I have recently purchased 8gb of 800mhz ram for my mac pro. The mac pro is about 5 months old. I took out the 667mhz ram completely. In the About this mac displays that the ram is running at 667mhz and not 800. I assumed that if I removed all traces of the slower ram the bios would recognize the faster ram. Is the ram really running at the faster speed or have I just payed extra for not good reason? any help would be most appreciated.