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Silverstone SFX power supply, black rectangular unit with 92mm fan and fixed cables

Silverstone Technology

Silverstone Technology 450W SFX 80 Plus Bronze PSU server chassis

SKU CH-Q7A2-XKYMD

A 450 W SFX power supply with 80 Plus Bronze efficiency, a single +12 V rail, and a 92 mm fan for quiet 24/7 operation

  • Chassis styleDesktop
  • 450 W continuous power at 50 °C for 24/7 operation
  • 80 Plus Bronze efficiency between 82 % and 85 % from 20 % to 100 % load
  • Single +12 V rail delivers 36 A for stable GPU power
  • Silent 92 mm fan runs at 18 dBA for quiet builds
  • SFX form factor with included ATX bracket fits compact and standard cases

SFX 450W Bronze PSU with ATX bracket

This Silverstone Technology server chassis includes a 450W SFX power supply rated for continuous output at 50°C on the V2.0 unit and 40°C on the V3.0 unit. It delivers 80 Plus Bronze efficiency between 82% and 85% across 20% to 100% load. A single +12V rail provides 36A on the V2.0 version and 37.5A on the V3.0 version. An SFX-to-ATX bracket is supplied for larger cases.

Small-form-factor builders needing 450W

The unit suits compact desktop or server builds that accept an SFX supply and require 450W of continuous power with Bronze-class efficiency. The included bracket also allows installation in standard ATX chassis. Builds demanding more than 450W or requiring fully modular cabling should look elsewhere, as this model uses fixed cables and its maximum output is 450W.

Single +12V rail up to 37.5A

The defining specification is the single +12V rail, which supplies up to 37.5A on the V3.0 revision and 36A on the V2.0 revision. This current capacity determines whether the PSU can support the graphics card and CPU combination in a high-density build. The 92mm fan on the V3.0 model runs at 18dBA, while the V2.0 uses an 80mm fan. Both versions include one 6+2-pin and one 6-pin PCIe connector.

How it compares

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

Price $125.99
Cheaper than about 84% of the 1,006 comparable items (median $222.49).

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Specifications

Size & build
Chassis styleDesktop

Questions about this item

Does the included SFX-to-ATX bracket let this 450W unit mount in a standard ATX chassis?

Yes, the supplied bracket adapts the SFX body to ATX mounting holes so the power supply fits a regular desktop case.

Which cables are fixed to the unit, and what is the PCIe connector layout?

All cables are fixed; the unit provides one 6+2-pin PCIe and one 6-pin PCIe connector for graphics cards.

How often should the 92mm fan be cleaned to keep noise near the 18dBA rating?

Clean the fan intake every 6-12 months with compressed air; dust buildup raises noise and reduces airflow over time.

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