How much faster is the flash storage on the MacBook Air than SSD?
Solution 1:
It's still a SATA interface, just miniaturized, hence it's name mSATA. There is a great picture at the following link that shows just how tiny an mSATA drive is compared to a regular 2.5" laptop hard drive. Intel's SSD 310: G2 Performance in an mSATA Form Factor
Solution 2:
From everything I've heard, it's smaller, but not faster.
Article. Article. Article.
Take a look at the benchmarks, especially in the second article. The second and third say that it still uses SATA, just mini/micro or something like that.
Solution 3:
Directly comparing the new MacBook Air against the older model on SSD performance alone, the new MacBook Air is much faster. This is from personal experience and from benchmarks found on various sites posted below:
Old MacBook Air SSD: http://forums.macrumors.com/attachment.php?attachmentid=100432&d=1201904233
New MacBook Air SSD: http://arstechnica.com/apple/guides/2010/10/116-macbook-air-ars-answers-your-burning-questions.ars/2
Can't comment on SSD comparisons with regards SSD drives found in other MacBook models.