OC'd + Speedstep

[bfdd]

Who else did this to try and extend the life of the CPU during normal useage? That's the main reason I left mine on.

 

[VirtualLarry]

Originally posted by: Conjugal Visit
I use both EIST and C1E. In fact, I've remained with the F2 bios on my board because it allows the board to be undervolted in conjunction with a reduction in the multiplier. Meaning, more recent bios versions will do the multiplier reduction, but VID and voltage does not drop. I'm not sure I see the point of reducing the multiplier without a commensurate reduction in voltage.

My normal VID is 1.28750. With EIST and C1E enabled, and using the F2 bios, VID drops to 1.0750. What this means in CPU-Z:

CPU active - 1.312V
CPU idle - 0.963v

Enabling C1E and EIST is totally stable on my rig, no matter where I set the overclock or what vcore and vdimm voltages I use. To me, it makes perfect sense to utilize these things - why would anyone want to O/C their rig, pumping up FSB and voltages, so it can run at those settings at idle? Cost...heat...longevity to sit overclocked at idle? Overclock setting are "restored" almost instantaneously. I've done various benchmarks to see if I can find lag when C1E and EIST are on or off, and I can't see any measurable difference.

Regards,

What mobo do you have?

 

[paul81]

Hey, i thought i'd post in this thread, instead of making a new one, as its related to what I want to ask.
When using speedstep, is it possible to drop the multiplier lower than 6x or so (say 4x)? Just i'm thinking of buying a q6600, which i would like to overclock for playing games, but i'm also quite conscious about elec consumption and heat, so would like to drop below stock-speeds when idle (probably using Asus P5K-E mobo, but open to suggestions).

Also, what is the difference between EIST and C1E? I acknowledge they are both powersaving features, but how to they differ? Sorry for the noob questions, but i have been out the loop for ages on these things. I haven't built a high-endish computer for 5/6 years now, opting for running quiet, low power systems. My current (and fastest!) computer is Sempron 3000, with on-board graphics, which uses about 40w when idle. But because I used to be a keen Total Annihilation player I'm not sure I can resist SupCom much longer! Wouldn't mind giving one of the last 3 generations of Call of Duty a try either. I'm aware that any system I build will use far more than 40w, I just wanted to minimize the power usage as much as I could.

Thanks,

paul

 

[BakaTsuchiro]

My E6750 has C1E and EIST on the time

3.4GHz OC with 1.375v on load, 2.5GHz 1.16v on idle.

Works fine but doesnt save that much power probably saves only around 15-25watt

 

[GundamF91]

The multiplier is locked on all C2D within a range, for example, E4500 has 6x min and 11x max. you can do anything in between, but not exceed these. I'm back to using EIST now, but not C1E. I use RightMark Clock utility to control it rather than using C1E. With RMclock, I can set a condition for when it downclocks or upclocks. I have system set up as 275 FSB, so normal use is 10x using only 1.275v, it gets me 2.75Ghz. If CPU use is high, it'll go to 11x, and give me 3.0Ghz at 1.32v. This way the CPU runs real cool, only about 20c during idle. If I need computer running something overnight and not too intensive, I can set it for 6x to get me 1.65Ghz at only 1.17v Vcore. This saves power and also the board and CPU when I dont' need to run fullspeed.

I think we all want to crank it up, like revving car's engine, but the fact is that once you know how fast you can go, you don't need to be revving the engine all the time. It's prudent to conserve power and electricity to downclock.

 

[heyheybooboo]

Anybody compared Rightmark with CrystalCPUID for multi/voltage control??

 

[noobish]

probelm is.. my volt / clock jump up and down every seconds even when im not doing jack.

 

[Regalk]

Originally posted by: noobish
probelm is.. my volt / clock jump up and down every seconds even when im not doing jack.

Thas because you have too many resident programs/utilities running e.g. norton, limewire, and stuff like that