If there's a new iMac (which seems pretty darn likely), and it uses the IBM 750fx (Sahara), I found some official information about it.
Clockspeed: up to 1Ghz
System Bus: up to 200mhz (which means it should support DDR 2100 RAM)
Circuitry: .13 micron copper (it uses IBMs new silicon-on-insulator and low-k dielectric technologies).
Cache: 512k on chip L2 cache at processor speed
this is the results of a search for "750fx" that I ran on the IBM website. I got the info from numbers 4 and 5, but there's a lot more there.
That should end the debate about how fast the new iMac is going to be.
[Edited by Catfish_Man on 01-05-2002 at 10:13 PM]