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User’s Manual 3-2
Hardware, Utilities and Options
Power
Video RAM 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 Appearance and
Personalization Display Adjust
resolution.
The amount of Video RAM can be verified by
clicking the Advanced Settings button in the
Screen Resolution window.
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 adaptor’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.
Legal Footnote (Memory (Main System))
For more information regarding Memory (Main System), please refer to
the Legal Footnotes section in Appendix E.
Battery pack The computer is powered by one rechargeable
lithium-ion battery pack.
Legal Footnote (Battery Life)
For more information regarding Battery Life, please refer to the Legal
Footnotes section in Appendix E.
RTC battery The internal RTC battery backs up the Real Time
Clock (RTC) and calendar.