I have noticed differences with the 2xd box that I have. My framework as I stated in other posts is designed to offload as much as possible to tmp. right now I use the texture manager for grids only. My grid components know how to manage their own cache using the manager. So I always have a fixed number of images in memory at one time. Generally I have on average 10MB total in memory. I seldom go outside this and can still manage as many bitmaps as a particular grid may need
Tested on all current models enough to know that the memory is managed very well so far. Design has a lot to do with it. Sometimes you have no choice but to filter down. I don't have the extensive experience as yourself so I have not encountered as many problems. But producing what I did was by no means an easy task. But well worth it.