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Silver SFX power supply unit with fan grille and modular cable sockets

Silverstone Technology

Silverstone Technology ST45SF V3 450W SFX Server Chassis

SKU CH-2P9F-6G2DN

A 450 W SFX power supply with 80 PLUS Bronze efficiency and a single 36 A +12 V rail

  • Chassis styleDesktop
  • 80 PLUS Bronze efficiency cuts wasted heat and electricity cost
  • Single +12 V rail delivers 36 A for stable GPU power
  • 450 W output handles mid-range builds with headroom
  • PCI-E 8-pin plus dual 6-pin connectors support modern graphics cards
  • Included bracket lets SFX unit fit standard ATX cases

SFX power supply for compact builds

The Silverstone ST45SF V3 delivers 450W from an SFX form factor with an included ATX mounting bracket. Its 80 PLUS Bronze rating means 82% to 85% efficiency between 20% and 100% load. A single +12V rail rated at 36A provides stable power for modern components. Active PFC helps maintain clean power delivery.

Verify case clearance and connector needs

Confirm your chassis accepts SFX units or has space for the supplied ATX bracket before ordering. Check that your graphics card requires no more than one 8-pin and two 6-pin PCIe power connectors. Ensure the main 24-pin and CPU power cables reach your motherboard headers in the chosen layout.

Bracket and cables simplify installation

The bundled ATX bracket lets the SFX unit fit standard desktop cases without modification. Native PCIe connectors remove the need for adapters when powering compatible graphics cards. Bronze-level efficiency reduces waste heat compared to unrated units, lowering system temperatures.

How it compares

Measured against everything we stock in Rackmount Server Cases, at today’s prices. Recalculated every night.

Price $129.99
Cheaper than about 83% of the 1,006 comparable items (median $222.49).

New to this? Buying PC parts with Monero — what to check, what it costs to pay, and what is never asked for.

Specifications

Size & build
Chassis styleDesktop

Questions about this item

What is included in the box and what must be purchased separately?

The chassis includes an ATX bracket for standard SFX form factor support. A power supply and all other components must be purchased separately.

Which version should I choose based on the listed capacity and efficiency rating?

The unit is a 450W model rated at 80 PLUS Bronze, delivering 82% to 85% efficiency from 20% to 100% load.

What does the 450W headline figure mean once the unit is installed in a real machine?

It provides up to 450W total power with a single +12V rail rated at 36A, plus one PCI-E 8pin and two PCI-E 6pin connectors for graphics cards.

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