Xeon EC5539 's Advantages
Higher base frequency (2.266GHz vs 2.1GHz)
Lower TDP (65W vs 400W)
Xeon 6952P 's Advantages
Released 14 years and 7 months late
Higher specification of memory (8800 vs 1333)
Newer PCIe version (5 vs 2)
Larger L3 cache size (480MB vs 4MB)
More modern manufacturing process (5nm vs 45nm)