Traditionally, sodium pools of fast reactor systems are modeled in plant dynamics codes through single control volume or multi-zone approach. In order to consider thermal stratification effects, multi-dimensional modeling features are incorporated in many plant dynamics codes developed for pool type fast reactor systems. However, such an approach is not generally adopted for modeling of cold pool. Thermal hydraulic behavior of cold pool under plant transients is also equally influenced by thermal stratification effects similar to that in hot pool. System dynamics codes adopt multi-zone modeling approach for these studies. The performance of single and multi-zone modeling approaches adopted for cold pools in system dynamics codes have been analysed by comparing the predictions with respect to three dimensional model predictions. Two different events in the plant, viz., transient involving symmetric thermal hydraulic phenomenon in the whole cold pool and transient involving different thermal hydraulic phenomenon in different sectors of cold pool have been considered for this synthesis. It is observed that multi-zone approach has significant advantages over single control volume approach in predicting the thermal hydraulic phenomenon in cold pool closer to those predicted by three dimensional model during symmetric transients. However, the predictions of the multi-zone approach are neither conservative nor realistic during transients involving un-symmetric thermal hydraulic conditions in the cold pool. This study shows that depending on the nature of transient, a careful choice between multi-zone approach and three dimensional approach for modeling the cold pool has to be adopted.