I suspect they have some units with an unacceptable HW error rate at 600MHz so have had to drop the Frequency to 575MHz. Very reminiscent of the S3.
Rich
I'm not quite sure, i noticed that beside the header text, all the rest of the info is the same, same J/GH, but also same power draw, so either its just a different clock and they're selling them higher or the Batch 3 just run the higher freq better while also taking the same J/GH.
One of those value is thus wrong. Either the power draw has to be different or the J/GH.