Spec score 8.3
550 Watts, Gold, SFX
+Compact SFX form factor for small builds
+550W output for mid-range systems
+Includes 16-pin GPU connector
$169.12
as of 11/04/2026 07:08 PST - DetailsProduct details
Silverstone Technology Extreme 550Rz Gold 550W SFX12V 4.1 PCIe Gen 5 Modular SFX Power Supply, SST-EX550R-GM
$169.12as of 11/04/2026 07:08 PST - Details
View on AmazonSpec score8.3
Pros
+Compact SFX form factor for small builds
+550W output for mid-range systems
+Includes 16-pin GPU connector
+PCIe Gen 5 compatible
Compared with the 1 Power Supplies on this page+Gold: the highest efficiency of the 76 here
−550 watts: 73 of the 75 here have more watts
−Fully modular not listed: 59 of the 76 here list one
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