Certain applications might perform better with more memory available. Having more memory available to the operating system can facilitate caching, which can improve performance of the virtual machine. You can change the amount of virtual memory available to a virtual machine.

For the best balance of performance between Windows and Mac applications, do not give Windows too much memory, because it might cause your Mac to become slower. For Windows XP, 512MB of memory is ideal for Internet and office productivity applications. For Windows Vista and Windows 7, 1GB of memory is ideal for Internet and office productivity applications. These settings are the default memory settings for Windows virtual machines that VMware Fusion Easy Install creates.

Shut down or power off the virtual machine. You cannot change the setting while the virtual machine is powered on or suspended.

1

From the VMware Fusion menu bar, select Window > Virtual Machine Library.

2

Right-click the image of the virtual machine and click Settings.

3

In the Settings window, in the System Settings section, select Processors & Memory.

4

Set the amount of memory to allocate to the virtual machine by using the slider control.