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Rectangular metal server PSU with single 80mm fan and power connectors

Athena Power

Athena Power HG2-6400P 400W server power supply

SKU CH-6ZS8-H20JF MPN HG2-6400P

A 400W single server power supply with an 80mm fan, active PFC and full-range 90-264V input for servers and workstations

  • Max wattage400 W
  • Power supply redundancySingle
  • Output current+5 V@35A, +12 V@30A, +3.3 V@25A
  • Supply voltage90–264 V
  • Fan configurationOne 80 mm DC Fan
  • Humidity rangeOPERATING: 20%-95%
  • 400W maximum power supports server and workstation loads
  • Active PFC across 90 - 264 V input ensures stable operation
  • Single 80mm DC fan provides cooling for continuous use
  • Combined 5V and 3.3V output limited to 45A protects components
  • Compact 5.51" x 5.91" x 3.39" form factor fits standard chassis

Server power supply for workstation

The Athena Power HG2-6400P is a 400W single unit built for servers, workstations, storage systems and industrial PCs. It supports ATX 2.03, ATX12V, EPS12V, WTX and AMD-GES standards. Buyers who need redundant power or higher wattage for dense multi-GPU configurations should look elsewhere.

Practical limits of the supported ATX

The supply delivers up to 30A on the +12V rail and 35A on +5V, with combined 5V and 3.3V current capped at 45A. Active PFC operates across a 90 to 264V input range. Systems demanding more than 400W total or greater 12V capacity than 30A will exceed this unit's rating.

Build quality, connectors and daily implications

An 80mm DC fan handles cooling while noise and thermal control features aim for reliable operation. The chassis measures 5.51" x 5.91" x 3.39" and fits standard server bays. Operating limits are -10°C to 40°C at 20% to 95% humidity. First listed in 2011, the design suits legacy and current compatible platforms alike.

How it compares

Measured against everything we stock in Server & Hot-Plug PSUs, at today’s prices. Recalculated every night.

Price $242.99
Pricier than about 78% of the 3,798 comparable items (median $131.99).
Max wattage 400 W
Lower than about 70% of the 235 comparable items (median 668 W).

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Specifications

Product
Brand nameAthena Power
Product lineZippy
Model nameHG2-6400P
Product typeATX 2.03, ATX12 V(P4), EPS12 V, WTX, AMD-GES
Power
Max wattage400 W
Power supply redundancySingle
Output current+5 V@35A, +12 V@30A, +3.3 V@25A
Supply voltage90–264 V
Size & build
Product dimensions5.51 in × 5.91 in × 3.39 in
Shipping weight2.52 kg
Package size253 × 208 × 105 mm
Environment & compliance
Humidity rangeOPERATING: 20%-95%
Temperature range-10 °C - 40 °C
More details
Fan configurationOne 80 mm DC Fan

Questions about this item

Which single 400W unit fits a server build needing ATX 2.03, EPS12V and WTX support?

The HG2-6400P is a single 400W supply that meets ATX 2.03, ATX12V(P4), EPS12V, WTX and AMD-GES specifications.

What does the 400W rating mean for combined +5V and +3.3V loads in a real system?

The +5V and +3.3V rails together must not exceed 45A, so their combined draw limits how much of the 400W total is available for those voltages.

What does the full-range active PFC with 90-264V input cap in practice?

Active PFC corrects power factor across the full 90-264V range, letting the supply operate worldwide without a voltage switch.

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