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Rectangular silver server PSU, two fans, 20-pin connector, 3.9 by 1.6 by 8.0 inches

Sparkle Power Inc.

Sparkle Power Inc. FSP300-601U 300W server power supply

SKU CH-MKVZ-WKPF8 MPN FSP300-601U

Delivers 300W through a 20-pin ATX connector with dual fans and active PFC for server builds

  • Max wattage300 W
  • Power efficiency68% at minimum measured at nominal AC main voltage and frequ
  • Power supply redundancySingle
  • Main power connector20Pin
  • Output type+3.3 V@20A; +5 V@25A; +12 V@16A;;; +5SB@2A
  • Supply voltage90–264 V
  • 300 W maximum power for server workloads
  • 100,000 hour MTBF at 25 °C full load
  • Active PFC meets EN61000-3-2 for clean input current
  • Dual fans with thermal speed control for quiet cooling
  • Wide 90–264 V input suits global rack deployments

Server PSU for legacy 20-pin builds

The Sparkle FSP300-601U is a 300W single power supply built to the ATX and ATX12V standard. It uses a 20-pin main connector and delivers +3.3V at 20A, +5V at 25A and +12V at 16A. The unit accepts 90-264V input at 47-63Hz for worldwide rack deployment.

Sustained load behaviour with dual fans

Two internal fans run under thermal speed control to keep noise low while the supply operates at full load up to 40°C. Efficiency is rated at 68% under maximum output with active power factor correction meeting EN61000-3-2. MTBF reaches 100000 hours at 25°C and hold-up time is 17ms minimum.

Replaces older 20-pin ATX units

This supply fits servers and workstations that still require a 20-pin main connector rather than the newer 24-pin design. The jump is worth it when the original unit has failed or when ripple and noise have risen beyond spec. It does not suit builds needing redundant power or 24-pin motherboards.

How it compares

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

Price $61.99
Cheaper than about 83% of the 3,798 comparable items (median $131.99).
Max wattage 300 W
Lower than about 80% of the 235 comparable items (median 668 W).

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Specifications

Product
Brand nameSPARKLE
Model nameFSP300-601U
Product typeComplied with ATX and ATX12Vstandard
Ports & slots
Output type+3.3 V@20A; +5 V@25A; +12 V@16A;;; +5SB@2A
Power
Max wattage300 W
Power efficiency68% at minimum measured at nominal AC main voltage and frequency with maximum load on all output
Power supply redundancySingle
Main power connector20Pin
Supply voltage90–264 V
AC input frequency47–63 Hz
Rated input current6A @ 115 V, 3A @ 230 V
Power hold-up time17 ms min.
Size & build
Product dimensions3.9 in × 1.6 in × 8.0 in
Shipping weight1.52 kg
Package size203 × 102 × 51 mm
Environment & compliance
Humidity range5 to 95% on operating and storage
Temperature range0 °C to 40 °C on full load
More details
Fan configuration2
Mean time between failures100,000 h on maximum load at 25 °C degree

Questions about this item

How loud is the dual-fan cooling at full 300 W load?

Two internal 12 V DC fans run under thermal speed control; the Noise Killer function slows them when temperatures allow, keeping acoustic output low during continuous operation.

Which motherboard power connector does the 20-pin main lead fit?

The supply terminates in a 20-pin ATX main connector, so the host board must provide a matching 20-pin socket or a 24-pin socket that accepts the 20-pin plug.

Will the 90–264 V auto-range input work with my existing 230 V rack PDU?

Yes — the unit accepts 90 to 264 V at 47–63 Hz and draws 3 A at 230 V, so it connects directly to standard 230 V rack power distribution without a selector switch.

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