Biostar TH55XE Motherboard

Voltage Regulator

Biostar TH55XE comes with a high-end voltage regulator circuit called “Dura-MAX,” which main feature is the use of high-end MOSFET transistors from a series called DirectFET from International Rectifier (IR), which produces less heat and provides higher efficiency (i.e., lower power consumption). According to the manufacturer, the performance from two voltage regulator phases using this kind of transistor is comparable to five standard phases. These transistors also produce less electro-magnetic interference (EMI).

Figure 7: Highlights from the use of DirectFET transistors.

TH55XE has seven phases on its voltage regulator circuit, five for the CPU, two for the VTT (voltage bus that feeds the CPU L3 memory cache, integrated memory controller and CPU I/O pins) and one for the integrated graphics processor.

All capacitors used on the voltage regulator circuit and on the rest of the motherboard are solid and all chokes are ferrite models, which are better than iron chokes.

Please read our Everything You Need to Know About the Motherboard Voltage Regulator tutorial for more information.

Figure 8: Voltage regulator circuit with the heatsink.

Figure 9: Detail of some of the DirectFET transistors used.

See how this motherboard uses an EPS12V connector for the CPU.

In Figure 10, you can see all the accessories that come with this motherboard.

Figure 10: Accessories.