Complete memory dump: A complete memory dump is the largest type of possible memory dump. This contains a copy of all the data used by Windows in physical memory. So, if you have 16 GB of RAM and Windows is using 8 GB of it at the time of the system crash, the memory dump will be 8 GB in size. Crashes are usually caused by code running in kernel-mode, so the complete information including each program’s memory is rarely useful — a kernel memory dump will usually be sufficient even for a developer.