Xeon E7530 's Advantages
Higher specification of memory (1333 vs 3)
Lower TDP (105W vs 130W)
Intel Xeon E7 8870 's Advantages
Released 1 years and 1 months late
Higher base frequency (2.4GHz vs 1.866GHz)
Larger L3 cache size (30MB vs 12MB)
More modern manufacturing process (32nm vs 45nm)