Contents
- 1Introduction
- 1.1Packaging and accesories
- 2Connectors & cabling
- 2.1Casing & cooling
- 3Input filtering
- 4Primary side
- 4.1+5 V stand-by rail
- 5Secondary side
- 5.1Build quality
- 6Load testing
- 6.1Loading +5 V SB
- 6.2Combined loading
- 6.3Combined loading ripple
- 6.4Crossloading, overloading
- 6.5Crossloading, overloading ripple
- 7Conclusion and evaluation
- 7.1Thanks
Connectors & cabling
Seasonic uses 18AWG wires for all connectors, except for a few thinner ones for sensing (which is present for +3.3 V as well as +5 V and +12 V), −12 V and Power On/Power Good. I think I will tolerate this despite my high-end requirement for all wires to be 18AWG as there is almost no current flowing through these. But thicker wires for ATX 12 V or PCI Express cables stands, and these are 18AWG too, that’s gonna be some points loss. These are at least gold-plated, that is good. All cables but Main ATX are welded together to form flat ribbons, Main ATX is sleeved.
In particular, we have:
- Main ATX (20+4pin): 54 cm
- 1× ATX 12 V (4+4pin): 58 cm
- 2× PCIe (6+2pin): 62 and 70 cm
- 8× SATA: 41 cm, 51 cm, 52 cm, 2× 61 cm, 2× 71 cm, and 82 cm
- 3× Peripheral molex: 52 cm, 62 cm and 72 cm
- 1× Berg for FDD: 82 cm
Casing & cooling
The casing is made from 0.9mm SECC steel with matt (possibly powdered) black lacquering. Fan grill is made directly by cutting hexagonal holes in the upper part of the metal cover. The backside for exhaust air is made with smaller hexagonal holes. Seasonic uses metal bending instead of bushing for output cables, the hole is not sharp at all, so this is good technique to save a few cents you may use elsewhere on the product without harming anything.
The fan itself is Jamicon which Seasonic started using quite recently. Before that, Adda fans have been used for a very long time. This model is KF1225B1HR-R with dual ball bearings for MTBF of 75000 hours. It runs at 2200 maximum RPM while achieving airflow of 81.17 CFM with noise level of 38 dBA.
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