Seasonic S12-430: Beyond the Super Tornado

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Opening up the S12-430, one is greeted with an impressively large pair of unique heatsinks. The longer of the two looks much like the ones in the Super Tornado, but the smaller one is denser, with a double row of fins. They resemble teeth on a coarse comb. It's a clever design to maximize cooling fin surface area in the reduced height available to components due to the 1" depth of the 12cm fan.

Heatsinks look large and effective. (Ignore the yellow wire, which we added for fan voltage monitoring)

A double set of teeth on this HS. As usual for Seasonic, the PCB layout is very clean and tidy

A Yate Loon 120mm fan is used, as in the last version of the Super Tornado.

It is the medium speed version.

For the record...

The cabling on this Seasonic is twisted, like one or two other PSUs we've reviewed recently. It's said to improve EMI performance.

All the peripheral cables are twisted for improved EMI.

There are a total of seven cable sets.

  • 18" cable for main 24-pin ATX connector. Adapter to 20-pin adds 3~4 inches.
  • 18" auxiliary 12V connector
  • 19" auxiliary 4x12V connector (for dual CPU boards)
  • 33 " cable with three 4-pin IDE drive connectors and one floppy drive power connector
  • 27" cable with two 4-pin IDE drive connectors and one floppy drive power connector
  • 25" cable with two SATA drive connectors
  • 21" cable with 3-pin PSU fan speed monitor connector for motherboard

Easy-off 4-pin connector.

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