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Switching Power Supplies A - Z, Second Edition
Switching Power Supplies A - Z, Second Edition, by Sanjaya Maniktala (Newnes), starting at $57.07
Home » Power
Seventeam ST-620PAF Power Supply Review
Author: Gabriel Torres
Type: Reviews Last Updated: July 20, 2009
Page: 1 of 10
Introduction
Hardware Secrets Silver Award

You need to pay close attention because Seventeam has two power supply series with practically the same name but using different projects: PAF and P-AF. PAF series has models with 450 W, 520 W, 580 W and 620 W capacities, while P-AF series has models with 550 W, 650 W, 750 W and 850 W capacities. As you can see these two series don’t have models with the same capacity, so it is easy to see if a particular model is from the PAF or from the P-AF series. Can ST-620PAF really deliver 620 W? Let’s see.

Seventeam ST-620PAF power supply
click to enlarge
Figure 1: Seventeam ST-620PAF power supply.

Seventeam ST-620PAF power supply
click to enlarge
Figure 2: Seventeam ST-620PAF power supply.

ST-620PAF doesn’t have a modular cabling system. It has a 120 mm fan on its bottom and active PFC circuit, of course.

It is a very small unit, being only 5 ½” (140 mm) deep. All cables have a nylon protection that comes from inside the power supply. The included cables are:

  • Main motherboard cable with a 20/24-pin connector.
  • One cable with one ATX12V and one EPS12V connector.
  • Two auxiliary power cables for video cards with one six-pin connector each.
  • Two SATA power cables with two SATA power connectors each.
  • One peripheral power cable with two standard peripheral power connectors and one floppy disk drive power connector.
  • One cable with two peripheral power connectors.

The number of cables is enough for you to build a mainstream PC, but it would be great if Seventeam had added more SATA power connectors.

All wires are 18 AWG, which is the correct gauge to be used. All cables measure 19 11/16” (50 cm) between the power supply and the first connector on the cable and 6” (15 cm) between each connector on the cable on cables that have more than one connector.

Seventeam ST-620PAF power supply
click to enlarge
Figure 3: Cables.

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

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