SilverStone Technology Extreme 550Rz Gold 550W SFX12V 4.1 PCIe Gen 5 Modular SFX Power Supply, SST-EX550R-GM

SilverStone Extreme 550Rz and Extreme 650Rz are part of Extreme series lineup of SFX and SFX-L form factor units. These two models are standard SFX units designed to deliver steady output of 550W and 650W, respectively, aimed at supporting small form factor (SFF) ecosystems where space efficiency is crucial. Both the Extreme 550Rz and Extreme 650Rz are designed in compliance with the latest Intel SFX12V 4.1 standards, incorporating premium components that adhere to the SFX12V 4.1 specification. Due to their modest power ratings, these units do not include a 12V-2x6 power connector as standard, as the components they are intended to support do not typically require this. However, a native 12V-2x6 connector port is incorporated, capable of delivering up to 450W of power, ensuring compatibility for future hardware upgrades. These units are 80 PLUS Gold certified, ensuring over 90% energy efficiency at typical loads, which reduces energy consumption and heat output; perfect for power-conscious SFF builds. Both models also feature high-quality Japanese capacitors, which are known for their durability and reliability, providing stable power delivery over long periods. A key feature of the Extreme 550Rz and Extreme 650Rz is their semi-fanless mode, where the cooling fan remains off during low to moderate loads, ensuring silent operation for users who prioritize a quiet computing experience. The fan only activates under heavier loads, maintaining optimal temperature control without sacrificing noise levels. In addition to their compact size and efficiency, these power supplies come with comprehensive protection features, including over-current protection (OCP), over-voltage protection (OVP), short-circuit protection (SCP), and more. These safety features ensure reliable operation and safeguard connected components from electrical anomalies. With their compact design, energy efficiency, semi-fanless operation, and full SFX and SFX-L compatibility, the Extreme 550Rz and Extreme 650Rz are ideal choices for SFF PC builds or workstations where reliability, quiet performance, and space-saving solutions are critical.