The heasink over the PCH is massive and dominates the real estate on the bottom side of the ROG Maximus III Formula. The VRM heatsinks look small by comparison to what is used on some of the current X58 and older hardware. This may well be ASUS's Extreme Design concept in action. More equal loading of the power phases reduces hot spots by spreading the load so a smaller heatsink may well do the job. The heatsink in the middle lights up when the board is powered up.