RAM usage of MonetDB

Hi, I have been testing MonetDB for quite a while and I am a bit quizzed by its RAM utilisation. I tested MonetDB with some complex data and queries as per my requirement in 2 machines - *one with 16 GB RAM and the other with 128 GB RAM *with no memory restrictions for applications. There are no applications other than MySQL and MonetDB running in those machines. The puzzling part was *all the queries took the same time with both the machines*. I have read quite a few documentations wherein I found that the MonetDB performance heavily depends upon RAM memory available. What am I missing? Any help much appreciated. Thanks & Regards, Vijayakrishna.P. Mobile : (+91) 9500402305.