It does look good. However, it's only on high end Intel mobos, which are expensive. Plus simple laws of economics dictate that over time SSDs should become more reasonably priced. SSDs are still the next big thing in IT, one of our rivals just bought $0.25mil of SSDs... and they wouldn't have done so without good reason.
Also wear would be issue using an SSD as a cache that constantly reads/writes to move files. Lifespan could be quite short, which at current prices isn't preferable.
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