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BFG Tech ES-800 Power Supply Review - Frequency Conversion

Manufacturer: BFG Tech
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Specifications

The BFG Tech ES-800 power supply is rated for a combined, continuous output power of up to 800 watts at 40°C operating temperature (internal case air temperature).  That’s important as some less reputable manufacturers limit their power supply’s advertised capacity by specifying a lower operating temperature (25°C) in the fine print.  The PSU includes universal AC line input (automatically adjusts the AC line voltage) and active PFC, which makes the unit more environmentally friendly to the local power grid. 


BFG has elected to use four +12V rails instead of delivering a single, large +12V output as many newer power supply manufacturers are electing to do.  This is accomplished by implementing current limiting circuits into the design to conform to the 240 VA maximum guidelines – no single output should exceed 240 VA (12V x 20A = 240 VA).  In addition, the two +12V outputs (+12V3, and +12V4) that provide power to the PCI-E graphics connectors are rated at 36A each to prevent potential power distribution problems from occurring when using multiple high-end video cards.


The following tables list the ES-800 PSU specs from the BFG Tech website.


Note: The BFG ES-800 can deliver up to 65A/780W of +12V DC power and requires zero load on the +3.3V and +5V rails.

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