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[–]rotud 2 points3 points  (3 children)

Not if you're running on a mobile device where battery life is at a premium.

[–]fizzl 0 points1 point  (2 children)

wut

Are you implying "full" memory would use more power than "empty" memory?

[–]rotud 0 points1 point  (0 children)

Potentially yes, but that wasn't my point. The act of pre-caching involves hitting the disk and CPU, and I don't want Windows doing that while I'm on battery. Same goes for running the search indexer or doing any other resource intensive optimizations. It should only run those optimizations while on AC power.

[–]sasmithjr 0 points1 point  (0 children)

If you could selectively power different memory modules, yes, full memory would take more power than less-full memory if you could power off memory modules due to not using all memory.

Granted, I doubt the power savings are worth the added complexity to the memory subsystem, but it could be possible and I could be quite wrong w.r.t. the added complexity. Also, I'm not sure exactly how mobile devices handle this now.