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Typical guaranteed Tb written limit for a 500Gb 3-bit cell consumer SSD is only 300Tb. (Eg: Samsung 970evo NVMe: https://www.samsung.com/semiconductor/minisite/
by pja 6y ago
Typical guaranteed Tb written limit for a 500Gb 3-bit cell consumer SSD is only 300Tb. (Eg: Samsung 970evo NVMe: https://www.samsung.com/semiconductor/minisite/ssd/product/consumer/970evo/ https://www.samsung.com/semiconductor/minisite/ssd/product/c... )
So if you’re writing 30Tb in 2 months, you’ll start hitting the warranted wear limits in 20 months. I don’t think people expect their Apple laptops to fail in < 2 years.
If they’ve gone for (significantly more expensive) 2-bit cell (Samsung 970pro equivalent), then the write limits are 4-5 times greater - Samsung claims 1200Tb for the 970pro. I don’t believe Apple publishes the detailed specifications of their SSD flash chips anywhere though, so it’s impossible to know where the limit is for Apple devices.
- nojito 6y agoGo through the twitter thread. there are other users with much more reasonable numbers. The parent tweet is a clear outlier.
- pja 6y agoThere are also several with much worse numbers.
- foldr 6y agoIt’s been a while now that some MacBook models have had soldered on SSD storage; it’s not new with the M1 Macs. If there were serious reliability issues we’d have seen them already.