ASRock Z68 Pro3 Motherboard

Voltage Regulator

The CPU voltage regulator circuit of the Z68 Pro3 has four phases for the CPU main voltage (Vcc a.k.a. Vcore), one for the CPU VTT voltage (integrated memory controller and L3 memory cache), and one for the CPU VAXG voltage (integrated video controller). Therefore, it uses a “4+1+1” configuration. This is a very basic configuration, matching the market segment to which this motherboard is targeted.

Figure 8: Voltage regulator circuit

Figure 9: Voltage regulator circuit

Although the number of power phases is reduced, the ASRock Z68 Pro3 uses good components, including solid capacitors, ferrite-core coils (lower energy loss, which improves efficiency), and low RDS(on) transistors (higher efficiency). The voltage regulator for the memory and chipset voltages also uses these better-quality components.

If you want to learn more about the voltage regulator circuit, please read our tutorial on the subject.