We take cryptocurrency — so the coins you hold can buy real hardware.Pay in crypto, spend it on real hardware. Free insured shipping worldwide over $399. Plain, unbranded boxes, sent from Germany.Free insured shipping over $399. Your rate is locked for 30 minutes once checkout opens.Rate locked 30 minutes. Every item sealed, serial-checked and covered by a 24-month warranty.Sealed, 24-month warranty.

Saved items Sign in
Supermicro 1U redundant server power supply unit with metal casing and handle

Supermicro

Supermicro PWS-1K81P-1R 1U 1800W 80 Plus Platinum redundant server power supply

SKU CH-QD0A-NBGR7

A 1U redundant 1800 W server power supply with 80 Plus Platinum efficiency, hot-swap capability and 200 to 240 V input at 50/60 Hz

  • Max wattage1800 W
  • Form factor1U
  • Power efficiency> 90%
  • Power supply redundancyRedundant
  • Supply voltage200–240 V
  • AC input frequency50/60 Hz
  • 80 Plus Platinum efficiency cuts energy waste
  • 1800W output powers dense multi-GPU servers
  • Hot-swap redundant design keeps systems running during module failure
  • 1U form factor fits standard rack shelves
  • 200-240 V input suits global data-centre feeds

Redundant 1U 1800W server power supply

This Supermicro PWS-1K81P-1R is a hot-swap redundant power supply in a 1U form factor. It delivers up to 1800 W of power with 80 Plus Platinum efficiency rated above 90 per cent. The unit accepts 200 to 240 V input at 50 or 60 Hz and is built for mission-critical enterprise servers.

Suited for high-density redundant deployments

It suits data-centre racks that need N+1 redundancy in a single rack unit. Operators who must maintain uptime during module replacement benefit from the hot-swap design. It is not intended for systems that require 200 to 240 V input but cannot accommodate a redundant chassis, nor for environments limited to lower input voltage ranges.

80 Plus Platinum efficiency above 90 per cent

The single specification that decides fit is the certified efficiency exceeding 90 per cent at typical loads. This rating reduces waste heat and operating cost in dense 1U installations. Buyers whose infrastructure cannot meet the 200 to 240 V requirement must select a different power solution.

How it compares

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

Price $50.99
Cheaper than about 86% of the 3,798 comparable items (median $131.99).
Max wattage 1800 W
Higher than about 90% of the 235 comparable items (median 668 W).

New to this? Buying PC parts with Monero — what to check, what it costs to pay, and what is never asked for.

Specifications

Product
Brand nameSuperMicro
Part numberPWS-1K81P-1R
Product typePower Supplies
Power
Max wattage1800 W
Power efficiency> 90%
Power supply redundancyRedundant
Supply voltage200–240 V
AC input frequency50/60 Hz
Size & build
Form factor1U

Questions about this item

Is the 1800 W rating the right capacity for my 1U redundant build?

The unit delivers up to 1800 W at 200-240 V input, matching the 80 Plus Platinum efficiency target for high-density 1U servers.

What does the > 90 % efficiency figure mean when the supply is installed?

It indicates the supply exceeds 90 % AC-to-DC conversion at typical loads, reducing waste heat and lowering operating cost in a 1U chassis.

How does the 50/60 Hz input range affect deployment?

The supply accepts both 50 Hz and 60 Hz mains, so it operates worldwide on 200-240 V circuits without configuration changes.

More in Server & Hot-Plug PSUs

Similar items