If anyone out there hasn't read this they should. It's a comparison of DDR L3 Cache to SDR L3 Cache. http://www.powerlogix.com/downloads/SDRDDR.pdf This exemplifies what i've thought all along. What I mean is it doesn't matter if the System Bus in the new Macs is Double Data Rate or not it will not help it because DDR for all normal purposes is not any faster. Where DDR will help is with Direct Memory Access to from Memory from the ATA, PCI, and AGP busses. We already have that so what we need now is a faster CPU. Everyone be happy with the new Macs there will be noticeable speed differences in real world use in graphics processing etc..