Acer Aspire T310, Руководство по обслуживанию

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26 Chapter 2
The following table describes each parameter under the sub-menu. Settings in boldface are the default and
suggested values.
The other two parameters under the Advanced Chipset Features are presented below. Settings in boldface
are the deafult and suggested values.
AGP & P2P Bridge Control
Press [Enter] to enter the sub-menu and the following screen appears:
Parameter Description Options
Current CPU Frequency /
Current DRAM Frequency Shows the CPU and DRAM frequency.
Performance Mode Enables this item to enhance the system
performance. Enabled
Disabled
DRAM Timing Control Enables you to select the CAS latency time in
HCLKs of 2, 2.5, or 3. The value is set at the
factory depending on the DRAM installed. Do not
change the values in this field unless you change
specifications of the installed DRAM or the
installed CPU. By SPD
Manual
DRAM CAS Latency This item controls the timing delay (in clock
cycles) before the DRAM starts a read command
after receiving it. 2T, 2.5T , 3T
RAS Active Time(tRAS) This item allows you to set the amount of time a
RAS can be kept open for multiple accesses.
High figures will improve performance. 4T, 5T, 6T , 7T, 8T, 9T
RAS Precharge Time(tRP) This is the duration of the time interval during
which the Row Address Strobe signal to a DRAM
is held low during normal Read and Write Cycles.
This is the minimum interval between completing
one read or write and starting another from the
same (non-page mode) DRAM. Techniques such
as memory interleaving, or use of Page Mode
DRAM are often used to avoid this delay. Some
chipsets require this parameter in order to set up
the memory configuration properly. The RAS
Precharge value is typically about the same as
the RAM Access (data read/write) time. 2T, 3T , 4T, 5T
RAS to CAS Delay(tRCD) This is the amount of time a CAS is performed
after a RAS. The lower the better, but some
DRAM does not support low figures. 2T, 3T , 4T, 5T
Parameter Description Options
AGP Aperture Size This setting controls just how much system RAM
can be allocated to AGP for video purposes. The
aperture is a portion of the PCI memory address
range dedicated to graphics memory address
space. Host cycles that hit the aperture range are
forwarded to the AGP without any translation. 32MB, 64MB, 128MB , 256MB,
512MB
Graphic Window WR
Combin This item determines whether the graphic
windows base address is valid or not. Enabled
Disabled
AGP Fast Write Support Enables and disables AGP Fast Write Support. Disabled
Enabled
AGP Data Rate This item allows you to control AGP card data
transfer rate. Auto , 1x, 2x, 4x ,8x