Articles: Cases/PSU

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A.C. Ryan Ryanpower2 ACR-PS2094 (450W)

The power supply from A.C. Ryan has a dark – but not exactly black – steel case. The gloss on the surface is due to a layer of scratch-sensitive lacquer, so you should be careful during the installation if you want to preserve the original appearance of the PSU. This unit is equipped with two fans: an 80mm fan on the rear panel and a 90mm fan on the bottom panel. Somewhat against the current fashion, there’s no highlighting of the fans.

The manufacturer positions this PSU as “the open platform for PSU customization and modding” but doesn’t explicitly say where this openness shows up. The PSU differs from the competitor products only in giving you the opportunity of detaching and replacing all the power cables which are plugged into the appropriate connectors on the PSU’s rear panel:

The four rightmost connectors will feed juice to your hard, optical and floppy drives. The two small 3-pin connectors in the top left corner are going to give power to additional fans (it’s always +12V on these connectors, so the fans will work at their full speed unless you use some third-party speed regulator). The remaining two connectors are for cables with a mainboard connector and a 4-pin ATX12V connector. For some reason there are no +3.3V connectors for SATA drives here – the four available connectors offer only +5V and +12V. Yes, there are no +3.3V drives as yet, but there’s no doubt they will appear sooner or later.

Otherwise there’s nothing extraordinary in the design of this PSU, so I have to come to the conclusion that this “open platform” should only be considered different because it permits to use cables of any color. Yes, A.C. Ryan offers kits consisting of fan grids, screws and other accessories of various colors, but you can easily install them into any other PSU because they are perfectly standard.

The internal design of the PSU bears a strong resemblance to the Antec TruePower unit I discussed in my previous roundup (for details see our article called Powerful Power Supply Units Roundup), save for another design of the active PFC unit (here, it is placed on a vertical card near the right wall of the case). In any other respect this PSU is identical to the Antec, including the independent magamp-based regulation of all the output voltages.

Besides that, there is now a card with the above-mentioned output connectors. It is a piece of handicraft in the bad sense of the word – the card was evidently soldered manually and not very neatly.

Thus PSU comes with a basic selection of cables:

  • Two cables with three Molex connectors on each (27+12+12cm length, that is 27 centimeters from the PSU to the first connector, then 12cm more to each of the next connectors);
  • One cable with three power connectors for SATA drives (28cm+10cm+10cm);
  • One cable with three Molex connectors and one mini-plug for the floppy drive (28+9+9+13cm);
  • One cable with four 3-pin fan connectors (28+15+15+15cm);
  • A 50cm ATX12V cable;
  • A 50cm ATX cable with a 24-pin plug for the PSU and a 20-pin plug for the mainboard
  • An adapter from two Molex connectors to a single 6-pin additional power connector of the graphics card.

Take note that the PSU doesn’t have a separate power connector for the graphics card, just like it doesn’t have 3-volt connectors for SATA drives, and you have to use the adapter if your graphics card has a 6-pin power connector. Then, the enclosed power cable supports mainboards with a 20-pin connector, while modern PCI Express mainboards have a 24-pin connector (and the PSU itself has a 24-pin connector). So, if you’re going to use a power-hungry graphics card without an additional power connector (such devices are already selling), it would be wise to purchase another cable from A.C. Ryan – the one with 24-pin plugs on both of its ends. If your card consumes little power or is equipped with its own power connector, you can use the cable you find enclosed with the PSU – it is compatible with the connector on new mainboards both mechanically and electrically, but four contacts in the mainboard’s connector are going to remain open with it.

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