max out
phrasal verb with max verb uk/mæks/ us
informal [ T ]
to spend or use the largest amount that is allowed, so you cannot spend or use any more:
When they max out their credit cards, they go to money lenders.
The general rule is to max out your hardware - fill every slot with the biggest memory card it will accept.
[ I ]
to reach the highest level possible or allowed:
The port's capacity is due to max out in around five years.
max out at sth DSL modems maxed out at a data speed of 1 to 1.5 Mbps.