Depending on CPU heatsink the U version may create a clearance issue. As long as there is no case interference the S version works well slanted towards the rear of the board.
For best results the length of the base needs to be trimmed slightly. Also as I have already wrote the SMD caps sit higher off the board then the PWM slave chips that you will be cooling. The thermal tape will have to be trimmed so as to act as a spacer to hold the cooler off the caps.
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