Seventeam ST-650PWL 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, but this is a lie. Inside the unit all +12 V wires are connected to the same spot on the printed circuit board, plus this unit doesn’t have over current protection, which is required for building multi-rail power supplies (click here to understand). Therefore, this unit has a single-rail design.

Let’s now see if this power supply can really deliver 650 W.