bandwitch

Hi all, I have a few hd 5450s, and I was testing the performance of each one with a different vram size, Firstly, The 512mb card has two 256mb chips, 64 bit (10.8gb/s bandwidth gpuz) The 256mb card has one 256mb chip, 32 bit (5.4gb/s bandwidth gpuz) They both run at the same memory speed...