mezryn, also the P35 chipsets don't do well at 1T speeds, the Nvidia chipsets seem to be able to handle the 1T command rate, but intels chipsets don't gain much with it enabled, and few systems work correctly at that rate.

It can be a little misleading if you're coming from a DDR system as 1T makes a big difference in speed on the first gen DDR systems, but with DDR2 the gain has greatly diminished.