@pali - please, make it very clear on the first page that there is a new frequency scheme, so if one has /etc/default/kernel-power, or loads some custom profiles, he/she MUST modify them according to new frequencies, i.e to remove 700 and to change 750 to 720.

@fahadj2003 - it does not make sense to undervolt dsp profile, SR will do it for you anyway. By "undervolting" you just move SR start point, but at the end the resulting voltages will be the same AIUI.

EDIT:
When I have some spare time I will make a post here describing how latest KP works re CPU/DSP speeds.

For now please, all of you just try dsp profile without modifications. If it works for you DO NOT TOUCH IT, just make it your default power-on profile. It has all the CPU/DSP power and battery savings you need, even though max CPU frequency is 805.

If "stock" dsp profile does not work for you, then you can try to edit it, lowering DSP frequency for 805 from 600 to 520 and consequently lowering 720 and 805 DSP frequencies from 520 to 430, leaving SR enabled all the time.

And If it is still unstable please do the following:
1. find a profile that works for you (try with lv, it should work)
2. post here the contents of
/sys/cpuinfo
/sys/power/Efuse
/sys/power/idcode
3. Wait until I find why SR does not work stable an some devices . It is a shame for both TI and Nokia that SR is unstable on n900, it gives a huge amount of battery savings. So I will do my best to make it stable on all devices.