Tuniq Potency 750 W Power Supply Review

Power Distribution

In Figure 15, you can see the power supply label containing all the power specs.

Figure 15: Power supply label.

As you can see, the label lists four +12 V rails. Inside the power supply the unit really has four rails, as we could clearly see four shunts (current sensors), plus the monitoring circuit implements four over current protection channels, which is key to have separated rails (click here to learn more about this subject).

The rails are distributed like this:

• +12V1 (solid yellow wires): Main motherboard cable.
• +12V2 (yellow with red stripe wires): One of the video card power cables.
• +12V3 (yellow with green stripe wires): The other video card power cable, one of the SATA power cables and one of the peripheral power cables.
• +12V4 (yellow with black stripe wires): EPS12V/ATX12V connectors, one of the SATA power cables and one of the peripheral power cables.

This distribution is good because it separates the CPU (EPS12V/ATX12V) from the video cards, however the way the peripheral and SATA power cables were connected is a little bit unusual; most manufacturers would have attached them all on the same rail as the main motherboard cable.

Now let’s see if this power supply can really deliver 750 W.