yeah, I'm not sure tech specs for hybrids, but I'm sure it would be faster than the oem 5400rpm ones. As for the SATA limitation. I mentioned it briefly in the video so that people dont go out to buy the best of the best... with most features not being utilized by the ps3 hardware. LOL!
I'm sure if you were thinking of an SSD price you can get a hybrid with a larger capacity. not sure what the comparison would be compared to just all out ssd though.