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Rectangular silver server PSU with rear fan grille and 20+4 pin connector

Graviton

Graviton 300W Server Power Supply 69Y5537 81Y6301 00J6070

SKU CH-XWBF-RM3H8

300 W server power supply with active PFC and 20 + 4 pin connector for System x3250 M4

  • 300W output powers System x3250M4 servers reliably
  • Active PFC corrects power factor for efficient operation
  • 100-240V input supports global voltage ranges
  • 20+4 pin and 4 pin CPU connectors fit compatible boards
  • Non-modular design simplifies installation in fixed configurations

Target system and role

This 300W server power supply is built for the System x3250M4 and carries part numbers 69Y5537 81Y6301 00J6070. It delivers 300W through a 20+4Pin main connector and a 4 pin CPU power connector. Active PFC corrects the power factor across the 100-240v input range. The unit is new and non-modular.

Replacement scope and upgrade threshold

It directly replaces the original 300W module in the x3250M4 when that unit fails or shows voltage drift. The jump is worth it when the existing supply cannot hold rated output under full system load or when certification requirements demand a fresh unit. Builders who need more storage drives or a second graphics card will exceed the 300W budget and should look elsewhere.

Sustained-load behaviour

Under continuous load the active PFC maintains stable input current while the fixed cable set powers the 20+4Pin and 4 pin rails without modular junction losses. The 99% condition rating indicates minimal prior wear so thermal performance stays consistent over long runs. No 80 PLUS level is claimed so efficiency at high load follows the Other Certification baseline rather than a published tier.

How it compares

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

Price $98.99
Cheaper than about 70% of the 3,798 comparable items (median $131.99).

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Specifications

No published specifications for this item yet.

Questions about this item

What server chassis and motherboard connector does the 300W unit fit?

The supply is built for the System x3250M4 and uses a 20 + 4Pin motherboard interface.

How do I install it and what step is often missed?

Slide the PSU into the x3250M4 bay until it clicks, then attach both the 20 + 4Pin main plug and the 4 pin CPU power connector; the CPU plug is the step most often forgotten.

Which part will need replacement first under continuous load?

The internal cooling fan is the only moving component and will typically require replacement before the solid-state circuitry.

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