I flashed this card about 5 months ago and although it works ok, It does not run@16X speed. I wanted to know if there is another rom that can address this issue. I have tried every slot in the Mac Pro in terms of slot placement, I have also used the expansion slot utility and nothing works. I also installed the same card with the original rom in my windows box running vista and it works at the corrects speed so I know its not the card. I have included the original rom that came with the card. I would appreciate any suggestions or help.