Guide on using the powersupply on x58 classified motherboard

It's not clear what you're asking.

Do you want to rewire the Power supply to create a motherboard connector out of two other connectors? What two 8 pin connectors do you have? Usually, the only 8 pin connector is designed for the CPU.

Why can't you use the existing 20+4 connector?

OK, I think I understand.

On newer motherboards, the 8 pin connector is designed to give the CPU a separate power source, without being routed thru the main connections. This ensures a good clean flow of power directly to the CPU - regardless of whether it is being overclocked or not. You must have this 8 pin, or sometimes it uses a 4 pin, to make the system work

So the 20+4 connector is designed to power everything on the motherboard, except the CPU. And the CPU has the 8-pin connector just for itself. Some power supplies have a 4 pin connector for the CPU - this works fine also.

In addition, you'll often see one or more 6 pin connectors designed to run directly to the top of the more powerful video/graphics cards. Again, this makes sure the power-hungry card gets all the power it wants.

The 20+4 connector is also a newer design, to give more power to the board than the older 20 pin connector. It is often in 2 pieces, 20 pin and a 4 pin that attaches to it, so that a newer power supply can still be used with older motherboards that only need the 20 pin connector.

If your power supply does NOT have a 8 or 4 pin connector designed to fit into the special holder near the CPU, you cannot use the power supply on a newer board. Without the extra CPU connector, the motherboard will not work.