Originally Posted by Jagged_Steel
AFAIK all of the BD series chips 81/61/4100 are made as 8 core (4 module) chips. Chips with invalid or low performing cores are used to create the models with 6 and 4 cores, i.e. the 6100 and 4100, respectively. Presumably there are enough CPUs culled from 8 core viability to meet orders for 4 and 6 core BDs. If there was a mad rush for 4100s and they needed to make 4100s out of chips with all 8 cores usable to meet orders , THEN you would have a situation where 4100s might be able to fully unlock to 8 cores. This is exactly the same way current AMD proccessors are binned as 4 or 2 (and 6/3)core units using the same die. My 555 is a 955 with a flaw in 1 core. It was programmed to operate using 2 good cores- but I can open up the other 2- one of them having errors.
Ask yourself, why would AMD deliberately waste that much silicon, I could see them lasering off bad core to make 6 cores and 4 cores. but why waste the silicon to make a 4core ? Hell it doesn't make any sense, you get nearly double the yield per wafer making dedicated 4 core 2 module cpu's by going the way I suggested, so yields would be better period.
I really doubt AMD is going to make unlockable 4 cores, 6 cores however I fully expect to be fialed 8cores. just from a layout perspective.
your counter point makes no sense. as a manufacturer, I wouldn't do it, why would AMD ? thats a waste of money.