like what i wont tell you what it is,i was just messing around so this is what it is.
it's a BGA socket for the CPU.
so if the CPU go's faulty,no problem just undo the four screws change the CPU under 1 min.
blizzard ppc card is classed as unknow for now,as the CPU as not being set this is due to BVSEL as being added in and has not being tested yet,but has pass test upto 300Mhz but with a little bit of luck should work above 300Mhz.
Ah now that makes much more sense.
Which set of pins did you add the socket too? The outer ring QFP or the BGA? How are you clocking it that high and what effect does it have on the rest of the board?