hmm. this image does not bode well for upgrading my jally. my board is different(?). there are 6 MOSFETS under the 2 bigger copper heatsinks shown on the above image (not two as quoted above) on mine. and 6 more along another side.
mine is a very early jally, board says BitFORCE SC rev C.
I think you might be overreacting as even though you can't see it there are 6 fets under those two sinks. Every board i have seen or heard of have 6 in on corner and another 6 in the other corner. The difference is the "Hot mosfet" design where they're all the same size. I'm assuming he's summing up the sink count. Also all of my boards including the blackfriday special are rev. c just my observations.