http://en.wikipedia.org/wiki/Pentium_4#Cedar_Mill
Quoted straight from Wikipedia,
as it wraps it up very nicely:
"Cedar Mill
The final revision of the Pentium 4 was Cedar Mill, released in early 2006. This was simply a straight shrink of the 600-series core to 65 nm, with no real feature additions. Cedar Mill is expected to solve the overheat problems of Prescott, as it will have a 86 W TDP. Cedar Mill is a 65 nm core which will feature a 31-stage pipeline (just like Prescott), 800 MHz FSB, EM64T, HyperThreading and Virtualization Technology. Cedar Mill will also have a 2 MB L2 cache. Cedar Mill will be released as Pentium 6x1 and 6x3 at frequencies from 2.8 GHz up to 3.8 GHz."
It doesn't look like a server 'chip' to me guys.
Looks aimed at the gamer & video encoder market, etc
It would be 'OK' in a server / workstation role though, but you'd be better off with a Pentium D, Xeon, or the new Xeon Low Voltage CPU (at 2 GHz it is beating 3.6 GHz Xeons in performance) which is similar to what the Conroe will be later in the year.