In-Win IP-P410Q3-2 and IP-P460Q3-2

Finally we’ve come across two In-Win power supplies that are ATX12V 2.2 compliant!

Both models come to market in boxed versions. Although they are described as OEM versions on the In-Win website, I haven’t yet seen system cases selling with such PSUs. Two models with the Q index, a 300W and a 400W one, are declared to support BTX system cases, which are yet very rare and exotic. Among ATX system cases from In-Win there can be found only one high-wattage power supply. It is the above-described IW-P430J2-0 that cannot provoke much enthusiasm.

The PSUs have traditional gray-colored cases although the In-Win website shows a photograph of a dark-gray case with blue fan highlighting. Note the words “Full Range” on the PSU. This implies active PFC.

There is indeed a PFC device here. You can see its choke on the left, next to the two barrels of high-voltage capacitors. The PFC controller is based on an Infineon ICE1PCS02 chip located under that choke.

The circuit design is otherwise similar to the AJ series models described earlier in this review. The standby source is based on an ICE2A0565Z chip; the main regulator on an UC3845B chip (it is placed on a small separate card). The supervisor is based on a Weltrend WT7525 (on a separate card, too). The heatsinks have become intricately shaped and larger.

The PSUs both have an identical set of cables and connectors:

• Mainboard cable with a 24-pin connector (42cm long)
• CPU cable with a 4-pin connector (45cm long)
• Graphics card cable with a 6-pin connector (46cm)
• Cable with two Molex connectors and one floppy mini-plug on each (26cm from the PSU case to the first plug and 15cm more to each next plug)
• Cable with three Molex connectors (45cm+15cm+15cm)
• Cable with two SATA power connectors and one Molex connector (44cm+15cm+15cm)

Each of the PSUs offers two +12V output circuits with a max combined current of 23.3A (the junior model) and 26.7A (the senior model). This is higher than 18A offered by older ATX12V 1.3 power supplies, but the ATX12V 2.2 standard demands even more. According to it, typical 400W and 450W power supplies must have a +12V power rail with a load capacity of 27A and 30A, respectively. In other words, these In-Win PSUs still lag one step behind the requirements of the ATX standard.