Xeon E7 8870 's Advantages
Larger L3 cache size (30MB vs 8MB)
Xeon E 2104G 's Advantages
Released 7 years and 3 months late
Higher specification of memory (2666 vs 1333)
Higher base frequency (3.2GHz vs 2.4GHz)
More modern manufacturing process (14nm vs 32nm)
Lower TDP (65W vs 130W)