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Silver rectangular 3U server PSU with dual fans, mesh grille and rear IEC socket

Athena Power

Athena Power AP-3UMK12P868 1200W 3U server power supply

SKU CH-ZYB2-ND3EJ

1200W 3U server PSU with 80 PLUS Platinum efficiency, ATX 3.1 and PCIe 5.0 support, 12V-2x6 GPU connector and dual smart fans

  • Max wattage1200 W
  • Power efficiency> =92%
  • Power supply redundancySingle
  • Fan configuration2
  • Main power connector20+4Pin
  • Output current+3.3 V@18A, +5 V@18A,+12 V@100A
  • 1200W continuous output powers demanding servers and workstations
  • 80 PLUS Platinum certification delivers up to 92% efficiency at typical loads
  • ATX 3.1 and PCIe 5.0 compliance ensures next-generation hardware support
  • 12V-2x6 H++ connector supplies 600W to modern GPUs
  • Dual smart fans with thermal speed control balance airflow and noise

1200W 3U Server Power Supply

The Athena Power AP-3UMK12P868 delivers 1200W continuous output in a 3U form factor for rack servers and workstations. It meets ATX 3.1 and PCIe 5.0 standards and includes a 12V-2x6 connector rated for 600W. Dual smart fans adjust speed based on thermal load.

Suits high-density servers needing Platinum

This unit fits builders who require 80 PLUS Platinum efficiency at 92 percent and universal 100-240V input for global deployment. It is not for systems that need redundant hot-swap modules or configurations demanding more than one 12V-2x6 connector. Buyers needing additional EPS or PCIe cables beyond the listed complement should look elsewhere.

Straightforward 3U rack installation

The supply mounts in a standard 3U bay using the 200mm depth and 115.5mm width. All connectors are native: 24-pin ATX, EPS 8-pin plus 4+4, two PCIe 6+2, eight SATA and two Molex. Common issues include cable routing in shallow chassis and verifying that the single 12V-2x6 port satisfies every GPU in the build.

How it compares

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

Price $335.99
Pricier than about 86% of the 3,798 comparable items (median $131.99).
Max wattage 1200 W
Higher than about 80% of the 235 comparable items (median 668 W).

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Specifications

Product
Brand nameAthena Power
Product line3U
Model nameAP-3UMK12P868
Product typeATX
Ports & slots
Output type+3.3 V, +5 V,12 V, -12 V, +5Vsb
Power
Max wattage1200 W
Power efficiency> =92%
Power supply redundancySingle
Main power connector20+4Pin
Output current+3.3 V@18A, +5 V@18A,+12 V@100A
Supply voltage100–240 V
AC input frequency47–63 Hz
Rated input current13A@110 V, 6A@ 240 V
Power hold-up time17 ms Minimum at Nominal Input Voltage
Built-in protectionOCP, OVP,
Size & build
Product dimensions(D × W × H) 200 × 115.5 × 86.4 mm / 7.87 × 4.55 × 3.4 in
Product weight5.0 lb (2.27 kg)
Environment & compliance
Humidity range20%-90%
Temperature rangeOperating: 0 °C to 50 °C on Full Load; Storage & Shipping: -20 °C to 80 °C
More details
Fan configuration2
Mean time between failures100,000 h on Maximum Load at +25 degree C

Questions about this item

What motherboard power connector does the AP-3UMK12P868 require to start?

The unit provides a single ATX 24-pin (20+4) connector that plugs directly into the motherboard main power socket.

Can I keep my existing EPS 8-pin CPU cables when installing this PSU?

Yes, the PSU includes one fixed EPS 8-pin and one 8-pin (4+4) cable so current CPU power leads can be reused.

How do I confirm the dual smart fans are responding to load after power-on?

Listen for the two fans to spin up briefly at start-up, then vary speed as component temperatures change during operation.

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