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Compact silver 1U ATX power supply unit with rear fan grille and cable bundle

KHACHIMO

KHACHIMO FSP350-701UH 350W 450W ATX power supply

SKU CH-NSYX-EYZHM

ATX power supply rated at 350 W continuous and 450 W peak with 80 PLUS Gold efficiency, zero-RPM fan mode and Modern Standby support

  • TypeATX
  • Modern Standby support for ultra-fast wake and better low-load efficiency
  • 80 PLUS Gold certified efficiency cuts power draw, noise and heat
  • Zero RPM fan mode stops the fan at low and medium loads for silent running
  • Resonant LLC topology with DC-to-DC conversion delivers clean power and reduces coil whine
  • Rated 350 W continuous with 450 W peak capacity for stable ATX operation

1U 350W ATX Power Supply

The KHACHIMO FSP350-701UH is a 1U form-factor ATX power supply rated for 350W continuous and 450W peak output. It targets compact server chassis or workstation builds that require a slim profile unit. The unit carries 80 PLUS Gold certification for high efficiency across typical loads. Modern Standby compatibility ensures fast wake times and improved low-load efficiency.

80 PLUS Gold Efficiency Limits

The 80 PLUS Gold standard guarantees high efficiency at defined load points, but efficiency drops outside the certified range. Very light loads below the measurement threshold may not benefit from the same efficiency levels. Peak output of 450W is only sustainable for short bursts and not for continuous operation. The 1U height restricts airflow, making case ventilation critical for sustained loads.

Resonant LLC with DC-to-DC Topology

The resonant LLC topology combined with DC-to-DC conversion delivers tight voltage regulation and low ripple on all rails. This design reduces coil whine and enables deeper, more efficient sleep states for Modern Standby systems. Zero RPM fan mode keeps the unit silent at low and medium loads by stopping the fan entirely. Buyers needing higher continuous wattage or multiple GPU power connectors should consider larger form-factor units.

Points forts

  • Modern Standby support for ultra-fast wake and better low-load efficiency
  • 80 PLUS Gold certified efficiency cuts power draw, noise and heat
  • Zero RPM fan mode stops the fan at low and medium loads for silent running
  • Resonant LLC topology with DC-to-DC conversion delivers clean power and reduces coil whine
  • Rated 350 W continuous with 450 W peak capacity for stable ATX operation

Caractéristiques

TypeATX

Questions sur cet article

Should I plan for the 350 W rated output or the 450 W peak when sizing this unit?

The continuous rating is 350 W; the 450 W figure is a short-term peak, so size your build around 350 W for reliable everyday operation.

What does the 80 PLUS Gold badge tell me about everyday efficiency?

It certifies high efficiency across typical load ranges, meaning less waste heat, quieter cooling and lower running costs in a real system.

How does the ATX form factor and Modern Standby support limit or enable my build?

The ATX layout fits standard chassis, while Modern Standby compatibility allows faster wake times and deeper low-power sleep states on supported platforms.

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