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Both models are E-ATX in size, and the ASUS ROG Maximus XII Extreme will feature a 16-phase(90А) power delivery running in teamed mode for better transient response, with two 8-pin 12 V ATX CPU power inputs. It is likely the Glacial will have integrated water blocks, but we will confirm this when we get more information, but both Maximus XII Extreme models are likely to have the same core feature set.
ASUS Z490 APEX
With overclocking a main focus for the Apex in previous years, it has a 16-phase power delivery for the CPU with 70 A power stages and operates in a teamed configuration with an ASP1405I PWM controller running at 8+0. Providing power to the CPU is a pair of 12 V ATX CPU power inputs.
ASUS Z490 HERO
It is using a 14-phase power delivery for the CPU with 60 A power stages operating in teamed mode, by an ASP1405I PWM controller running in a 7+2 configuration.