Toshiba Satellite L550 - Manual (Page 23)

User’s Manual 1-3
L550/L555/L550D/L555D
Features
This computer incorporates the following features and benefits:
Processor
Memory
Built-in The processor type varies depending on the
model. To check which type of processor is
included in your model, open the TOSHIBA PC
Diagnostic Tool Utility by clicking Start -> All
programs -> TOSHIBA -> Utilities -> PC
Diagnostic Tool.
Chipset Mobile Intel ® GM45 Express Chipset
Mobile Intel ® GL40 Express Chipset
or
AMD M780G chipset
AMD M780V chipset
AMD M880G chipset
AMD M860G chipset
AMD M870 chipset
Slots PC3-8500/PC2-6400 1 GB, 2 GB or 4 GB
memory modules can be installed in the two
memory slots of below models:
Mobile Intel ® GM45 Express Chipset model
Mobile Intel ® GL40 Express Chipset
AMD M780G Chipset
AMD M780V Chipset
AMD M880G Chipset
AMD M860G Chipset
AMD M870 Chipset
Maximum system memory size and speed are
depending on the model you purchased.
For users of a 32-bit version of Windows: 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.