Intel Xeon E3 1575M v5 's Advantages
Higher base frequency (3GHz vs 2.6GHz)
Lower TDP (45W vs 65W)
Intel Xeon E 2378 's Advantages
Released 5 years and 8 months late
Higher specification of memory (3200 vs 2133)
Newer PCIe version (4 vs 3)
Larger L3 cache size (16MB vs 8MB)