backside cooling

I have an Alder Lake N97 mini-ITX motherboard which has a soldered-down BGA CPU and non-standard heatsink. Upgrading the heatsink isn't a very realistic option, at least not without some custom machining that I'm not setup to do. I have added case fans, but the CPU is still sometimes pegged at...

Hello all, I am shopping for a 280mm PC fan to put in the back side of my Thermaltake Tower 900: https://www.thermaltakeusa.com/the-tower-900-snow-edition.html I am NOT looking for a AIO, just looking for a 280mm case fan. I am searching online but all I can find are 240mm case Fans and not...