"j" also has C1E which is a type of thermal throttleing, that drops your multi to 14x and your voltage by .1 During idle time/lower usage time. ALL J chips are E0 stepping, i have a 3.2j and i can get like 4.3 easy with my AS8 around 1.55v, water cooled. They also have crappy 64-bit extensions, and XD like he said^