AMD Athlon64 qool'n quiet - how?

[Zoltan Kota]

Hi,

I have an AMD Athlon64 3200+ machine with Fedora Core 3 (x86_64). How
can I exploit the qool'n quiet feature of the processor? It doesn't
seem to decrease the speed. cpuspeed runs and the processor is
recognized as I see in /var/log/messages. (Although there are some
warning messages as well: "powernow-k8: vid trans failed, vid 0x3,
curr 0x4").
Motherboard: MSI K8N Neo2 Platinum

Zoltan