Intel today annouced it has began shipping its new Quad-Core 45nm halogen-free Intel® Xeon X5492, X5470 and L5430 processors.  The fastest of these processors run at 3.4GHz and the low voltage versions only use 12.5 watts of power per core.  The slightly faster x5270 uses 80 watts of power and runs at 3.5 GHz.  Prices begin at $562 dollars and increase up to $1172 for the fastest chipset.