Cooler Master eXtreme Power Plus 400 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, according to the label this unit has two +12 V rails. Inside the unit we could clearly see two shunts (current sensors) and the monitoring integrated circuit used by this unit supports over current protection, so this unit really has two +12 V rails (click here to understand more about this subject). The two rails are divided like this:

• +12V1 (solid yellow wire): ATX12V/EPS12V connector.
• +12V2 (yellow with black stripe wire): All other connectors.

This is the typical distribution used on unit with two +12 V rails and it is good since it separates the CPU (ATX12V/EPS12V) from the video cards.

Now let’s see if this power supply can really deliver 400 W.