Intel’s latest Xeon server processors are based on 45-nanometer (nm) manufacturing process, and are completely free of halogen. The Quad-Core Intel Xeon Processor 5400 Series consists of the new X5492, X5470 and L5430 processors, the fastest of which boasts a clock speed of 3.4GHz. The low voltage version uses only 50 watts of power or just 12.5 watts per core. The Dual-Core Intel Xeon Processor X5270 runs as low as 80 watts with frequencies as high as 3.5 GHz.