Hello. Does anyone know about random write and read speed of eMMC modules? And about their durability? How many writes do they support? And what is their block/sector/cell size?
eMMC are all pretty similar in terms of read/write speed and random IOPs. They are manufactured based on availability rather than any specific module. We only work with commercial customers on specialized models for certain application like TLC/QLC and controller capabilities.
what would be the typical random read and write?
It can vary dramatically. Typically the larger the size, the faster the speed. The best eMMC can sustain 100MB/s and the worst 10MB/s, both of which is more consistent than SD cards. Our 32GB modules can burst 150MB/s+ and sustain 60MB/s+ sequential until the flash starts to garbage collect.
Thanks. With these being said, it seems a good SSD is much a better option for SBCs which support USB 3.0 like Alta.
Not necessarily. SSD consume up to 7W which is twice what the boards typically consume. eMMC barely consumes less than 1W. If you need a SSD, you shouldn’t be using a < $50 SBC.
Alta is over 100 on Amazon.ae:
We have no distributors in UAE. This is not sold by through official channel or it is sold through Amazon FBA global with Amazon’s markup.
Oh so that’s why it is so expensive? Good to know.