Intel Prepares ATX12VO V3 PSU Standard with 8-Pin Connector and PMBUS

A leak from momomo_us on X suggests Intel is updating the ATX12VO standard to Version 3, adding an 8-pin connector, removing the standby rail, and introducing Low Power/High Power modes for safety and efficiency. The update also brings PMBUS-based digital power management for motherboard communication, totaling 12 pins. Benchmarks reportedly show up to 29% better idle efficiency and roughly 12% higher efficiency under load versus traditional ATX PSUs, with an official announcement possible around Computex 2026.