Intel Xeon E3 1245 's Advantages
Higher base frequency (3.3GHz vs 2.2GHz)
Lower TDP (95W vs 105W)
Intel Xeon E5 2658A v3 's Advantages
Released 3 years and 9 months late
Higher specification of memory (DDR4-2133 vs DDR3)
Larger L3 cache size (30MB vs 8MB)
More modern manufacturing process (22nm vs 32nm)