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Comment by Robotbeat

3 years ago

They aren't. Write endurance is significantly lower than SLC, it's just compensated for by lots of write leveling.

8 comments

Robotbeat

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userbinator  3 years ago

More precisely, endurance and retention become exponentially lower with each additional bit stored per cell, while capacity only increases multiplicatively.

pclmulqdq  3 years ago

They are better. SLC is improving as much as MLC. The ratio of speed, durability, and capacity is the same between SLC/MLC/TLC, but modern MLC is faster and more durable than 5-year-old SLC.

  • jeffbee  3 years ago

    Exactly. And I do not care what the low-level bit performance is if the device-level performance is better.

  • rasz  3 years ago

    >modern MLC is faster and more durable than 5-year-old SLC

    great April fools joke

    • pclmulqdq  3 years ago

      You are probably writing this from a computer using a TLC SSD. Outside of applications that need extreme latency, pure SLC has almost completely disappeared from the storage world. From materials science to management algorithms, a lot has advanced in flash technology in terms of durability.

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