Question about Corsair HX1500i (2023)

You probably refer to Corsair Premium Pro-Kit Typ 4 Gen 4 cable set (?). This should work. The original cables for HX1500i are indeed on the poorer side. I replaced one from an AX1200i.

The Corsair Premium Pro-Kit Type 4 Gen 4 premium individually sleeved cable sets basically work with HX1500i type 2023. The cable sets are copy<righted 2020 and are specified for use with RMx, RMi, HX (2017), AX (2018) and AX1600i power supplies. Do not expect them to include a 12VHPWR cable, this would have to be bought separately.