MSI A55M User Guide - Page 28

pulses creaTe EMI ElecTromagneTic InTerference. tHe Spread SpecTrum funcTion

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Spread Spectrum When the mainboard's clock generator pulses, the extreme values (spikes) of the pulses create EMI (Electromagnetic Interference). The Spread Spectrum function reduces the EMI generated by modulating the pulses so that the spikes of the pulses are reduced to flatter curves. Important * If you do not have any EMI problem, leave the setting at [Disabled] for optimal system stability and performance. But if you are plagued by EMI, select the value of Spread Spectrum for EMI reduction. * The greater the Spread Spectrum value is, the greater the EMI is reduced, and the system will become less stable. For the most suitable Spread Spectrum value, please consult your local EMI regulation. * Remember to disable Spread Spectrum if you are overclocking because even a slight jitter can introduce a temporary boost in clock speed which may just cause your overclocked processor to lock up. Lab Burst Mode When enabled, the internal core clock can be adjusted over than 132 MHz for overclocking. Overclocking Profiles Press to enter the sub-menu. Overclocking Profile 1/ 2/ 3/ 4/ 5/ 6 Press to enter the sub-menu. Set Name for Overclocking Profile 1/ 2/ 3/ 4/ 5/ 6 Give a name by typing in this item. Save Overclocking Profile 1/ 2/ 3/ 4/ 5/ 6 Save the current overclocking settings to ROM for selected profile. Load/ Clear Overclocking Profile 1/ 2/ 3/ 4/ 5/ 6 Load/ Clear the stored profile settings from ROM. CPU Specifications Press to enter the sub-menu. The submenu shows the information of installed CPU. CPU Technology Support Press to enter the sub-menu. The sub-menu shows the installed CPU technologies. Read only. 28

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28
Spread SpecTrum
WHen THe mainboard’s clock generaTor pulses, THe exTreme values (spikes) of THe
pulses creaTe EMI (ElecTromagneTic InTerference). tHe Spread SpecTrum funcTion
reduces THe EMI generaTed bY modulaTing THe pulses so THaT THe spikes of THe
pulses are reduced To flaTTer curves.
IMPORtANt
If You do noT Have anY EMI problem, leave THe seTTing aT [Disabled] for opTimal
sYsTem sTabiliTY and performance. BuT if You are plagued bY EMI, selecT THe
value of Spread SpecTrum for EMI reducTion.
tHe greaTer THe Spread SpecTrum value is, THe greaTer THe EMI is reduced, and
THe sYsTem will become less sTable. For THe mosT suiTable Spread SpecTrum
value, please consulT Your local EMI regulaTion.
Remember To disable Spread SpecTrum if You are overclocking because even a
sligHT jiTTer can inTroduce a TemporarY boosT in clock speed wHicH maY jusT cause
Your overclocked processor To lock up.
Lab BursT Mode
WHen enabled, THe inTernal core clock can be adjusTed over THan ±32 Mhz for
overclocking.
Overclocking Profiles
Press <EnTer> To enTer THe sub-menu.
Overclocking Profile ±/ 2/ 3/ 4/ 5/ 6
Press <EnTer> To enTer THe sub-menu.
SeT Name for Overclocking Profile ±/ 2/ 3/ 4/ 5/ 6
Give a name bY TYping in THis iTem.
Save Overclocking Profile ±/ 2/ 3/ 4/ 5/ 6
Save THe currenT overclocking seTTings To ROM for selecTed profile.
Load/ Clear Overclocking Profile ±/ 2/ 3/ 4/ 5/ 6
Load/ Clear THe sTored profile seTTings from ROM.
CPU SpecificaTions
Press <EnTer> To enTer THe sub-menu. tHe submenu sHows THe informaTion of
insTalled CPU.
CPU tecHnologY SupporT
Press <EnTer> To enTer THe sub-menu. tHe sub-menu sHows THe insTalled CPU
TecHnologies. Read onlY.
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