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3-2 User’s Manual
PORTÉGÉ M750
Memory
Power
Module slot 512MB, 1,024MB, 2,048MB or 4,096MB memory
modules (DDR2-800) can be installed in the
computer’s two memory slots for a maximum of
8,192MB system memory.
This computer can be equipped with memory
modules of a maximum size of 8,192MB. The
actual amount of useable system memory will be
less than the installed memory modules.
If your computer is configured with two 2 GB memory modules or more, 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.
Video RAM The amount of Video RAM available is
dependent on the computer’s system memory.
Start -> Control Panel -> Appearance and
Personalization -> Personalization -> Display
Settings.
The amount of Video RAM can be verified by
clicking the Advanced Settings... button in the
Display Settings window.
Legal Footnote (Memory (Main System))
For more information regarding Memory (Main System), please refer to
Appendix H, Legal Footnotes.
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.