BIOS Setup
▶CH1/ CH2 tRTP
Time interval between a read and a precharge command.
▶CH1/ CH2 tFAW
This item is used to set the tFAW timing.
▶Current CH1/ CH2 tdrRdTRd/ tddRdTRd/ tsrRdTWr/ tdrRdTWr/ tddRdTWr/ tsrWrTRd/ tddWrTWr/ tsrRDTRd/ tsrWrTWr
These item show the advanced DRAM timings.
▶Channel
1/ Channel2 Advanced Memory Setting
Setting to [Auto] enables the advance memory timing automatically to be determined by BIOS. Setting to [Manual] allows you to set the following advanced memory tim- ings.
▶Memory Ratio
This item allows you to set the memory multiplier.
▶Adjusted DRAM Frequency (MHz)
It shows the adjusted DRAM frequency.
This item allows you to set the QPI multiplier. ▶Adjusted QPI Frequency (MHz)
It shows the adjusted QPI frequency.
▶Auto Disable PCI Frequency
When set to [Enabled], the system will remove (turn off) clocks from empty PCI slots to minimize the electromagnetic interference (EMI).
▶DRAM Voltage (V)
These items are used to adjust the voltage of Memory.
▶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 over- clocked processor to lock up.