According to new reports, the 40GB PS3 model not only runs cooler and is quieter, but also uses 65W less overall power, for a total running wattage of 135W. Quite an impressive drop in power draw for just the processor swap to 65nm. This almost makes up for the blatant lack of backwards compatibility. Almost.
A report from German site Computer Base reveals that consumers giving up backward compatibility on their 40GB PS3s are at least getting something in return. The new systems utilize the new 65nm version of the Cell processor, reducing the power usage from 200 watts to 135 and further limiting the heat and noise the system gives off.
Source: Joystiq