They still need to use numbers. But they could base the numbers on something other than clock speed. Call the first, slowest one the Ticonderoga 1.0. As long as they have the same architecture, faster ones should be faster, period, and definably so. So call the faster ones Ticonderoga 1.2, 2.6, etc., to define how fat they are in relation to each other. If and when they come up with a new architecture that no longer has a linear speed relationship with Ticonderoga, then give it a new name and start the numbering over. We're not usually given much choice as to which model to buy anyway. But we need to know which ones are faster without restoring to a chart.

I say all that as if you're part of Intel's marketing strategy. I just hate it when a range of products exists for the purpose of one specific definable trait and that trait's identity is hidden by marketing.