The current research compares the processing influence of Spark plasma sintering (SPS) over conventional sintering on aluminium alloy AA2219 - MWCNT composites. Also investigations on the effect of MWCNT content on the properties of composite are presented and discussed. Though un reinforced matrix processed under SPS showed 24.68% improvement in hardness over conventional, the same could not be realized in reinforced one due to poor bonding between the matrix and reinforcement. CNT clustering hinders proper densification during sintering and results in poor hardness; hence reinforced samples don't have a drastic change in hardness with respect to process variation. © 2006-2017 Asian Research Publishing Network (ARPN). All rights reserved.