The option description:
This information option displays current pressure of a food of modules of operative memory. For SDRAM standard value makes 3.3 In, for DDR SDRAM — 2.5 In, for DDR2 SDRAM — 1.8 In, for DDR3 SDRAM — 1.5 V. Neredko manufacturers of motherboards overestimate it on 0.05-0.15 In for the purpose of increase of stability of work of a subsystem of memory. The raised pressure of a food often differ and «оверклокерские» (focused on dispersal) memory modules.
At some realisations BIOS there is a colour allocation of the deduced information. If pressure within norm, you see dark blue figures if it left for admissible limits, colour of figures will be replaced with the red. It is quite often possible to refuse control of the given pressure in general. For this purpose it is enough to choose for an option value [Disabled] or [Ignore] (truth, the special sense in it is not present).
Be not surprised to constant "jumps" of displayed value — accuracy of schemes of measurement of the motherboard far from an ideal affects. At the serviceable motherboard and the power unit stability of all pressure is at rather high level, to be convinced of it it is possible, having connected any normal measuring device (the voltmeter or an oscillograph).
Other options identical to destination: