In Figure 19, you can see the power supply label containing all the power specs.

click to enlarge
Figure 19: Power supply label.

As you can see, according to the label this unit has three +12 V rails. These rails are distributed like this:

• +12V1: Main motherboard cable, ATX12V and EPS12V connectors.
• +12V2: The two peripheral connectors from the modular cabling system that are close to the video card power connectors and two of the video card power connectors.
• +12V2: The first three peripheral connectors from the modular cabling system and two of the video card power connectors.

This distribution is perfect, as keep the CPU (through the ATX12V/EPS12V connectors) and the video cards in separated rails.

One interesting thing: each red connector from the modular cabling system, which is used to connect the video card power cable, is half connected to the +12V2 rail and half connected to the +12V3 rail. Since each cable has two connectors, this means that each connector from the same cable is connected to separated rails. Thus when using two video cards that require only one power connector each, the best deal is to use only one cable, this way you are ensuring that one of the video cards is installed on +12V2 and the other one is installed on +12V3. If you use the two cables you may end up connecting the two video cards to the same rail.

Now let’s see if this power supply can really deliver 700 W.