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command starts. ▶CH1/ CH2 tRRD

Specifies the active-to-active delay of different banks.

▶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 timings.

▶Memory Ratio

This item allows you to set the memory multiplier. ▶Adjusted DRAM Frequency (MHz)

It shows the adjusted DRAM frequency. Read-only. ▶QPI Ratio

This item allows you to set the QPI multiplier.

▶Adjusted QPI Frequency (MHz)

It shows the adjusted QPI frequency. Read-only. ▶ClockGen Tuner

Press <Enter> to enter the sub-menu.

▶CPU Amplitude Control/ PCI Express Amplitude Control

These items are used to select the CPU/ PCI Express clock amplitude.

▶Adjust PCI-E Frequency (MHz)

This field allows you to select the PCIE frequency (in MHz).

▶Auto Disable DRAM/PCI Frequency

When set to [Enabled], the system will remove (turn off) clocks from empty DIMM and PCI slots to minimize the electromagnetic interference (EMI).

▶CPU Voltage (V)/ DRAM Voltage (V)/ PCH 1.05(V)

These items are used to adjust the voltage of CPU, Memory and chipset.

▶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.

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MSI H55M-E33 manual