4 ms·
All the SD problems go away if you get a RPi Compute Module instead. Well worth the additional cost.
by not_the_fda 3y ago
All the SD problems go away if you get a RPi Compute Module instead. Well worth the additional cost.
- slow_typist 3y agoHow do the problems go away? Is the lifespan of the built in eMMC longer compared to a high quality wear leveling sd-card? I am a layman, but isn’t the problem the flash which should be basically the same?
- not_the_fda 3y agoAn SD card is using contact pins to make the connection, which is susceptible to dirt and vibration. eMMC is soldered to the board so you no-longer need to worry about environmental and mechanical disturbances. The eMMC has a known supply chain and is guaranteed for 1 million write cycles that are then wear leveled. The SD card could be coming from anywhere, or a counterfeit with who knows how many write cycles and wear leveling. The CMs are built for industrial use and I've shipped a few products based on them, shipping thousands of units. They have had zero flash failures.
- slow_typist 3y agoThanks for elaborating, valuable advice.
- megous 3y agoNot even NOR SLC flashes are regularly specified for 1 million erase cycles. And common MLC/TLC eMMCs certainly are not. What are you talking about? :)