|Physical Memory and page file (virtual memory) are two different things. Page file is hard disk space reserved by Windows to store data that RAM (physical memory) can't hold or that Windows doesn't want to hold there. |
From Windows help:
Go to Control Panel> System>
1. In the left pane, click Advanced system settings. If you are prompted for an administrator password or confirmation, type the password or provide confirmation.
2. On the Advanced tab, under Performance, click Settings.
3. Click the Advanced tab, and then, under Virtual memory, click Change.
4. Clear the Automatically manage paging file size for all drives check box.
5. Under Drive [Volume Label], click the drive that contains the paging file you want to change.
6. Click Custom size, type a new size in megabytes in the Initial size (MB) or Maximum size (MB) box, click Set, and then click OK.