Intel Xeon D 1541 's Advantages
Released 5 years and 8 months late
Higher specification of memory (4 vs 3)
Newer PCIe version (3 vs 2)
Higher base frequency (2.1GHz vs 1.866GHz)
More modern manufacturing process (14nm vs 32nm)
Intel Xeon L5609 's Advantages
Larger L3 cache size (12MB vs 1.5MB)
Lower TDP (40W vs 45W)