Sony PCG-K47 - Manual (Page 145)

Confirming Added Memory Capacity
After you've installed a new memory module, make sure the operating system recognizes it.
To check your system's memory
1. Turn on the computer.
2. Click Start on the Windows ® taskbar, point to All Programs, and then click VAIO Control Center.
3. Double-click System Information. The System Information dialog box appears.
4. Make sure the System Memory displayed in the System Information box matches the amount of memory
installed.
The displayed memory size may be less than the installed memory due to the amount used by the display
adapter.
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