mem_level

mem_level is a console variable available in all Source games since Left 4 Dead. This command adjust the game to allocate less or more paged pool memory.

Note:This console command is hidden by default (in Left 4 Dead 2), but can be changed using SourceMod, using sm_cvar mem_level, VScript using script Convars.SetValue("mem_level", "0-3"), or can be forced via launch options.

This can be also changed through in-game video options.