New S1 Socket

The package of the Turion 64 X2 (right) is much smaller, whereas the die is much bigger than...

... that of its predecessor, the Turion 64; the new processor also has 116 fewer pins

The introduction of the new processor is accompanied by the arrival of the new S1 socket in AMD-based laptops. The new socket has 638 pins, compared to 754 pins on the old socket. The packaging for the dual-core CPU is also smaller.

The new S1 socket is only suitable for the Turion 64 X2 with 638 pins

The good news is that the smaller size makes the Turion 64 X2 more suitable for small laptops.