Intel Xeon w3 2423 's Advantages
Released 12 years and 11 months late
Higher specification of memory (DDR5-4400 vs DDR3)
Newer PCIe version (5 vs 2)
Higher base frequency (2.1GHz vs 1.866GHz)
Larger L3 cache size (15MB vs 12MB)
More modern manufacturing process (10nm vs 32nm)
Intel Xeon L5609 's Advantages
Lower TDP (40W vs 120W)