Intel Xeon E3 1245 's Advantages
Higher base frequency (3.3GHz vs 2.3GHz)
Lower TDP (95W vs 120W)
Intel Xeon E5 2669 v3 's Advantages
Released 3 years and 9 months late
Higher specification of memory (2133 vs 3)
Larger L3 cache size (30MB vs 8MB)
More modern manufacturing process (22nm vs 32nm)