GTX 460M


I am looking for a notebook and was wondering if GTX460M, being CC2.1, support double-precision.
Also, any suggestions for a notebook with GTX460M/GTX470M/GTX480M with i7 are greatly appreciated.
Major points are fan noise and price.

Afaik, it supports double, but max performance is not 1/4 of single, but like 1/6.