Intel Xeon E5606 's Advantages
Higher base frequency (2.133GHz vs 2GHz)
Lower TDP (80W vs 160W)
Xeon 6543P B 's Advantages
Released 14 years late
Higher specification of memory (5600 vs 3)
Newer PCIe version (5 vs 2)
Larger L3 cache size (128MB vs 8MB)
More modern manufacturing process (5nm vs 32nm)