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    be quiet! BN638 SFX L Power 500W, 80 PLUS Gold efficiency, power supply, full cable management, quiet operation thanks to 120mm high-quality fan.



    • Mfr Part Number: BN638
    • Features:
      • 80 PLUS Gold certification (up to 92% efficiency)

      • Multi-GPU support with four PCIe connectors 

      • Stable LLC, Synchronous Rectifier (SR) and DC-to-DC power conversion 

      • Modular cables for maximum build flexibility

      • Temperature-controlled 120mm high-quality fan

      • SFX-to-ATX adapter bracket for usage with larger case sizes

      • 3-year manufacturer€™s warranty
    • Power:
      • Continuous Power: 500W
      • Peak Power: 550W
    • Input:
      • Voltage: 100 ~ 240 VAC
      • Current: 10 A
      • Frequency Range: 50 ~ 60 Hz
    • Type: ATX12V v2.4 / EPS12V v2.92
    • Power Factor Correction: Active PFC
    • Efficiency: 80Plus Silver, up to 91% @ 20~100% load
    • Fan: 120mm Silence-optimized Rifle Fan
    • Output: +3.3V @ 20A, +5V @ 20A, +12V1 @ 41.7A,  +5VSB @ 3A, -12V @ 0.3A
    • Connectors: 1x 20+4-pin ATX Main Connector, 1x P4+4 CPU Connectors, 4x 6+2pin GPU PCI-Express Connectors, 6x 15-pin SATA Connectors, 3x 4-pin PATA Connectors
    • Protection: OCP/ OVP/ UVP/ SCP/ OTP/ OPP
    • Approvals: CE, CB, TUV, FCC, cTUVus, RCM, ErP, WEEE, RoHS
    • Color: Black
    • Dimensions (WxLxD): 130.0 x 125.0 x 64.0 mm
    • Weight: 1.14 kg


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