Gigabyte 990FXA-UD3 Motherboard
Voltage Regulator
Contents
The CPU voltage regulator circuit of the Gigabyte 990FXA-UD3 has eight phases for the CPU main voltage (VDD a.k.a. Vcore) and two for the CPU VDDNB (integrated memory controller, HyperTransport interface controller, and L3 memory cache) voltage. Therefore, it uses an “8+2” configuration.
The voltage regulator is shown in Figure 8.
Figure 8: Voltage regulator circuit
The Gigabyte 990FXA-UD3 uses solid electrolytic capacitors. 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.