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Rectangular black ATX power supply unit with fully modular cable sockets and a 120mm fan grille

E-POWER

E-POWER TOP-1100W-PB 1100W ATX 80 Plus Silver Fully Modular Power Supply

SKU CH-Z6ND-3E1PR MPN TOP-1100W-PB

A fully modular 1100 W ATX power supply with 80 Plus Silver efficiency, active PFC, and a 120 mm double ball-bearing fan rated for 40 °C operation

  • Max wattage1100 W
  • Modular cablingFull Modular
  • Fan configuration1
  • Power factor correctionActive
  • Main power connector20+4Pin
  • SLI supportCertified
  • 80 PLUS Silver efficiency delivers up to 88% typical load performance
  • Fully modular cables eliminate clutter and improve airflow inside the case
  • 1100 W output supports multi-GPU SLI and CrossFire configurations
  • Japanese primary capacitors and six 12 V rails ensure stable current at 40 °C
  • Thermally controlled 120 mm double ball-bearing fan maintains quiet operation

Capacity and Certification

The E-POWER TOP-1100W-PB delivers 1100 W of continuous power and carries 80 PLUS SILVER certification. It meets ATX12V 2.3 and EPS 2.92 specifications for modern desktop platforms. The unit is designed to support multi-core CPUs and SLI or CrossFire graphics configurations. Full modular cabling lets builders connect only the leads they need.

Interface Practical Limits

Six +12 V rails distribute current for stable operation across heavy loads. Three 8-pin and three 6-pin PCIe connectors provide the maximum native GPU support this unit offers. Efficiency stays above 85 % from 20 % to 100 % load, peaking at 88 % at typical load. Active PFC maintains a power factor above .99 across the 115240 Vac input range. Builders needing more PCIe connectors than six must look elsewhere.

Build Quality and Daily Use

A thermally controlled 120 mm double ball-bearing fan manages cooling at up to 40 °C ambient. Japanese primary capacitors are used on the primary side for longevity. The fully modular design reduces cable clutter and improves case airflow. At 175 mm depth the unit fits standard ATX bays, though tight chassis should be measured first. Safety approvals include CE, CB, TUV, FCC, cUL, CCC and BSMI.

How it compares

Measured against everything we stock in ATX Desktop Power Supplies, at today’s prices. Recalculated every night.

Price $175.99
Pricier than about 58% of the 10,869 comparable items (median $142.99).
Max wattage 1100 W
Higher than about 85% of the 930 comparable items (median 850 W).

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Specifications

Product
Brand nameTopower
Product linePOWERBIRD
Model nameTOP-1100 W-PB
Product typeATX12 V / EPS12 V
Graphics
SLI supportCertified
CrossFire supportReady
Power
Max wattage1100 W
Modular cablingFull Modular
Power factor correctionActive
Main power connector20+4Pin
Efficiency certification80 PLUS SILVER Certified
Size & build
Product dimensions150 mm × 86 mm × 175 mm
Shipping weight6.80 kg
Package size25 × 25 × 25 mm
Compatibility
PSU length limit175 mm
More details
Fan configuration1

Questions about this item

How do I decide between the available versions or capacities of the TOP-1100W-PB?

The TOP-1100W-PB is offered as a single 1100 W unit in the POWERBIRD series, so there is no version or capacity choice to make.

What does the 1100 W rating mean once the PSU is installed in a system?

It guarantees delivery of the full 1100 W at up to 40 °C operating temperature, with efficiency above 85 % from 20 % to 100 % load and peak efficiency of 88 % at typical load.

What does the ATX12V 2.3 and EPS 2.92 compliance cap in practice?

Compliance with ATX12V 2.3 and EPS 2.92 ensures the 20+4 pin main connector and the six 12 V rails meet current desktop and workstation power-distribution requirements.

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