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3-2 User’s Manual
PORTÉGÉ M780
Power
Video RAM The memory in a computer’s graphic adaptor,
used to store the image displayed on a bitmap
display.
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.
The amount of Total Available Graphics memory
will vary be between 1 and 2 MB depending upon
system configuration.
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.
Legal Footnote (Memory (Main System))
For more information regarding Memory (Main System), please refer to the
Legal Footnotes section in Appendix G.
Battery pack The computer is powered by one rechargeable
lithium-ion battery pack.
Slice Expansion
Battery
This battery pack increases your computer’s
operating time when main battery pack is also
installed.
Legal Footnote (Battery Life)
For more information regarding Battery Life, please refer to the Legal
Footnotes section in Appendix G.