hi all just a question about physical memory cache i currently have 3 gig pc6400 ram 2x1gb + 2x512 running with a q6600 and i was checking my system performance with task manager and it states that i have 3 gig ram 2 gig of which is cached now no matter what i do ie - play a game convert a dvd and even tried converting 2 at same time as a test my memory usage never goes above 1.12 gb and cpu usage dosent go above 34% when converting 1 dvd and about 57% when doing 2 at same time but the ram usage dosent change with 1 or 2 at a time so what i want to know is this limiting the overall performance of my system and if so how do i change the cache size if nescessary any help would be great