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B250 mb,i7 7700k stay at stock speed with low voltage, is that possible?

I have a Cooler master hyper 412s, what fan do they use, i can't find one so i can use it in push pull.

I have an i7 7700k and don't need more power than it has at stock speed, it has alot more power than the i7 7700 non k so it makes sense to buy the 7700k over the i7 7700 non k.

Don't need to oc,sli or raid so i have an Msi B250M mb.

What im extremly surprised about is that it seems i can't lower vcore Msi bios

I can run it at 1.135 volt at 4.5 ghz (different mb and brand) but stock or 4.4ghz (it runs that most of the time) it's something like 1.160-1.176 volt and CPU IO voltage and CPU PLL overvoltage lowered 0.010volt make it run at 1.200 volt without c state enabled (eist/speedstep always disabled) . WHY?

Another thing is that it seems i can't get it to stay at 4.4ghz or between 4.2ghz as a minimum and 4.5ghz as maximum, it sometimes goes down til 800mhz but stays at 4.4ghz most of the time when i have enabled the lowest,most subtle c-state C0.

My reason for going matx was to get a smaller pc but also better airflow not a closed pc (silent case), 6½ hours later same temps horrible cable management (didn't look good), i put it back in my define r5 a few min later and sent the maxt case back today.

Stay at stock speed 4.2ghz and turbo at 4.5ghz with low voltage, is that possible?
Reply to gasolin
3 answers Last reply Best Answer
More about b250 7700k stay stock speed low voltage
  1. If you want it to run at max clocks constantly, select the High Performance Windows power plan. But it's normal for a CPU to downclock at idle, why do you want it to run at 4.2-4.5 GHz all the time?

    Regarding the voltage, it's possible that the Vcore settings aren't truly implemented given that it's a B250 mobo.
    Don't think messing with the CPI IO or PLL voltages are beneficial. What's your load line calibration setting?
    Reply to TJ Hooker
  2. I just want to make it run at max power al the time and make the bios lower vcore instead of ghz (the speed of my cpu) which it does when c-state C0 is activated with eist,speedstep disabled.

    Just sometimes it goes down to 800mhz despite eist,speedstep being disabled and thinking why it does so, c-state is only for vcore not ghz,cpu speed, that is eist,speedstep used for

    I feel 1.60 volt at low cpu usage is to much compared to 4.5ghz on all core all the time at 1.130/1.135volt with my old mb

    CLL is on aut, theres only 2 settings, the other is mode 1 and is for oc, that must be if you want to run a cpu at turbo speed on all core and be 100% stable
    Reply to gasolin
  3. Best answer
    From what I know, Speedstep/EIST are hardware based power management functions that can ramp clock speed up or down as required. There is still OS level power management, hence what I said about changing the power plan. Again, I'll reiterate that for most people there is no benefit to running at max clocks all the time, your Windows & your CPU are pretty good at ramping up clock speed as needed.

    I'm not sure if I understand the rest. Are you saying that if you lower Vcore below 1.16V your CPU isn't stable? Or are you saying that lowering the Vcore setting in the BIOS on your new mobo doesn't seem to lower the actual Vcore voltage?

    As far as I know, automatic power saving features (i.e. c-states and p-states) involve adjusting voltage and frequency in tandem. In which case, if you keep frequency at max, voltage will stay at max too.

    To be honest, I don't really know what the problem is here. If you want to run your CPU at 4.2+ GHz all the time, there's not really any issue if the voltage stays at 1.16V. Alternatively, just allow the various power management utilities to ramp voltage and frequency up and down as needed.
    Reply to TJ Hooker
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