Toshiba Qosmio X500 User Manual page 26

Memory
Slots
Disclaimer (Memory (Main System))
For more information regarding Memory (Main System), please refer to
the Disclaimers section in Appendix E or click the *2 above.
Video RAM
If your computer is configured with more than 3 GB memory, the memory
might be displayed as approximately 3 GB only (depending on the
computer's hardware specifications).
This is correct because the operating system usually displays the
available memory instead of the physical memory (RAM) built into the
computer.
Various system components (like the video adapter's GPU and PCI
devices like Wireless LAN, etc.) require their own memory space. Since a
32-bit operating system cannot address more than 4 GB of memory, these
system resources overlap the physical memory. It is a technical limitation
that the overlapped memory is not available to the operating system. Even
though some tools might display the actual physical memory built into your
computer, the memory available to the operating system will still be
approximately 3 GB only.
Computers configured with a 64-bit operating system can address 4 GB or
more of system memory.
Power
Battery Pack
User's Manual
PC2-6400 or PC3-8500 1GB, 2GB, 4GB memory
modules can be installed in the two memory
slots. Maximum system memory size and speed
depend on the model you purchased.
The memory in a computer's graphics adaptor,
used to store the image displayed on a bitmap
display.
The amount of Video RAM available is
dependent on the computer's system memory.
Start Control Panel
Personalization
resolution.
The amount of Video RAM can be verified by
clicking the Advanced Settings button in the
Screen Resolution window.
Your computer is powered by a rechargeable
lithium-ion battery pack.
*2
Appearance and
Display Adjust
Introduction
1-3