About Memory(RAM)

phyical memory(RAM):- we can see physical memory through the windows task manager(ctrl+alt+delete) -> Performance -> physical memory
Physical Memory indicates the status of RAM for example on my PC it's value 523760
commit charge indicates the memory is using by CPU on my PC it's value 648180
if your commit charge is less than physical memory then your pc is working good and fast, otherwise it will be little slow, how slow.. it's depend on how the commit charge is more than physical memory
underneath the commit chage, the limit and peak are displaying, limit's value should be more than peak's value otherwise your computer will be very slow.
whenever the physical memory is less than commit charge it means the RAM is getting more space from hard disk through the Virtual Memory.