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Thread: GA P35C-DS3R bios and no overclock holding




  1. #1
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    Default GA P35C-DS3R bios and no overclock holding

    First off I'd like to apologise for the long read, I can't see any way of making it shorter whilst still making my problem clear.

    Last week the memory on my ati 3870 died, so this week I replaced it with a 4670. The problem is that since I've put this 4670 in my cpu overclock doesn't work any more. I'd just like to make it clear that this overclock has been working fine without issue for the last 6 months, so I'm 100% sure the problem I'm having is not related to it.

    I'm putting in the same settings as I did before but now as soon as I save the bios, the pc restarts, gets to the memory count bit and restarts again back at default clocks.

    I've done a bit more investigating and the even weirder thing is that if if I leave everything at stock, but change the cpu host clock control to manual but leave it at the stock FSB it will still restart itself and clear the settings as described above. If I go back into the bios I can see that cpu host control has changed from manual back to auto.

    Now I've had a read of this forum and I've seen it recommended to pull the power cord, hit the power button to discharge the psu and to leave a jumper on the cmon clear pins for a good 10 minutes. I tried this yesterday morning and it worked, my overclock kicked back in and I could restart and shutdown the machine without it losing the settings. As sods law would have it when I did a quick restart before bed last night to check that it was still working it restarted itself during the memory count bit and reverted back to stock settings. I've also made sure I had legacy usb device support disabled.

    I tried leaving the cmos in the clear position again as described above, but this time I left it over night, and it won't remember the overclocks at all this morning. It's behaving in exactly the same way as before, even if i just change the cpu host clock control to manual it'll restart itself during the memory check and stick it back to auto.

    My specs:

    e6300
    GA P35C-DS3R (running f12e, upgraded from f8)
    4670
    2gb x 2 DDR2 patriot memory
    x-fi fatality
    edit: Antec Trio 650 watt psu

    It might be worth adding that I was having this problem with the f8 bios, so I upgraded to f12e to see if it fixed it. It's still behaving exactly the same.

    Thanks for taking the time to read this, I really appreciate it. Seems like a good community here and I'm really desperate for some help. Anything anyone can advise would be greatly appreciated.
    Last edited by z0mbi3; 11-28-2008 at 05:27 PM.

  2. #2

    Default Re: GA P35C-DS3R bios and no overclock holding

    i think you meant 4870 ...
    first i read few place that some mother board have strange effect on the newer video card.
    also the new video card require more voltage ... make sure your PSU support it ... it need like 20A .. some thing like that ... and some older PSU can't handle it.
    your mother board any problem with voltage will revert back to auto .. that is normal.

    but for now .. check your PSU make sure it can handle the new card.

  3. #3
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    Default Re: GA P35C-DS3R bios and no overclock holding

    I definitely mean 4670. The 3870 actually had higher power requirements than the 4670 I replaced it with. Apologies for not including it in my original post, but my PSU is a Antec Trio 650 watt with three 12v+ rails and is more than capable of powering this card.
    Last edited by z0mbi3; 11-28-2008 at 05:24 PM.

  4. #4
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    Default Re: GA P35C-DS3R bios and no overclock holding

    Firstly I don't like the F12e bios and are still using the F11 bios. However, did you complete the bios update by:-

    1) Loading up the optimised Defaults (in the bios's first screen)
    2) Save
    3) Reboot
    4) Re-enter the bios to set up your own personal specifics (such as raid/ahci etc)

    Edit: Don't use @Bios btw, use QFlash or the Dos boot disk method.
    Edit 2: F11 has now been pulled from the Gigabyte site but is still available.
    GA-P35C-DS3R Rev2.0 F11 bios, E8200 (@3.0Ghz), OCZ DDR3 PC3-10666 Reaper 4GB (@1200Mhz), Xonar D1, 8800GTS 512, Corsair HX520 (Single 12volt line, Max 40A), WDC 3200aaks/5000aaks in AHCI mode, Vista 64 Premium.

  5. #5
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    Default Re: GA P35C-DS3R bios and no overclock holding

    I used qflash and I made sure I read the sticky on bios flashing before doing so. I did everything with regards to loading optimised defaults and saving before putting any of my custom settings in.

    Just to clarify I was running f8 up until 2 days ago, so this problem started before I updated the bios.

  6. #6
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    Default Re: GA P35C-DS3R bios and no overclock holding

    Before you changed your Graphics card, did you always leave the PC on? It could be a coincedence that that a problem with overclocking has now showed, Or, your last overclock was on the threshold of stability and perhaps a change in loading on the board by your new card, has altered overall stability.

    You say it won't hold the same overclock as before, but what happens if you back that off a bit, or relax the memory timings etc.

    What was the Overclock, your FSB and Memory multiplier. Where you running the memory on Auto (ie SPD's values). Have you changed any of the voltages?
    GA-P35C-DS3R Rev2.0 F11 bios, E8200 (@3.0Ghz), OCZ DDR3 PC3-10666 Reaper 4GB (@1200Mhz), Xonar D1, 8800GTS 512, Corsair HX520 (Single 12volt line, Max 40A), WDC 3200aaks/5000aaks in AHCI mode, Vista 64 Premium.

  7. #7
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    Default Re: GA P35C-DS3R bios and no overclock holding

    The PC was turned off pretty much every night for the last 6 months or so.

    Just to point out this bit again from my original post:

    Quote Originally Posted by z0mbi3 View Post
    I've done a bit more investigating and the even weirder thing is that if if I leave everything at stock, but change the cpu host clock control to manual but leave it at the stock FSB it will still restart itself and clear the settings as described above. If I go back into the bios I can see that cpu host control has changed from manual back to auto.
    Basically I can pretty much change every other setting, including overclocking the memory by adjusting the ratios and the system will boot fine. As soon as I set the cpu clock from auto to manual it will restart and change that setting back to auto. Auto at 266 fsb works, but manual at 266 fsb restarts at the memory check and sets itself back to auto.

    So just to be clear if I clear the cmos, go into the bios and flick that setting to manual and save, then the system will restart during the memory check and when I go into the bios to check that setting will be back to auto.

    The overclock is not at fault here, the system is behaving as described previously with no overclock whatsoever.
    Last edited by z0mbi3; 11-29-2008 at 01:03 AM.

  8. #8
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    Default Re: GA P35C-DS3R bios and no overclock holding

    You don't say (unless I've missed it), what you are running your DDR at, what it's rated at etc or if you are using a manual Memory multiplier or Auto.

    For 4GB, you should haave the folowing set to:-

    1) Performance Enhance = Standard
    2) tRFC = 56

    What is the voltage rating of your Ram?

    Ideally you could do with filling out the P35 template with your settings, so others can see your exact setup. The template can be found on this forum, but the Moderator (when he's on) should be able to supply you with it.

    Like I said before though, either you have a bug in the flashing of the bios (but you said you had the problem before flashing - so that could be ruled out).
    You don't say though that when you were running a higher FSB (for your previous overclock) what memory multiplier you used, what voltage you ran the memory at and what effective frequency both the cPU and memory were running at.
    The bios defaults back to Auto when it encounters a problem at POST. Very often this is when memory is highly overclocked and/or has tight timings, or is faulty.
    Maybe now, your memory is not running even at stock - either possibly because there has been some degradation or there is a faulty module.

    Auto can be Defaulted to Globally even when there is a problem in another subsection.
    You could prove a lot more by Underclocking and/or checking with memtest when it does boot.
    GA-P35C-DS3R Rev2.0 F11 bios, E8200 (@3.0Ghz), OCZ DDR3 PC3-10666 Reaper 4GB (@1200Mhz), Xonar D1, 8800GTS 512, Corsair HX520 (Single 12volt line, Max 40A), WDC 3200aaks/5000aaks in AHCI mode, Vista 64 Premium.

  9. #9
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    Default Re: GA P35C-DS3R bios and no overclock holding

    It's pointless going on about it but my DDR2 is running at stock clocks at 800 mhz and performance enhance is at standard. It's entirely irrelevant though as after a cmos reset if it at default (i.e. turbo) then it works fine. I can even overclockthe memory and it'll work fine. The only setting that makes the bios reset itself is cpu host freq if I set it to manual. At auto it works fine, but if I set it to manual and just leave it at the stock speed it was already at when set to auto then it crashes.

    Anyway I have had some half way success with this tonight, I'll post back later and let you know what I did. Trouble is I don't want to speak to soon incase it's not done the job.
    Last edited by z0mbi3; 11-29-2008 at 08:12 AM.

  10. #10
    Lsdmeasap's Avatar
    Lsdmeasap is offline GIGABYTE Guru
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    Default Re: GA P35C-DS3R bios and no overclock holding

    Try adding PCIE voltage to +0.1-0.2 and see if that fixes it. If not, your board may just not work well with the new card, it does sometimes happen

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