[Novalug] ext4 vs. ext3 vs. ext2

Gregory Maxwell gmaxwell@gmail.com
Tue Sep 15 15:58:14 EDT 2009


On Tue, Sep 15, 2009 at 3:29 PM, Bryan J. Smith <b.j.smith@ieee.org> wrote:
> Ironically commodity, MLC NAND SSD devices don't do so well
> compared to one (and even two) platter 4200 or even 5400rpm 2.5"
> hard drives in power consumption and heat.  Battery Backed DRAM
> SSD have similar power consumption issues as well.  And that's before
> you look at per-GB power consumption (where SSD really stinks).  I
> was just talking about physical size comparisons.
>
> A lot of people like to take the best of various SSD approaches and
> merge them as a single, super-tech that doesn't remotely exist.

::shrugs:: The SSD in my laptop draws a bit less than half the current
of the spinning disk it replaced, and roughly the same while loaded.

This is consistent with what other people have found on different
hardware: http://techreport.com/articles.x/15433/13



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