Xeon X5355 's Advantages
Higher specification of memory (DDR3
Depends on motherboard vs DDR3)
Intel Xeon E3 1535M v5 's Advantages
Released 8 years and 11 months late
Higher base frequency (2.9GHz vs 2.667GHz)
More modern manufacturing process (14nm vs 65nm)
Lower TDP (45W vs 120W)