ati radeon ... ati radeon ... ati radeon ... what? 319 mb? numbers go 1, 2, 4, 8, 16, 32, 64, 128, 256, 512, 1024... i dont hear 319 directX is a graphic system, not a graphics card graphics card = hardware directX = software hardware does not = software
Correction-
You can take memory modules and combine them to make 'hybrid' memory.. if that's the word :S
Eg- 256+512= Nvidea 9 series (somthing or other) 768 mb card
Although i dont know how you got an ati 319mb =p maybe your card overheated and melted some memory.