LEPA G 500 W Power Supply Review

Power Distribution

In Figure 20, you can see the power supply label containing all the power specs.

Figure 20: Power supply label

According to the manufacturer, this unit has three +12 V rails, and we could confirm this by the presence of three shunts (current sensors, see Figure 21) and also by the presence of a monitoring integrated circuit that really supports three +12 V OCP channels. Click here for a better explanation.

Figure 21: Shunts

The three +12 V rails are distributed like this:

• +12V1: Main motherboard and ATX12V/EPS12V cables
• +12V2: Half of the two red connectors for video cards
• +12V3: The other half of the two red connectors for video cards, SATA and peripheral power connectors

This distribution is perfect, as it separates the CPU and the video cards, which are the main components connected to the +12 V output, in different rails. Also, since the half of the red connector is fed by a different rail, the two six/eight-pin video card connectors that come with this power supply are installed on separate rails.

Let’s now see if this power supply can really deliver 500 W.