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Compact 1U Flex power supply, matte black finish, fully modular cables, 40 mm fan visible

Graviton

Graviton 500W Flex 1U server power supply 550W 80+ Gold

SKU CH-AMP9-3P6Y9

Compact 1U Flex power supply delivers up to 600 W with 80 PLUS Gold efficiency, full modular cables and active PFC for small-form-factor servers and mini-ITX builds

  • 80 Plus Gold certified efficiency reduces energy waste
  • Full modular cabling simplifies installation in compact cases
  • 550 W rated output supports demanding server workloads
  • 1U Flex form factor fits space-constrained ITX chassis
  • Active PFC with 90-264 V input ensures stable power worldwide

Compact 1U Flex Form Factor

This 1U Flex power supply fits small server chassis such as the K39, A4, S3, G5 and ITX mini cases. It delivers a rated 550 W with a 600 W maximum peak, making it suitable for desktop and server builds that demand high density. The unit is fully modular so only the cables you need occupy the tight interior.

90–264 V Input With Active PFC

The wide 90 V to 264 V input range lets the unit operate on global mains without a voltage switch. Active power factor correction keeps the draw clean and meets 80 PLUS Gold efficiency targets. A 4 cm fan provides airflow within the 150 mm by 81.5 mm by 40 mm enclosure while the design follows the Flex12V 2.0 specification.

Dual 6‑Pin GPU And Dual SATA Connectors

Two 6‑pin PCIe connectors supply graphics cards or accelerators, while two SATA ports handle storage drives. An 8‑pin CPU connector, a 20+4‑pin main connector and a D‑type bus round out the output options. The 500 W continuous rating leaves headroom for typical ITX workloads, but multi‑GPU arrays or large drive counts will exceed the available connectors and power budget.

How it compares

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

Price $121.99
Cheaper than about 57% 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

Which power rating should I pick — 500 W, 550 W or 600 W?

The unit is labelled 500 W model TF500W with a rated output of 550 W and a maximum peak of 600 W; choose based on the continuous load your build will draw.

What does the 80 PLUS Gold rating deliver in a live system?

Gold certification means the supply reaches at least 85 % efficiency at typical loads, so less waste heat and lower electricity draw under real workloads.

The 20+4 pin ATX connector follows which Flex standard and what does that limit?

It conforms to Flex12V version 2.0, which defines the pin-out and mechanical size for 1U flex form-factor chassis.

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