be quiet! Be Quiet SFX Power 3 450W

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💡 How to pick a power supply
What to look for:
  • Wattage exceeds total system draw by 20-30% headroom
  • 80+ Gold or higher for efficiency
  • Modular cables reduce clutter in your case
💰 Mid-range builds: 650-750W. High-end with RTX 4080+: 850W-1000W+
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ProductWattsRatingModularColorValuePrice
Be Quiet SFX Power 3 450W PSU
Be Quiet SFX Power 3 450W
be quiet!★★★★4.4
450W
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$123.99
Specifications
Watts450W
addedAt2026-05-15T13:17:14.418Z
sourceamazon-discovery
Form FactorSFX
Customer Reviews★★★★★5.0 · 1 review
★★★★★Durable and reliable
For a small form factor, low TDP system you're really threading the needle of size, power, noise level, and heat. This is a very weird size category for power supply, so you're going to be limited on the venn diagram of "power supplies that fit the case," "reasonable prices" and "power supplies that are from. Reliable brands." Given that a bad power supply can literally burn your house down - reliable brand is a non negotiate factor for me. It was a easy install. Definitely value for money.
Amazon Customer · 2025-10-16 · via amazon
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$123.99
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Be Quiet SFX Power 3 450W PSU