Toshiba SATELLITE A500 - Manual (Page 26)

1-4 User’s Manual
Satellite A500/A500D
Video RAM Video RAM depends on the model you
purchased.
Mobile Intel ® GM45 Express Chipset model/
Mobile Intel ® GL40 Express Chipset model:
Video RAM capacity shares with main memory,
and the proportion depends on Dynamic Video
Memory Technology.
Mobile Intel ® GM45 Express Chipset model in
graphic chip by NVIDIA ® GeForce ® G 210M:
External 512MB
Mobile Intel ® GM45 Express Chipset model in
graphic chip by NVIDIA ® GeForce ® GT 230M:
External 1GB
AMD M780G Chipset model/
AMD M780V Chipset model/
AMD M880G Chipset model/
AMD M860G Chipset model:
Video RAM capacity shares with main memory,
and the proportion depends on ATI
HyperMemory™.
AMD M780G Chipset model/
AMD M880G Chipset model/
AMD M870 Chipset model in graphic chip by
ATI Mobility Radeon™ HD 4570: External 512MB
AMD M780G Chipset model/
AMD M880G Chipset model/
AMD M870 Chipset model in graphic chip by
ATI Mobility Radeon™ HD 4650: External 1GB
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.