PS4 cooling

[Reflex_jigs]

i know that this is a bit random, but i recently came across one of these, https://www.ebay.com.au/itm/314230410096?mkcid=16&mkevt=1&mkrid=705-154756-20017-0&ssspo=tDRdhE5xToO&sssrc=2047675&ssuid=skymklfnsli&widget_ver=artemis&media=COPY

 

and wonder if they actually help to cool your ps4 in a meaningful way?

 

i also plan to cut a hole in the side of my ps4 where the fan is and putting a fan grille over top, will this help with lowering temps?