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Much of the energy efficiency these new processors provide comes from Intel's advanced 45nm manufacturing capability and its reinvented transistors that use a Hafnium-based high-k metal gate formula. In addition, all previously launched versions of the Intel Xeon 5200 and 5400 series will now be halogen-free.

The processors are drop-in compatible with existing Intel dual processor platforms that have been in the market since 2006. 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. Organizations using workstation, high-performance, blade and mainstream servers will benefit most from this increased versatility.

Recent benchmark results on these processors show that Intel continues to deliver higher performance within the same power envelope with each Xeon® processor advancement. On the SPECint*_rate2006, which measures Integer throughput performance, a SuperMicro SuperServer 6025B-TR+ server running the X5470 processor sets a world record1 with a score of 150. A Fujitsu-Siemens PRIMERGY RX200 S4 server using the X5470 processor running SPECjbb*2005 benchmark extends Intel's lead on Oracle JRockit® JVM with a score of 316,728 BOPS.

Quad-Core Intel Xeon Processor L5430: 2.66GHz, 1333MHz, 50W, $562

Quad-Core Intel Xeon Processor X5470: 3.33GHz, 1333MHz, 120W, $1386

Quad-Core Intel Xeon Processor X5492: 3.4GHz, 1600MHz, 150W, $1493

Dual-Core Intel Xeon Processor X5270: 3.5GHz, 1333MHz, 80W, $1172