MSI H55M-P33 - Manual (Page 58)

3-22
BIOS Setup
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MS-7636 BIOS Setup
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MS-7636
tsrWrTRd/ tddWrTWr/ tsrRDTRd/ tsrWrTWr
These tem show the advanced DRAM tmngs.
Channel 1/ Channel2 Advanced Memory Settng
Settng to [Auto] enables the advance memory tmng automatcally to be determned
by BIOS. Settng to [Manual] allows you to set the followng advanced memory tm-
ngs.
Memory Rato
Ths tem allows you to set the memory multpler.
Adjusted DRAM Frequency (MHz)
It shows the adjusted DRAM frequency. Read-only.
QPI Rato
Ths tem allows you to set the QPI multpler.
Adjusted QPI Frequency (MHz)
It shows the adjusted QPI frequency. Read-only.
ClockGen Tuner
Press <Enter> to enter the sub-menu and the followng screen appears.
CPU Ampltude Control/ PCI Express Ampltude Control
These tems are used to select the CPU/ PCI Express clock ampltude.
Adjust PCI-E Frequency (MHz)
Ths field allows you to select the PCIE frequency (n MHz).
Auto Dsable DRAM/PCI Frequency
When set to [Enabled], the system wll remove (turn off) clocks from empty DIMM and
PCI slots to mnmze the electromagnetc nterference (EMI).
CPU Voltage (V)/ DRAM Voltage (V)/ PCH 1.05(V)
These tems are used to adjust the voltage of CPU, Memory and chpset.
Spread Spectrum
When the manboard’s clock generator pulses, the extreme values (spkes) of the pulses
create EMI (Electromagnetc Interference). The Spread Spectrum functon reduces the
EMI generated by modulatng the pulses so that the spkes of the pulses are reduced
to flatter curves.
Important
If you do not have any EMI problem, leave the settng at [Dsabled] for optmal system
stablty and performance. But f you are plagued by EMI, select the value of Spread
Spectrum for EMI reducton.
The greater the Spread Spectrum value s, the greater the EMI s reduced, and the
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