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Dealing with faulty RAM modules in 2026 (blog.kumio.org)
submitted 10 months ago by to c/selfhosted@lemmy.world
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How to test and safely keep using your janky RAM without compromising stability using memtest86+ and the memmap kernel param.

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[–] -3 points 10 months ago (5 children)

First rule in computer building is to always buy twice as much RAM as you actually need so you can just remove the bad stick when this happens

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  • [–] [S] 5 points 10 months ago* (last edited 10 months ago) (3 children)

    I always heard the first rule as "stay grounded". Having 1TB of RAM on stock just in case sounds not grounded.

    A spare kit or two should be enough for most folks. With one or two spares of everything else so you can test suspicious parts separate from prod.

    A bit of redundancy and foresight is good but no need to be excessive about it.

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  • [–] 1 point 10 months ago (2 children)

    Needing 1TB of RAM is far outside the standard case.

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  • [–] [S] 2 points 10 months ago* (last edited 10 months ago)

    OK, so let's cut it down and say we have 4 PCs for someone with a family and home server, with 4 DIMMs each.

    You are saying the first rule of PC building says that this house should have at least 16 unused DIMMs on the shelf. I'd say 2-4 is reasonable if they are all compatible.

    "Buy two extra of everything" is a good rule and scales for the individual. "Buy double of everything" is not.

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