Intel have released the P4 600 series. This is a significant update to the Prescott core - not only does it attempt to address the power and heat issues while raising performance, but it also adds 64-bit support. With 2MB L2 cache and Enhanced Intel Speedstep Technology, the first handful of offerings are the P4 660 (3.6GHz), P4 650 (3.4GHz), P4 640 (3.2GHz) and P4 630 (3GHz). There's also a 3.73GHz Extreme Edition version, with a 1066MHz FSB.
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