This must be a joke. You got an E5-2683 v4, which can only be run with DDR4 RAM.
The lowest DIMM of DDR4 I've found has 2GB, so having only 256MB DDR4 in a machine isn't even possible (unless it's a single board computer like the Raspberry Pi or some Odroid with soldered RAM).
Not to mention that running a Xeon with low RAM is just not what they were designed for in the first place.
My advice: Go buy some RAM