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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

  • TypeATX
  • Single/RedundantSingle
  • Maximum Power1200W
  • Fans2
  • Main Connector20+4Pin
  • Output Current+3.3V@18A, +5V@18A,+12V@100A, [email protected] , [email pro
  • 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.

Highlights

  • 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

Specifications

BrandAthena Power
Series3U
ModelAP-3UMK12P868
TypeATX
Single/RedundantSingle
Maximum Power1200W
Fans2
Main Connector20+4Pin
Output Current+3.3V@18A, +5V@18A,+12V@100A, [email protected] , [email protected]
Output+3.3V, +5V,12V, -12V, +5Vsb
Input Voltage100 - 240 V
Input Frequency Range47 - 63 Hz
Input Current13A@110V, 6A@ 240V
MTBF100,000 Hours on Maximum Load at +25 degree C
Efficiency> =92%
Hold-up Time17 ms Minimum at Nominal Input Voltage
ProtectionOCP, OVP,
FeaturesRise time: Less than 20 ms
Dimensions(D x W x H) 200 x 115.5 x 86.4 mm / 7.87 x 4.55 x 3.4 in
Weight5.0 lbs
Humidity20%-90%
TemperatureOperating: 0°C ~ +50°C on Full Load; Storage & Shipping: -20°C ~ +80°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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