Ran into this one, thought it was amusing so here it is:
Source OCZ had to slow down its SSDs because Mac OSX can't handle the speed
Recently, OCZ introduced its line-up of products for Apple platform, as we covered it in our news story. What was weird was the fact that the Vertex Mac Edition SSDs come with different speeds compared to its PC version. If you compare the PC Version of Vertex SSD to a Mac-certified one, you will see that unfortunately, Mac SSDs endured a spec-down by 10MB/s, both in the areas of read and write.
Source OCZ had to slow down its SSDs because Mac OSX can't handle the speed