"there has been a 3400+ mobile athlon 64 part shipping for some time now, but it was the Desktop Replacement cpu."
There are two flavors of mobile A64s. One has 1 meg. of L2 cache and is rated at a TDP of 57-65 watts. The other is a low power version that has 512k and a TDP of 35 watts. The new 3400+ is probably the former rather than the latter.