What cooler does Ryzen 7 7700X3D need, and how do gaming and sustained all-core loads differ?

  An 8-core X3D draws little: a mid-range tower handles it and 360mm is unnecessary. Gaming puts very little strain on the cooler.

  Install, run ten minutes all-core to confirm clocks, and you are done. Higher all-core readings are the X3D heat-retention trait; if performance holds, no action is needed.