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B1SA4-2750F/B1SA4-2550F Motherboard User’s Manual
Performance Tuning Mode (Available when both XMP memory and an Extreme Edition
CPU are installed.)
This item allows the user to choose the Intel Extreme Memory Prole (XMP) Specication which
enables DDR3 memory to operate beyond the standard JEDEC SPD specication. Select XMP
for 1600 MHz XMP memory operation and better system performance. Otherwise, leave this
setting at Auto.
Active Processor Cores
This feature determines how many CPU cores will be activated for each CPU. When
all is selected, all cores in the CPU will be activated. (Please refer to Intel's web
site for more information.) The options are All, 1, 2, and 3.
CPU Flex Ratio Override
Select Enabled to support CPU Flex Ratio Programming. The options are Disabled,
and Enabled.
CPU Core Ratio
Use this feature to set the CPU Core ratio. Use the keyboard to enter the desired
value for the CPU core ratio.
Chipset Conguration
Warning! Setting the wrong values in the following features may cause the system
to malfunction.
North Bridge
The following information will be displayed:
•Memory Information
•MRC Version
•Total Memory
•Memory Frequency
Pass Gate Setup
Use the following items to congure Pass Gate settings and tests.
Pass Gate Feature Enable
Select Enabled to support Pass Gate features. The options are Enabled and
Disabled.
2x Refresh Rate
Select Enabled to force the BIOS setup utility to use the x2 refresh rate in
Pass-Gate operation regardless the temperatures of the processor and the
motherboard. Refresh Rate is the total number of rows needed to refresh the
entire DRAM array. x2 Refresh Rate will take 2000 rows of memory to refresh
the entire DRAM array. The options are Disabled and Enabled.
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