I use RackBrutes. They’re supposed to have 88hp per row. They actually have 89. I always leave the extra 1hp for better ventilation.
And against space clowns... I have an adorable (fawn) pug and five cats (including two black cats, @wishbonebrewery ;)

Otherwise, I don’t know what it’s worth, but there is also this: https://www.modulargrid.net/e/konstant-lab-pwr-checker

'On ne devrait jamais quitter Montauban' (Fernand Naudin).
https://soundcloud.com/petrus-major/tracks