The Corsair HX1500i wins in 2 out of 9 comparable specs, with 6 ties. Its biggest advantage is PCIe Connectors (133% better).
SF850 wins in 1 spec (MSRP: 43% better).
Recommendation
Choose HX1500i if you want the best overall performance — especially pcie connectors.
Choose SF850 if msrp matters more to you.
