1 5 6 7 8 9 Previous Next 133 Replies Latest reply on May 7, 2012 4:01 AM by Flying_Kiwi Go to original post
      • 90. Re: DG45ID Irregular fan speed

        Reviews indicate far fewer problems with this board in corporate settings.  The only persistent problem remaining for me is from the repaired monitor.  Power cycles during sleep, causing warnings and errors.  I conclude that the firmware needs to be installed after assembly so I simply turn it off.  The vcr needed some transistors and diodes due to electrolyte damage (and a belt). It does great programmed recording now so my solder skills are confirmed.  Perhaps all hardware will be compatible when the OS and apps are no longer written with C++.  My knowledge of Unix systems is precisely level 1 so a comparison of dynamism is not possible.

        • 91. Re: DG45ID Irregular fan speed

          No matter how "old" this board is, they should still update the BIOS properly so that my machine will shut down well. I don't think this is too much to ask, considering I paid good money for intel hardware.    

          • 92. Re: DG45ID Irregular fan speed

            posix wrote:


            No matter how "old" this board is, they should still update the BIOS properly so that my machine will shut down well.

            What did Intel staff say about it when you reported the problem to their tech support dept? I concurr that it should be fixed. The idea of default BIOS settings resulting in such problems is ludicrous.

            • 93. Re: DG45ID Irregular fan speed

              The irony in all this is the fact that the BIOS for this mother board is the most basic and simplistic of any mother board that I own, no OCing capability, virtually no memory settings, yes it is a "Corporate Stable" mother board... or it ought to be.  Given that Intel makes the CPUs and Chipset used on this 'board, when it starts it's bad behavior, all I can think is how can this be?


              I've never experienced the phenomenon detailed in this thread on any other manufactures mother board, not that the others have no quirks, they do, but they just aren't as strange as this one is.  Enable C-States in the BIOS, and as the PC boots the inductors start buzzing and singing away, up and down but basically non-stop.  Later as I scan a web page, the CPU coolers fan just throttles wide open, you can't miss it, and all you can do is wonder, what happened, what happened?!


              Restart the PC, enter BIOS, disable C-States, poof, inductor noise gone, gone, and the CPU fan works as it should...  I've had some odd shutdown and sleep-wake up problems, but all my PCs have done that now and then, that doesn't bother me to much.  I'd really like to understand what really is going on when the strange things happen, but I'm sure I never will.

              • 94. Re: DG45ID Irregular fan speed

                Without getting into whether you changed brands or used an old PS as a replacement I suggest the problem lies there.  I had reflowed my solders after seeing the monitor blank a couple times, and the monitor was then matched with the PS I had originally suspected as my problem.  The sleep problems were worse than observed before.  Upon return to where I wan't the better (repaired) monitor, the problem is gone.  I have tried three brands of power supply and will no longer use those endorsed by GoodEnuf, even if it is on the approved list.  Any other sources of hardware conflicts are secondary.  C-State changes do nothing for me.  Also, ATX standards specify that they are backward compatible, but I am not spending $300 on new capabilities I can't use.  My protections are redundant on the 2 systems that have a UPS.  I am very unlikely to even inspect the problem PS.

                • 95. Re: DG45ID Irregular fan speed

                  I have been watching this Post since the begining , And I don't get it , I have two DG45ID sys and Have experinced None of these problems you have decribed, I guess I must have done something right in building them, Both use the Q9550 CPU , Both use 8GB DDR2-800 GSkil Ram, Both use 650 Seasonic PSUs. And run perfect all day long no weird fan prob they go to sleep I giggle the mouse they wake up , This is weired.

                  • 96. Re: DG45ID Irregular fan speed

                    Maybe it's because that I used a PSU with Active Power Factor Correction [99% PF Typical} , I have found with most PSUs that where you are supposed to have 12 volts , you don't you have 11.85 not 12, and this can cause all kinds of prob. Thats why I use Seasonic Gold Cert. PSUs.

                    • 97. Re: DG45ID Irregular fan speed

                      I certainly agree it is an odd phenomenon, but I definitely have experienced the inductor noise and CPU fan speed surging issues.  I use a Q8300 with my DG45ID with an after market PWM controlled CPU cooler, and recently changed to a Corsair HX750 PS.  The loading on it is light, no OCing of the CPU, I'm using the on-board graphics, only 4GB of RAM, Kingston or Corsair, one SSD and one HDD.  Hardware monitoring shows slightly over 12V on that rail, and the others are right on too.  I use all the latest BIOS and drivers.


                      Immediately after enabling C-States, the inductor noise starts, and thereafter the CPU fan speed nonsense starts.  Disabling C-States causes all that to stop.  Otherwise, the PC is perfectly stable.  What can I say?

                      • 98. Re: DG45ID Irregular fan speed

                        What caused badcapacitor.com to appear is not relevant to these boards.  That would be a logical cause of inductor symptoms.  My suspect supply is an Antec TruePower Trio 430, provided by Seasonic per Antec specs.  Antec primarily uses 2 suppliers.  It originally failed after adding an 8600GT.  Gigabyte recently returned it after testing, with no comment.  I like Seasonic specs but my unit may have had inadequate power, although there is no graphics card now.  Of my 3 Enermax units, two differ only in being modular vs non-modular.  As might be expected the non-modular unit has a higher 12V, near the top of ATX specs, and I suspect they have discontinued offering the same unit in both forms.  I prefer slightly high 12V since this will drop under load, such as with a graphics card.  Electronic components adapt to usage and any changes present a challenge that the supply must accomodate.  I have seen OS reinstall fix the oddest problems but a monitor swap should not cause problems.

                        • 99. Re: DG45ID Irregular fan speed

                          I seem to remember inductor issues with some cpu fans but the SSD is most likely the reason you need to disable C-states.

                          • 100. Re: DG45ID Irregular fan speed

                            Another DVI LCD monitor also failed to sleep but returning to the original VGA monitor, w VGA to DVI connector, does.  If reinstallation is required, I don't remember anyone mentioning this in the numerous posts about monitor problems.  The digital recognition did reset the resolution.  It would be some time before I reinstall since this computer is being used as a server where computer sleep is not appropriate.

                            • 101. Re: DG45ID Irregular fan speed

                              Curious592 wrote:


                              I seem to remember inductor issues with some cpu fans but the SSD is most likely the reason you need to disable C-states.


                              Oooh-Kay, and why would a SSD be the reason?  Would you care to explain that?

                              • 102. Re: DG45ID Irregular fan speed

                                Instability caused by irregular cooling of coils could cause the vibration but the C-states added to the BIOS should be for newer technologies such as a SSD which were primitive at the start of this board.  Admitted Flying Kiwi also sees problems and the tuner he has shouldn't cause problems.  The implementation of standards (if any) must not be quite right due to the independent power capabilities.  There is a whole separate section for SSD but I don't recall seeing any such discussion.  I don't expect to be adopting SSD very soon.  The states that can be implemented are limited by the power supply which likewise may not be backward compatible.  People have complained about supplies not being compatible with newer i series boards.  I doubt that but the SSD has very different requirements for power.  There would be less reason to power down but the various new states may provide for that as well.  Why some of these states appear for desktop systems at this time is beyond me.  I'm not sure what states the Corsair supports.

                                • 103. Re: DG45ID Irregular fan speed

                                  Hi everyone,


                                  I’ve really appreciated the knowledge that has been shared on this thread.  As a novice PC builder, I’m not sure how much I can offer here, but I thought I should document my experience as I have received so much help from the people in this discussion.


                                  I purchased a DG45ID motherboard (Rev. 307) in August 2008 when it first came out here, and coupled it with an E8400 processor.  From the very start, the board made a high-pitched ringing noise whenever the processor was idling in Windows.  I did not notice any fan speed irregularities, though.  Needing a computer straight away, and unwilling to spend time on the problem, I put the board aside and built a completely different system.


                                  Several days ago I decided to give the board another try, especially after reading on the BIOS release notes that the inductance noise problem had now been fixed.  I flashed the BIOS with the latest version (131), and ... alas – the noise was still there.  What’s more, the fan speed was now randomly ramping up and down.  Following the suggestion on this thread, I set the “CPU C States” option to “Disable” and both problems were eliminated.


                                  The board is running nicely now, but, like FlyingKiwi, one question still bothers me: how much extra power am I consuming by disabling C-states?  I hope to use this board for another few years, so I would really like some reassurance that I won’t be hit with big power bills.  I have tried to reassure myself with the following points:


                                  1.  The C1E option is still enabled, so there is at least some idle power management occurring.  The Intel BIOS glossary defines the “CPU C States” option as follows: “If enabled, BIOS will report C States below C1 to the operating system. This allows the processor to be placed into lower power states when idle to reduce power consumption and heat generation.”  So perhaps by disabling C states, one is only missing out on states C2 and deeper?


                                  2.  The “CPU C States” option is a standard feature of the BIOS on some gaming boards.  So if this option appears on these boards, perhaps Intel thinks the extra power consumption is not worth worrying about?


                                  3.  I read the article mentioned by FlyingKiwi which cites an 80% reduction in CPU power consumption achieved by entering the deep C states.  However, this is comparing the C-state power with the power of a processor working at full clock and maximum current.  I am puzzled as to why the article’s author uses this comparison to assess the idle power saving capabilities of the deep C states.  Surely it would be more appropriate to compare the power in a deep C state with the power in C1 state?


                                  I don’t know if these points ease anyone’s concerns about disabling CPU C states.  They won’t ease mine until I see some actual numbers comparing the power consumption of an E8x00 processor in C1E state versus power consumption in C2 state and deeper.  I suppose one way to find out would be to take a problem-free DG45ID motherboard and compare the idle power consumption of the system when the “CPU C State” option is Enabled or Disabled.  By the way, if anyone intends to try this, and does not have a BIOS version with the “CPU C State” option, I wouldn’t recommend updating to one that does, because then your board may no longer be problem-free!


                                  I reported my experience to Intel Technical Support.  I found them very helpful, and they assured me that disabling C states would not affect the longevity of the processor, but were unable to provide actual numbers on the extra power consumption.



                                  • 104. Re: DG45ID Irregular fan speed

                                    Hi stevec, Welcome to this forum!  It's great to see you've educated yourself about CPU C States, you don't see this topic discussed very much.  At the moment I'll just give you some general answers to your many detailed questions, or perhaps I should say some of my replies are my opinions.


                                    First of all, your Core 2 Duo E8400 is rated as a 65 Watt TDP processor, which is low relative to many desktop processors.  That is also a maximum value that you won't be close to most of the time.  The Core i7-9xx CPUs are rated at 130 Watts TDP, in contrast to yours.  Basically, you have a very good CPU that also is very power efficient.


                                    Your CPU has Enhanced Intel SpeedStep Technology (EIST) which is another power savings feature.  With EIST enabled, your CPU will be slowed down when at idle or low load, instead of running at 3GHz, it will run at 2GHz (I don't recall the exact speed when it is reduced, that is an example.)  If CPU demand increases, the speed immediately switches to normal speed.  Otherwise you'll save energy when EIST activates.  I use EIST on this mother board with no difficulties.


                                    With C-States enabled, either at the various levels you mentioned or just automatic, you would use less power.  How much, I do not know.  More or less than EIST, I don't know.  That also depends on how much your PC is idling.  With EIST, your CPU is still operating and can do work at the lower speed and will stay at that lower speed if it is enough.  C-States more drastically throttle back and eventually shut the CPU down, as you have read, depending upon the C-state.  If your PC sits at idle for long periods, C-States would save power.  If it doesn't, then C-States are not activated much if at all.


                                    Perhaps someone else has some data on the power savings you are looking for, but I don't have any to offer you.  Given your low power use CPU, using EIST and C-States (which is fine) would be the best power savings.  How much you waste not using C-States, I don't know, but I don't think it would be more than say 10 Watts at idle, which is the only time C-States would activate.

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