Intel Xeon E5503 's Advantages
Lower TDP (80W vs 165W)
Intel Xeon Gold 5318S 's Advantages
Released 11 years and 1 months late
Higher specification of memory (DDR4-2933 vs DDR3)
Newer PCIe version (4 vs 2)
Higher base frequency (2.1GHz vs 2GHz)
Larger L3 cache size (36MB vs 4MB)
More modern manufacturing process (10nm vs 45nm)