Fragmentation, probably not. Low page density (a side effect of fragmentation), hell yes. Having half of your expensive SSD going to waste because of low page density isn't the greatest of ideas.
I agree. I think Jonathan Kehayias did a blog post about that (and also about sequential IO actually being faster on SSDs too, just like on rotating media).
Kevin G. Boles
SQL Server Consultant
SQL MVP 2007-2012
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