how do I get my 2500k to go back to 1.6 at idle after overclocking?

[BonzaiDuck]

I have the latest bios. I guess its just something they were not concerned with at this level of mobo. oh well its just more reason to get a new mobo and Ivy Bridge cpu when summer gets here.

I'll lend a thumbs-up to that. I ALMOST got a P67 board just before the Z68 chipset release, and I'm glad I took the risk with the newer chipset.

You've described what seems to be limitations of your MSI mobo. As far as I understand, other motherboard brands with the P67 chipset don't have the same limitations. In other words, an ASUS P67 mobo roughly equivalent in (many) features to those of my -V-Pro Z68 board would provide the same over-clocking options (but only in "turbo" mode.)

But even if I fix the VCORE different from its default setting on an older LGA-775 system and give it a mild over-clock (e.g., from 3.2 to 3.6 Ghz), it will still implement EIST, C1E and other features correctly, so idle shows 1.8 Ghz. I THINK the voltage also responds accordingly . . . I should check again . . . But that's what I thought I observed. . . .

Did anyone suggest to Toyota that he might see if there are BIOS updates to that board? Familiar with the OP from other threads, I might have thought he would've looked into it.

As I understand it, for certain P67 and Z68 board equivalents from the same maker (ASUS in my case), "Turbo" over-clocking with VCORE="Auto" using the "Offset" and "Add'l voltage applied in 'turbo' mode" settings, and with EIST and C1E "Enabled," you would observe mostly the "loaded" (drooped) voltage during a stress-test. You may SEE -- after stopping the stress-test -- a "maximum" voltage representing the "idle" state (unloaded) at turbo-speed. Such would be an idle equivalent to using a fixed VCORE for over-clocking to a fixed speed (non-"turbo") with EIST/C1E "disabled" -- something some veteran OC'ers are more used to.

In BIOS, the idle VCORE (without EIST, etc.) would be displayed for the stock speed (non-turbo) under the conditions set by "Offset" (and the "add'l" voltage, if the mobo has such a setting). With the OS loaded, my "EIST" voltage is around 1.008V, my loaded "turbo" voltage will show something between 1.30 and 1.34V depending on how much the processor is loaded; and the "idle-in-turbo" voltage will show at something between 1.35 and 1.36V. Those latter values occur in split-seconds before returning to the 1.008V value.

In any case, I agree with others. You might lose $1/year addition to your power-bill. The voltages you show are in the "safe" range. And you can choose to "stand pat" or live with the existing board, or follow your inclinations whatever they are. Again -- you might see if BIOS updates add any options to your menus.

 

[MadScientist]

A reviewer of your MB on NE confirms that your MB does not have an Offset Vcore setting. "Only con is that there is no voltage offset feature, so the vcore will not throttle down when you do a large overclock. The multiplier goes down appropriately, but the vcore doesn't go down." It's no big deal if you are only at 1.230. My 2500K idles at ~1.03.

http://www.newegg.com/Product/Product.aspx?Item=13-130-582&SortField=0&SummaryType=0&Pagesize=10&PurchaseMark=&SelectedRating=-1&VideoOnlyMark=False&VendorMark=&IsFeedbackTab=true&Page=6#scrollFullInfo

 

[coffeejunkee]

Yup, no dynamic vcore on MSI boards. Why I don't know, doesn't seem like terribly hard to implement.

See if you can keep c3/c6 states enabled, that will keep idle use at normal levels even with fixed vcore. EIST/C1E multiplier lowering still helps a bit, but not as much as combined with lower vcore.

 

[Rvenger]

the voltage will continually go higher with higher clocks. that is why I elected not to do it that way.

It shouldn't. I believe mine maxed at 1.32v. MSI board won't exceed 1.35v since that is Intel spec. So 1.32v would be the max because that is including the vdroop.