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The submenu of this menu can set up QPI speed mode, frequency and other items.
If it is single CPU configuration and the "QPI Link Speed Mode" is set to be
<Fast>, the displayed status of "Current QPI Link Speed" item is "Slow".
* DIMM Information
This menu can be used to examine the information of installation slots and memo-
ry capacity of system memory.
* Intel(R) I/0AT
This item is used to open or close Intel I/O acceleration technology, including
[Enabled] and [Disabled] (defaulted setting) two items.
* VGA Priority
Set priority order of integrated graphic card and external graphic card, including
[Offboard] (Default configuration): the external graphic card is set to be the prior
device.
[Onboard]: onboard graphic card is set to be the prior device.
* Memory Mode
Set Memory mode, including [Independent], [Mirroring], [Lock Step] and [Spar-
ing] four items.
If the system memory configuration supports <Mirroring> and <Sparing>, the two
function modes status displayed above this configuration item should be "Supported",
otherwise, the status should be "Not Possible".
To realize <Mirroring> function, the second and third memory slot corresponding
to the CPU0 and CPU1 should be full of memories (under two CPU configuration, 8
pieces of memory should be inserted), and the second channel and third channel mir-
roring can be achieved. At this time, the first channel memory slot of CPU0 and CPU1
(respectively CHA_* and CHD_*) should be empty of memory. In this mode, system
available memory capacity reduces to half.
To realize <Sparing> (Memory standby) function, two pieces of 1 Rank and
2Rank memory should be installed in the respective channels of CPU0 or CPU1, name-
ly, it only supports memory standby in unit of Rank in the channel
* DDR Speed
This item is used to set DDR speed.
If the system is configured with 4Rank memory of DDR3 1066/1333MHz in-
stalled in the first DIMM of the first channel, the system Memory speed will be limited
in 800MHz, and [Force DDR3 1066/1333] will not function.
Chapter Three System Setup
17
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