A Detailed Look

The BitFenix Formula God 750W power supply enclosure is painted matte black and measures 140mm (5.5”) long. The back panel includes an AC receptacle and main power On-Off switch.

The 750 watt power supply incorporates BitFenix’s Intelligent Fan Control, which allows for quiet operation throughout the power range.

The power supply uses a 120mm, nine blade fan on the bottom for cooling.  The Martech fan (DF1202512SEMN) is rated for 0.37A at 12 VDC and uses Fluid Dynamic Bearing (FDB). The only other time we have encountered a Martech fan was in the Whisper M 850W power supply so we still don’t know much about them.

The front panel on the Formula Gold power supply uses a plastic bushing to protect the fixed cables.

The Formula Gold 750W power supply comes with a good assortment of fixed cables. (See table in specification section for connector count and cable lengths.) However we have two minor complaints with the cables. First the two 4+4 pin CPU connectors are daisy-chained onto one cable and the other is the added bulk of the 24-pin ATX connector due to a trio of small filter capacitors under the sleeving.

Under the Hood

Here are a few pictures showing the layout and components inside the BitFenix Formula Gold 750W power supply.  BitFenix is using Channel Well Technologies as their partner and OEM for the Formula Gold series.

The power supply uses an LLC resonant topology to lower power losses and boost efficiency during switching. The power supply uses DC-to-DC converters for increased efficiency to generate the +3.3V and +5V outputs from the +12V supply.

The layout of components is clean while the soldering appears to be good. All of the capacitors used inside the PSU are Japanese made. For example, the single primary bulk capacitor is made by Nippon Chemi-con and rated for 680uF, 400V and 105°C.

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