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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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[–] [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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