The Corsair RM850x wins in 2 out of 9 comparable specs, with 6 ties. Its biggest advantage is PCIe Connectors (50% better).
Focus GX-750 wins in 1 spec (MSRP: 29% better).
Recommendation
Choose RM850x if you want the best overall performance — especially pcie connectors.
Choose Focus GX-750 if msrp matters more to you.
