ASRock Z77 Extreme4 Motherboard
Voltage Regulator
Contents
The CPU voltage regulator circuit of the ASRock Z77 Extreme4 has eight phases for the CPU main voltage (Vcc a.k.a. Vcore), two for the CPU VSA voltage (memory controller), and two for the CPU VTT voltage (PCI Express and DMI interfaces). Therefore, it uses a “8+2+2” configuration, which is incorrectly advertised by the manufacturer as “8+4.” The voltage regulator is controlled by an ISL6367 integrated circuit, using a hybrid design.
Figure 9: Voltage regulator circuit
The ASRock Z77 Extreme4 uses solid electrolytic capacitors, manufactured in Japan. All coils on this motherboard are ferrite-core models, which can provide up to 20% improvement in efficiency.
If you want to learn more about the voltage regulator circuit, please read our tutorial on the subject.