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Antec Neo ECO 620C

As opposed to the other tested products, this one was taken out of an Antec Sonata IV system case, but the manufacturer’s website says it can be purchased separately. Antec positions its Sonata series as silent solutions, so I am curious as to how the bundled PSU complies with that positioning.

Exterior Design

There is nothing special about the exterior of this PSU.

It’s got a matte steel-gray case with the manufacturer’s logo stamped on its side. The cables are all fixed and sleeved. The black cooling fan is covered with a black grille.

Everything is standard here except for the color of the case (as a matter of fact, bundled PSUs don’t usually get painted at all; this exception must be due to the model's availability as a standalone retail product).

The back panel of the case is meshed and has a mains connector and an On/Off switch. The other panels are blank (except for the one with a fan).

Circuit Design

The interior of the Antec Neo ECO 620C resembles Seasonic’s M12-II and S12-II Bronze models with its beige-colored PCB, characteristically shaped aluminum heatsinks and identical component layout.

Judging by the non-modular design and specs, the Neo ECO 620C is based on Seasonic’s 620W S12 series model.

Compared to the more expensive M12-II series, the S12-II (and the Neo ECO 620C, too) lacks detachable cables and has a shorter case.

Well, we can find certain differences here. Seasonic employed United Chemi-Con's KZE series capacitors in its products whereas the Neo ECO 620C mostly has Teapo capacitors (there is also one Su’scon and one large Nippon Chemi-Con capacitor at the output).

Like a regular midrange PSU without any pretense, the Neo ECO 620C has active PFC and lacks dedicated voltage regulation.

Cables and Connectors

The Antec Neo ECO 620C is equipped with the following cables and connectors:

  • One mainboard cable with a 20+4-pin connector (55 cm)
  • One mainboard cable with a 4+4-pin connector (63 cm)
  • One graphics card cable with one 6+2-pin and one 6-pin connector (55+13 cm)
  • One cable with three PATA power connectors and one floppy-drive plug (53+15+15+15 cm)
  • One cable with three PATA power connectors (53+15+15 cm)
  • Two cables with three SATA power connectors on each (53+15+15 cm)

The cables are somewhat longer that those of the original Seasonic. The extra length of the mainboard's 4+4-pin cable is going to be appreciated by owners of large system cases with a bottom PSU bay.

Specifications

The Antec Neo ECO 620C has the same specs as the Seasonic S12-II Bronze with a wattage rating of 620 watts. And they are quite up to today’s requirements, too. The PSU can give you 576 out of its full 620 watts across the +12V rail.

The difference boils down to the lack of 80+Bronze certification (the basic 80+ certificate the PSU sports is formally useless for 220V mains).

UPS Compatibility

Like its Seasonic progenitors, the Antec Neo ECO 620C refused to be compatible with my UPS. They were stable at loads up to 370 watts when powered by the mains but couldn’t work even at 280 watts on the UPS batteries.

 
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