Seasonic M12D 750 W Power Supply Review

Power Distribution

In Figure 18, you can
see the power supply label containing all the power specs.

Figure 18: Power supply label.

This power supply has two virtual rails (which is unusual for a power supply from this power range), distributed like this:

• +12V1 (solid yellow wire): Main motherboard cable, one of the auxiliary video card power cables that come from inside the power supply, one of the auxiliary video card power cables from the modular cabling system, SATA power cable that comes from inside the power supply and the two first connectors for SATA/peripheral power cables from the modular cabling system.
• +12V2 (yellow with black stripe wire): ATX12V, EPS12V, one of the auxiliary video card power cables that come from inside the power supply, one of the auxiliary video card power cables from the modular cabling system, and two connectors for SATA/peripheral power cables from the modular cabling system (the ones next to the video card power connectors).

There is not much you can do with only two virtual rails and lots of cables. One suggestion we have for Seasonic is to label outside the power supply the rails each cable is connected to, this would certainly help advanced users.

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