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Corsair TX850 850W Power Supply Review

Manufacturer: Corsair Components
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A Detailed Look

The Corsair TX850W power supply claims to support the latest ATX12V v2.2 and EPS12V 2.91 standards and is rated for a combined, continuous output power of up to 850 watts at 50°C operating temperature.  That’s important as some less reputable manufactures 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.


The TX850W PSU provides a dedicated, single +12V output that is rated for up to 70A/840W, which is almost the full capacity of this unit.  This is a trend we are seeing in many new power supplies, which eliminates several potential problems that can occur with multiple +12V outputs.  Delivering a single +12V output is a better approach IMHO.


Specifications (courtesy of Corsair Memory)



The Corsair TX850W power supply enclosure is painted matte black with a yellow logo and is 160mm (6.3”) deep.  It uses a single 140mm fan on the bottom for cooling, which is the largest standard fan size that will fit into the ATX form factor enclosure.  The fan speed is automatically controlled by the internal component temperature (speeds up as the combined load and temperature increases).  The dual ball bearing Yate Loon Electronics fan (D14BH-12) is rated for up to 140.0 CFM at 2,800 rpm and 48.5 dBA at 12V.  This is a relatively powerful fan and should provide excellent airflow but may get a bit noisy at higher speeds.


A clear plastic baffle plate is attached to the top side of the fan, which forces airflow to the front of the power supply where it then flows across all the internal components before exiting out the back for better cooling.

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