[jontz]

Originally Posted by Phoenix32

Maybe, just maybe, we can do a little SWAG (Scientific Wild A#$ed Guess) and just guess based on the number of platters used in a drive versus the number of platters used in upgrades we know worked. This last one would probably preclude Seagates because they seem to draw a lot more power on the 12 volt rail than other manufacturers. Any ideas?

Seems like a three platter drive or smaller would work from what I am hearing. 4 platter drives and larger are out because of the startup current needed. I would guess that even 5 platter drives don't draw much more current than a 2 platter once they are going, but there just isn't enough umph out of that 4000 PS to get them going.