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by juancampa 2795 days ago
Probably because systems that passively do their job tend to be preferred.

Also a battery would only last so long. IIRC DRAM needs to be constantly refreshed, so, it would be a trade-off between capacity and duration.

Optane seems[1] to be 20~30X slower than DRAM but 4~10X faster than server SSDs

[1]: https://superuser.com/a/1195674/187732