The NZXT C1500 Platinum wins in 4 out of 9 comparable specs, with 2 ties. Its biggest advantage is PCIe Connectors (100% better).
VERTEX GX-1200 wins in 3 specs (SATA Connectors: 50% better).
Recommendation
Choose C1500 Platinum if you want the best overall performance — especially pcie connectors.
Choose VERTEX GX-1200 if sata connectors matters more to you.
