Abstract— Compressors are known as a key processing elements to accumulate and reduce partial products in a parallel manner in multipliers. This paper conducts a comprehensive analysis and comparison between two high-order (8:2) and (8:3) compressors based on Carbon Nanotube Field Effect Transistor (CNFET) technology. Furthermore, two well-known Full-Adder (FA) are also employed within the cells to analyse and compared for speed, power consumption, and power-delay product at transistor-level.