Quote Originally Posted by CTKP
I think that the D denote 512m, both the speed premium and regular modules have the AADT. They look to have the same ICs

http://www.newegg.com/app/viewProduc...218-062&depa=1
http://www.newegg.com/app/ViewProduc...218-405&depa=1

The difference i see is that the SP's have BP pcb while the other has jedec reference.
You are right...they have the same ICs, the problem is that neither of them have the right ICs. Unless my eyes are playing tricks, neither of those linked modules (both ending in AADT) have the larger Winbond dimples on them, only the smaller hole in the lower corner.

The modules that have been confirmed to work well have had the AA4T coding and both the hole in the lower corner and the circular dimples, just like original Winbond.