"This new clocking method reduces the effect of noise on the voltage swing of the system clocks. This results in better timing margins which can translate into tighter, faster timings or better stability.
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..."
Any major computer upgrade generally requires a full software reinstall too. No so if you heed the advice in the guide to Upgrading a Motherboard without Reinstalling. PCSTATS Tips