Here is patch I have used with my Barton moded to mobile. I was
succesful at using multiplicators such as 5, 6, 7, 8, 9 and 10.5. I have
a little bit of trouble with 3, 4 and 11.
Patch is writen by member of this list, and I just can't recall his
name. Maybe you could look back in october/november mails to find out.

You must compile it as a module and load it with line similar to this:

modprobe powernow-k7 overwrite_table=1 multiplier=50,60,70,80,90,105
switch_latency=650

Try chinging switch_latency. I give you no worranty to your hardware :D


Patch is attached. I think it was writen for 2.6.7, but I've used it on
2.6.8 and 2.6.9 as well (manual patching). As powernow-k7.c differs from
kernel to kernel you will porbably have to insert those lines manualy
where they belong: