Differential Current

Common Options : 4x Iref, 5x Iref, 6x Iref, 7x Iref

Quick Review

This BIOS feature allows you to change the amount of differential current produced by the clock driver pairs, effectively changing the voltage swing of the system clocks.

When set to 4x Iref, the current difference is four times that of Iref, the reference current source.

When set to 5x Iref, the current difference is five times that of Iref, the reference current source.

When set to 6x Iref, the current difference is six times that of Iref, the reference current source.

When set to 7x Iref, the current difference is seven times that of Iref, the reference current source.

By default, this BIOS feature is set to 4x Iref. Unfortunately, it is not known what that translate to in voltage. Not even the Iref value is known. However, the higher the differential current, the greater the voltage swing.

As a higher voltage swing improves integrity of the clock signals and overall system stability, it is recommended that you set this BIOS feature to 7x Iref for a higher differential current. However, please note that this will increase the amount of EMI (Electromagnetic Interference) produced by the motherboard.