According to the help page of Geth,
--cache value defines
Megabytes of memory allocated to internal caching (default = 4096 mainnet full node, 128 light mode) (default: 1024)
I don't quite get it, is the default
1024 when running with the defaults (i.e. fast sync, automatically switching to full mode later on)?
I'm asking because I assume I've got some memory issues on a Intel Pentium NUC with 8 GB of RAM. Maybe, if the default is 4 GB, it helps setting
--cache 1024 to avoid these memory issues.