Fractal Design Integra R2 750 W Power Supply Review

Power Distribution

In Figure 21, you can see the power supply label containing all the power specs.

Figure 21: Power supply label

This power supply is sold as having two +12 V rails, which is correct, since this unit has two +12 V over current protection channels. Click here to understand more about this subject.    

The two +12 V rails are distributed as follows:

• +12V1 (solid yellow wire): Main motherboard cable, the SATA and peripheral connectors, and one of the video card power cables
• +12V2 (yellow/blue wires): The ATX12V/EPS12V cable and one of the video card power cables

When using only one video card, it is important to use the video card power cable that has solid yellow wires. Otherwise, you will have your video card installed on the same rail as your CPU, which may trigger the power supply’s over current protection.

How much power can this unit really deliver? Let’s find out.