Intel Xeon L5609 's Advantages
Lower TDP (40W vs 500W)
Xeon 6979P 's Advantages
Released 14 years and 6 months late
Higher specification of memory (8800 vs 3)
Newer PCIe version (5 vs 2)
Higher base frequency (2.1GHz vs 1.866GHz)
Larger L3 cache size (504MB vs 12MB)
More modern manufacturing process (5nm vs 32nm)