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In what cases is a DRAM-less SSD good enough? (lemmy.ml)

submitted 8 months ago by [email protected] to c/[email protected]

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Where I live, DRAM-less SSDs are a lot cheaper (half the price). Most sources online say "go for an SSD with DRAM". But I wonder, are cases in which a DRAM-less SSD will do just fine?

My main focus is resurrecting old laptops (from 2006 to 2015), installing GNU/Linux and an sometimes investing in an SSD will give them a performance boost, but the budget is limited because I can't sella uch an old laptop at a non very budgety price.

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[–] [email protected] 1 points 8 months ago (1 children)

Having SSD dram allows the SSD to say "done" sooner to the OS despite it taking the same total time.

That's exactly why. When writing to a drive the OS waits until the disk says "done" and then goes about it's business.

If the drive then takes an extra bit of time internally to write to permanent storage that's none of the OS's business as long as it can pull that written data from "somewhere" and deliver it to the OS if asked.

[–] [email protected] 2 points 8 months ago* (last edited 8 months ago)

But it gets "done" immediately when you have write caching enabled and the file fits in ram. Which is on by default for non removable storage. It's only benchmarks which disable write caching in order to separate PC performance from the drive being tested.