Toshiba PSLD8U-01601E User Manual - Page 27

Video RAM, graphic chip by ATI Mobility Radeon™ HD4650.

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Introduction Video RAM*6 Depending on the model you purchased. Mobile Intel® GM45 Express Chipset: Mobile Intel® GL40 Express Chipset: Mobile Intel® PM45 Express Chipset: Video RAM capacity shares with main memory, and the proportion depends on Dynamic Video Memory Technology. Mobile Intel® GM45 Express Chipset model/ Mobile Intel® PM45 Express Chipset model in graphic chip by ATI Mobility Radeon™ HD4530. External 256 MB. Mobile Intel® GM45 Express Chipset model/ Mobile Intel® PM45 Express Chipset model in graphic chip by ATI Mobility Radeon™ HD4570. External 512MB. Mobile Intel® GM45 Express Chipset model/ Mobile Intel® PM45 Express Chipset model in graphic chip by ATI Mobility Radeon™ HD4650. External 1GB. ATI Radeon™ 3100 Graphics model: ATI Radeon™ HD 3200 Graphics model: Video RAM capacity shares with main memory, and the proportion depends on ATI HyperMemory™ 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. User's Manual 1-4

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User’s Manual
1-4
Introduction
Video RAM
*6
Depending on the model you purchased.
Mobile Intel
®
GM45 Express Chipset:
Mobile Intel
®
GL40 Express Chipset:
Mobile Intel
®
PM45 Express Chipset:
Video RAM capacity shares with main memory,
and the proportion depends on Dynamic Video
Memory Technology.
Mobile Intel
®
GM45 Express Chipset model/
Mobile Intel
®
PM45 Express Chipset model in
graphic chip by ATI Mobility Radeon™ HD4530.
External 256 MB.
Mobile Intel
®
GM45 Express Chipset model/
Mobile Intel
®
PM45 Express Chipset model in
graphic chip by ATI Mobility Radeon™ HD4570.
External 512
MB.
Mobile Intel
®
GM45 Express Chipset model/
Mobile Intel
®
PM45 Express Chipset model in
graphic chip by ATI Mobility Radeon™ HD4650.
External 1
GB.
ATI Radeon™ 3100 Graphics model:
ATI Radeon™ HD 3200 Graphics model:
Video RAM capacity shares with main memory,
and the proportion depends on ATI
HyperMemory™
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.