I've actually moved the two drives out of the endurance rig and into my main desktop. I want to see what happens over the next week, as I noticed that the drives seem to be not in-considerably faster.

After 21 hours, the M3P is at 270MB/s and the 830 is at 303MB/s. I'm probably hallucinating, but I feel like there is something preventing the drives from running quite as fast as they should. Both rigs are on 10.6.1002, one H67 and Z68.

Perhaps I imagined it, but we'll see.