Toshiba Qosmio X300 User Manual Page 24

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User’s Manual 1-3
Introduction
Memory
Some models in this series use Intel
®
Centrino
®
2 processor technology
which is based on three separate components, the Intel
®
Core
TM
2 Duo
processor, Intel
®
WiFi Link 5300AGN-OR-5100AGN and the Intel
®
PM45
Express Chipset.
Legal Footnote (CPU)*1
For more information on the CPU, please refer to the Legal Footnotes
section in Chapter 10or click the *1 above.
A 32-bit operating system can not address more than 4 GB of memory.
If your configuration has two 2 GB memory modules, only
approximately 3 GB will be reported. This is not a wrong display, but a
technical limitation of chipset, CPU and BIOS.
The reason is that various system resources (like Flash, APIC, PCI
devices, GPU) require their own address space within the available
4 GB limit. In case of 4 GB of physical memory the address space
used by the system resources overlaps the physical memory.
The operating system has not the possibility to use the memory in the
overlapped address range. This reduces the addressable memory
space available to the operating system. Because Windows only
displays the available memory instead of the computer’s physical
memory, you will only see approximately 3 GB.
Slots 1,024 MB, 2,048 MB or 4,096 MB memory
modules can be installed in the two memory
slots. Maximum system memory size and speed
are depending on the model you purchased.
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.
The amount of Total Available Graphics memory
will vary be between 1 and 2 MB depending upon
system configuration.
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