BGA research
It removed by saying whether BGA can be removed or what the reverse side of BGA has become.
The green board portion of BGA is a print base, and is attached in the mother board with the solder ball.
Solder was cleaned and scan was carried out with the scanner.
Moreover, only 440 BX was broken. Since it removed forcibly, the substrate has been turned over.
As for 440BXs or PIIX4 (south), a substrate pattern changes with the lots.
The difference in the delicate pattern by BX, GX, and the difference in a lot is interesting.
Since there is 150-400 K bytes of size although a big picture is displayed when a picture is clicked, please be careful.
The reverse-side side and contents which a chip set worries
  Surface Surface
Color compensation
Back Back
Color compensation
Decomposition
440GX
SL2TF
 
440BX(New)
SL2VH
440BX(Old)
SL2T5
 
PIIX4(New)
SL37M
 
PIIX4(Old)
SL2MY