ECS P55H-AK Motherboard

Voltage Regulator

The P55H-AK comes with a 14-phase high-end voltage regulator circuit. Twelve of them are used for CPU main voltage (Vcc, a.k.a. Vcore) and two of them are used for the VTT rail, which feeds the CPU integrated memory controller and L3 memory cache.

As mentioned before, this motherboard comes with two passive heatsinks on top of the MOSFET transistors of the voltage regulator circuit, which are interconnected by two heatpipes. These heatpipes are also connected to the NVIDIA NF200 bridge chip and the Intel P55 chip.

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

Figure 9: Voltage regulator circuit with the heatsinks removed