What cards have you tried?
If you stick with general-use mSD card these days they'll most likely be TLC.
The issue mostly is they don't* support TRIM unlike an SSD, and they use bottom-of-the-barrel flash chips (cause consumer grade, pricing is important here).
Pony up a bit more cash for "high endurance" grade (mostly MLC), or even industrial SLC cards at a much higher price point.
My current roster for my small pi4 cluster is a mix of Samsung Pro Endurance, SanDisk High Endurance and Kioxia High Endurance. So far they've been working pretty great for me.
Last time I checked they're about $15-25 a pop, which isn't cheap but not that bad either. I've been meaning to checkout SanDisk's max endurance which supposedly has much better write cycles, which I'll probably do after the card in my dashcam dies.
*On SBCs you could do something *like* trim, but it's not as straight forward, and support depends on the controller of the card wildly.
Pony up a bit more cash for "high endurance" grade (mostly MLC), or even industrial SLC cards at a much higher price point. My current roster for my small pi4 cluster is a mix of Samsung Pro Endurance, SanDisk High Endurance and Kioxia High Endurance. So far they've been working pretty great for me. Last time I checked they're about $15-25 a pop, which isn't cheap but not that bad either. I've been meaning to checkout SanDisk's max endurance which supposedly has much better write cycles, which I'll probably do after the card in my dashcam dies.
*On SBCs you could do something *like* trim, but it's not as straight forward, and support depends on the controller of the card wildly.