EleanorD

A physics card is an expansion card for computers, which is used to process physics interactions so as to help produce more physical action in computer generated graphics. By taking over the processing of these effects, the CPU can use more of its power for other tasks. A physics card …

I too have a Dell Dimension 4500 with a failing graphics card. I contacted Dell with a view to replacing it and they advised that any AGP card with 64Mb or 128Mb would be suitable, but that the system board won't handle higher-memory cards in excess of 128Mb.