Intel Xeon E5 4669 v3 's Advantages
Larger L3 cache size (45MB vs 8MB)
Intel Xeon E3 1575M v5 's Advantages
Released 7 months late
Higher specification of memory (2133 vs 2133)
Higher base frequency (3GHz vs 2.1GHz)
More modern manufacturing process (14nm vs 22nm)
Lower TDP (45W vs 135W)