Articles: Cases/PSU
 

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InWin IP-AD160-2 Power Supply

Although InWin’s system case resembles the above-discussed Foxconn in its component layout and capabilities, its power supply is only half the Foxconn’s size and wattage.

It looks most unusual like a long brick with a nearly square section. A cord with a 220V connector sticks out of its butt-end. There is no room for a socket here. It would take most of the panel, leaving no place for vents.

The component density is expectedly high as it is hard to fit a modern power supply, even though a 160W one, into such a small system case, especially as, like the other power supplies in this review except for the Codegen 200XA, the IP-AD160-2 is equipped with active PFC.

The high component density has the obvious downside of poor ventilation. The roomier Cooler Master has a same-size fan and proved to be loud, so what can we expect from the cramped InWin? On the other hand, the InWin power supply has larger heatsinks, so its fan may cope with its job without speeding up much. We’ll check this out shortly.

Having a full output power of 160 watts, the power supply can yield 120W via its +12V power rail. The combined load on the +5V and +3.3V rails is rather low at less than 50 watts.

The PSU has the following cables and connectors:

  • Mainboard cable with a 20+4-pin connector (25cm)
  • CPU cable with a 4-pin connector (30cm)
  • One cable with two SATA and one PATA power plug (13+5+20cm)

This suits our configuration perfectly. As you can see, the voltages are stable. The +12V voltage goes beyond the permissible limits when most of the load is on the +5V and +3.3V rails, which cannot occur in a modern computer.

The output voltage ripple at maximum load is within the acceptable limits. The oscillograms are smooth, without spikes or anything.

The PSU’s efficiency is over 84%, which is very high. Moreover, this power supply is the only one in this test session to deliver an efficiency of 80% even at a load of 50W (this is typical power consumption of a mini-ITX computer; it even may be high for some configurations).

A 40x40x10mm fan from ARX is installed on the PSU. It is secured with exceptionally large screws.

As opposed to the power supply from the Cooler Master case, the fan starts out at a very low speed of 1200rpm. The speed grows up along with the load, reaching 3600rpm at the maximum. To remind you, the Cooler Master’s fan speed was over 4600rpm at the minimum. Besides, the fan of the InWin case does not produce any whistle. Its noise is just the hiss of airflow.

As a result, the IP-AD160-2 is a very quiet power supply that is suitable for both office and home use without any modifications.

The standby source is rated for a current up to 1.5A and copes with its job well.

Summary

To our surprise, the InWin power supply proves to be one of the quietest in this review notwithstanding its 40mm fan. It may be due to high efficiency or well-ribbed heatsinks or something else, but it is a fact. Besides, this power supply has good electrical parameters. You shouldn’t have any problems using it.

 
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