- Shut down your virtual machine.
- Open virtual machine's configuration window > Hardware > CPU & Memory
Set the required amount of RAM by entering a number manually or moving the slider:
NOTE: We highly recommend to keep the slider within the recommended range. Assigning more RAM than recommended may cause severe performance degradation of both Mac and virtual machine.
- Close the configuration window and feel free to start your virtual machine.
To learn more and virtual RAM management in Parallels virtual machines please visit KB 122705.