The Seasonic Focus GX-850 wins in 4 out of 9 comparable specs, with 3 ties. Its biggest advantage is PCIe Connectors (33% better).
RM750x (2024) wins in 2 specs (12VHPWR Connector: 100% better).
Recommendation
Choose Focus GX-850 if you want the best overall performance — especially pcie connectors.
Choose RM750x (2024) if 12vhpwr connector matters more to you.
