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Rectangular silver ATX power supply unit with cooling fan grille and modular cable connectors

KHACHIMO

KHACHIMO X3550 M3 X3650 M3 675W Power Supply

SKU CH-9ZTZ-1BSG6

Replacement 675 W ATX unit for X3550 M3 and X3650 M3 servers with 80 PLUS Gold efficiency and a zero-RPM fan mode for silent low-load operation

  • Product typeATX
  • Fast wake and better low-load efficiency with Modern Standby support
  • Lower consumption, less noise and cooler running via 80 PLUS Gold certification
  • Near-silent operation at low and medium loads thanks to Zero RPM fan mode
  • Clean, consistent power and reduced coil whine from resonant LLC topology with DC-to-DC conversion
  • 675 W ATX power supply compatible with X3550 M3 and X3650 M3 systems

675W ATX Power Supply for Lenovo Servers

This 675W ATX unit is designed as a direct replacement for the Lenovo ThinkServer X3550 M3 and X3650 M3. It matches the original part numbers 39Y7216, 39Y7218, 39Y7235, 39Y7236 and 39Y7217. System administrators maintaining these specific rack platforms can restore factory power specifications without modification.

80 PLUS Gold Efficiency and Silent Cooling

The 80 PLUS Gold certification delivers high efficiency across typical loads, reducing waste heat and operating noise. A Zero RPM fan mode stops the cooling fan completely at low and medium loads for near-silent operation. Resonant LLC topology with DC-to-DC conversion provides clean power output and reduces coil whine. Modern Standby compatibility enables extremely fast wake-from-sleep times and improved low-load efficiency.

675W Capacity for Dual-Processor Configurations

The 675W rating comfortably supports dual-processor configurations with multiple memory modules and storage drives typical of the X3550 M3 and X3650 M3. Headroom exists for standard RAID controllers and additional PCIe cards within the server chassis. Builds requiring multiple high-power GPUs or extensive drive arrays beyond the original server design will exceed the available wattage.

How it compares

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

Price $216.99
Pricier than about 66% of the 10,869 comparable items (median $142.99).

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Specifications

Product
Product typeATX

Questions about this item

How often will the 80 PLUS Gold certified 675W unit need its fan bearings serviced or replaced?

The Zero RPM Fan Mode keeps the fan off at low and medium loads, reducing wear on the bearings and extending the interval before any service is required.

What is the first limit reached when this 675W supply runs at full load continuously?

The 675W maximum output rating is the hard ceiling; once the connected hardware draws that much power the unit cannot deliver more without triggering protection.

How much noise and heat does the 80 PLUS Gold 675W PSU produce during all-day operation?

At low and medium loads the fan stays completely stopped for silent running, while Gold-level efficiency keeps waste heat and power draw lower than less efficient designs.

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