Floston Energetix ENFP-1050W (1050W)

I have tested Floston’s products before – that was the ENFP-750W model, and now I’ve got the senior model of the Energetix series with an output power of 1050W. Like the 750W unit, it comes in a neat trunk that can be later used for storing your tools, for example.

The ENFP-1050W has a black matte case like most other models of the same output power. It is longer than the standard ATX unit and is not actually meant for cramped system cases.

Most of its cables are detachable. Their connectors can be found on the rear panel: four for graphics cards and eight for other peripherals. It is impossible to plug a cable into a wrong connector.

The PSU follows the dual-transformer design that is often employed in today’s high-wattage models because a 1000W power transformer is either too large or demands much higher operating frequencies. The first thing would make it impossible to fit the transformer into the PSU considering that some 27 millimeters of space must be left above the electronics for a fan. The second thing would call for the use of different materials for magnetic paths, of expensive transistors, etc. Thus the use of two transformers, half the total output power each, is justifiable both technically and commercially.

Some manufacturers claim that this design ensures a more stable operation of the PSU, but generally it is not so. Single- and dual-transformer designs provide identical characteristics and the choice of the particular design is determined by engineering and technological reasons.

The PSU also features active PFC and dedicated voltage regulation. Both have become almost obligatory for PSUs of such a high wattage.

The card with the output connectors is placed near the rear panel of the case. It carries ceramic capacitors, which is good. Although their capacitance is low, they work normally at high frequencies, smoothing out the ripple at the PSU’s output effectively as opposed to electrolytic capacitors whose efficiency degenerates with the growth of the operating frequency.

The PSU has four +12V output lines: two of them have a max current of 20A as demanded by the EN-60950 safety standard but the other two have a max current of 36A. The reason behind that is clear: the EN-60950 standard is not obligatory while the more relaxed limitation gives the user more freedom in connecting the PSU to the consumers. The PSU can provide a total of 72A across all of its 12V lines. Note also the high allowable load of the standby 5V source: it is 6A, which is two times that of many other PSUs.

The PSU is equipped with the following cables and connectors:

• Mainboard cable with a 20+4-pin connector (49cm long)
• CPU cable with a 4+4-pin connector (50cm)
• CPU cable with an 8-pin connector (50cm)
• Four connectors for graphics card cables
• Eight connectors for peripherals

Included with the PSU are:

• Four graphics card cables with 6+2-pin connectors and additional filters (51cm long)

• Three cables with three Molex connectors and one floppy drive plug on each (50+15+15+15cm)
• Two cables with three SATA power connectors on each (50+15+15cm)

All of the cables are sleeved.