i7/i9 processors, it is 2933 MHz.
Aftermarket memory modules that are reported to work with Dell XPS 8940 are Crucial CT32G4DFD832A.16FB1 and Mushkin MSL4U320NF32GX2.
Be careful with mixing and matching vendors and speeds because they may nor run properly together.