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Comment by cheschire | Hacker News Reader

Those micron factories won’t even be targeted at consumer-grade RAM though, right?

There is no such thing as "consumer grade RAM". Servers still take DIMMs, ECC DIMMs just has more chips on it (previously 9 instead of 8, but now 10 instead of 8 as of DDR5; you'll see some DDR5 DIMMs with 5 instead of 4 because they're double die packages).

Micron, Samsung, and Hynix just basically sell you chips that comply with the JEDEC spec, and the DIMM manufacturers further bin them according to purpose. The highest end chips (that are stable at high clocks and acceptable voltages) end up in enthusiast performance products, the ones that don't work well at all but still meet JEDEC spec are sold to Dell/HP/Lenovo/etc for Grandma's Facebook machine, and the ones that are exceptionally stable at thermal design limits are plunked onto ECC DIMMs and sold to servers.

Also, as others have mentioned, its just a fab, and it can make any of the dies they're able to make. Whatever needs to be made to meet demand, they make, they just can't turn on a dime and react to quarterly concerns, and are locked into cycles that may range from 6 months to 18 months.

Side note that is also worth mentioning, sometimes you can order special bins of parts with features that wouldn't normally be available if you're willing to order enough. Recent example being Nvidia buying overclocked GDDR6 chips from Micron with additional features enabled; Micron was more than happy to become Nvidia's exclusive supplier for the custom GDDR chip if Nvidia was willing to buy out the entire run. Stuff like this happens every so often, but isn't the norm.

If there’s no such thing as consumer grade RAM, then what did Micron’s announcement mean?

https://investors.micron.com/news-releases/news-release-deta...

Re-read the previous comment again.

You just need an additional chip to move from "consumer grade" (ie no parity) to "server grade" (ie have parity). ECC support is actually in the memory controller which is in the CPU for the last 15 years. No magik.

The announcement means that they're closing Crucial - just like it says in the title and the first paragraph. The rest of that press release is outlining the mechanics of how that works + some fluff. Micron is going to continue producing the exact same memory chips in the exact same fabs. They're just not soldering it to a board, slapping the Crucial logo on it, and selling it directly to consumers. There's nothing stopping downstream vendors from buying Micron chips, soldering them to a board, and selling them to consumers as Micron was doing previously.

There's nothing in that press release that implies that the memory was somehow different (or "consumer-grade"). The _only_ thing they're saying is that they're ending their B2C business and focusing on B2B.

Didn’t you just describe the literal difference between consumer grade RAM that is soldered to a consumer format board vs a memory chip sold to a company to be soldered onto a product of the other company?

Calling it "consumer-grade RAM" is inaccurate - RAM is RAM. When you solder it to a board, you now have a DIMM that is carrying RAM chips. It's a semantic difference, but it's important.

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