The Corsair SF850 is the objective winner of this comparison, securing victories in six out of seven evaluated specifications. Its most significant advantage is the warranty, which is 233% better than that of the alternative. This superior coverage provides a substantial increase in long-term reliability and manufacturer support for the unit. By outperforming the competition across nearly every measured category, the Corsair SF850 establishes itself as the more robust and feature-rich power supply option.

Users prioritizing long-term hardware protection and reliability should choose the Corsair SF850 for its extensive warranty coverage. Conversely, the EVGA 500 BQ is the appropriate selection for budget-conscious builders who prioritize a lower initial MSRP, which is 80% better than the competitor. While the EVGA 500 BQ offers a clear financial advantage at the point of purchase, the Corsair SF850 remains the superior choice for those seeking a more durable and technically advanced power solution.