Anyone run an overclocked board with speedstep to lower idle power consumption?

[virtualrain]

I know the first thing most overclockers disable is C1E and EIST in BIOS...

I'm curious if it's possible to use speed-step or something similar to run an overclocked quad at x6 multi when idle and have it ramp up to x9 at load. Assuming you had overclocked your FSB to 400MHz, you would be running at 2.4GHz at idle and 3.6GHz under load...

Is this possible? Does it work well? Is anyone doing this? If not, why not?

What's the correct BIOS or OS settings you need enabled to do this without screwing up your overclock?

[dekruyter]

You can leave C1E on on many boards; and it can throttle temps/voltage nicely.

I personally have found the OS to be choppy though. What I mean, when the cpu jumps from low to high, and back to low, it make some windows apps. hesitate.

It's ok, but I prefer to leave things overclocked 24/7.

[Emerica]

I've heard that the reasons overclockers disable the speedstep is because it can potentially caused stability problems. You can enable C1E and EIST and see for yourself if it is stable. But what you described is exxactly what speedstep does. It lowers your multiplier but keeps your FSB the same according to the load on the processor. I don't use it because my CPU runs at 100% 24/7 anyway.

[graysky]

I have an o/c'ed q6600 with all the power savings options enabled (9x333). It's actually unclear to me if C1E does anything when you manually set the vcore... as to the speedstep question, I have no problems with it since I set my vcore for a full load @ 9x333. Technically, I'm wasting vcore @ 6x333 but whatever; if I leave the board to an auto vcore setting it over estimates what is actually required.

My system is rock solid running 9x333 @ 1.2625V (BIOS) with all the power saving options enabled.

[Blauhung]

Normally I run my X6800 at 400X9 with both on, works like a charm (I don't know if C1E is working though, might have to look at that). It's mostly just a matter of how well the BIOS supports it. Many of the overclocking boards didn't set the features up to be stable while overclocked, but some do.

[ziddey]

I run with c1e on as well. My asus p5b only had fid manipulation though, so power savings weren't that great.

On my dfi p965 and abit ip35e, it drops the voltage as well. Results in nice figures as measured by my killawatt at idle. Gives my watercooling fans to run much slower almost all the time too due to less heat being generated. Of course long durations of full load would have the same outcome, but in normal usage, it's great, especially since electricity isn't included in my lease.

[m3nf]

I have it disable to over clock itself, once set and happy with the OC i then re enable it again, i running a e6700 @ 3.65 with it enabled, no issues at all :)

[vengance_01]

I run it with my Abit Quad GT board and Q6600. run 333x9 and have CE1 and speed step enabled in my bios.