Xeon X3430 's Advantages
Higher base frequency (2.4GHz vs 2.3GHz)
Lower TDP (95W vs 140W)
Intel Xeon W 2191B 's Advantages
Released 8 years and 3 months late
Higher specification of memory (2666 vs 1333)
Newer PCIe version (3 vs 2)
Larger L3 cache size (24.75MB vs 8MB)
More modern manufacturing process (14nm vs 45nm)