Intel Xeon E5 1691 v3 's Advantages
Higher base frequency (2.5GHz vs 2.1GHz)
Lower TDP (135W vs 400W)
Xeon 6952P 's Advantages
Released 10 years late
Higher specification of memory (8800 vs 2133)
Newer PCIe version (5 vs 3)
Larger L3 cache size (480MB vs 35MB)
More modern manufacturing process (5nm vs 22nm)