Xeon E 2488 's Advantages
Higher base frequency (3.2GHz vs 2.1GHz)
Lower TDP (95W vs 500W)
Xeon 6979P 's Advantages
Released 9 months late
Higher specification of memory (8800 vs 4800)
Larger L3 cache size (504MB vs 24MB)
More modern manufacturing process (5nm vs 10nm)