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BitFenix Whisper M Series 850W PSU Review

The BitFenix Whisper M Series 850W power supply is finished in black paint with yellow stickers on the side panels highlighting the product name and branding. Its not the most attractively finished power supply but I wouldn't class it as ugly either. The power supply measures 150 mm (W) x 86 mm (H) x 160 mm (D) and weighs 1.6kg.

The large fan is hidden behind a grill with the Bitfenix logo taking pride of place in the center.

The modular panel is located on one side of the chassis. It is clearly labelled and won't cause any issues during the build phase.

The other side of the power supply is home to the honeycomb cooling vent, power connector and power switch.

Both side panels have ‘Whisper Series' stickers in place.

BitFenix Whisper M Series 850W Power Supply
DC Output
+3.3V
+5V
+12V MBPH +12V CPU +12V VGA1 +12V VGA2
-12V
+5Vsb
Max Output
22A
22A
25A 25A 40A 40A
0.5A
2.5A
Total Power 120W 850W 6W 12.5W
850W

There are four +12V rails and two them are rated lower, at 25A. The +12V rails that handle the six PCIe connector have the higher OCP trigger point.

The first +12V rail is designed to handle the 24 pin ATX cable and MOLEX/SATA connectors. The second +12V rail supports the first EPS connector. The remaining two +12V rails support all PCIE cables.

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