So far Zalman has only two models on their ST power supply series, 500 W and 600 W. Let’s see if the 600 W model is a good product.

click to enlarge
Figure 1: Zalman ZM600-ST power supply.

click to enlarge
Figure 2: Zalman ZM600-ST power supply.

Zalman ZM600-ST is 5 ½” (140 mm) deep, using a 120 mm fan on its bottom and featuring active PFC circuit, of course.

This unit does not have a modular cabling system. All cables have nylon protections, which come from inside the unit. All cables use 18 AWG wires, which is the correct gauge to be used. The cables included are:

• Main motherboard cable with a 20/24-pin connector, 22” (56 cm) long.
• One cable with two ATX12V connectors that together form an EPS12V connector, 21 5/8” (55 cm) long.
• One cable with one six-pin connector and one six/eight-pin connector for video cards, 19 ¾” (50 cm) to the first connector, 5 7/8” (15 cm) between connectors.
• Two cables with three SATA power connectors each, 20 7/8” (53 cm) to the first connector, 5 7/8” (15 cm) between connectors.
• One cable with three standard peripheral power connectors, 20 ½” (52 cm) to the first connector, 5 7/8” (15 cm) between connectors.
• One cable with three standard peripheral power connectors and one floppy disk drive power connector, 20 ½” (52 cm) to the first connector, 5 7/8” (15 cm) between connectors.

The length of the cables and the number of SATA connectors is satisfactory for a 600 W power supply, but we didn’t like that the two video card power connectors are installed on the same cable. It is always better to see them attached to individual cables.

click to enlarge
Figure 3: Cables.

Now let’s take an in-depth look inside this power supply.