Intel Xeon E3 1225 v5 's Advantages
Released 4 years and 8 months late
Newer PCIe version (3 vs 2)
More modern manufacturing process (14nm vs 32nm)
Lower TDP (80W vs 130W)
Intel Xeon W3690 's Advantages
Higher specification of memory (DDR3 vs DDR3)
Higher base frequency (3.466GHz vs 3.3GHz)
Larger L3 cache size (12MB vs 8MB)