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Thread: Running 8 GB of RAMs with EP45-DS3R




  1. #181
    Chike is offline Senior Member
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    Default Re: Running 8 GB of RAMs with EP45-DS3R

    Try some more then, you can go up to 1.3625v with no fear and after that with some fear

  2. #182
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    Default Re: Running 8 GB of RAMs with EP45-DS3R

    Can you be more specific? Should I just go directly near 1.36? Are we're talking about 3.55GHz? 2.00D, I assume? What references? CPU ref auto? What about MCH ref? What tRD? What PLL/VTT? I told you those VCore voltages with 10 tRD at 888MHz and even then I couldn't read it in my first boot.

  3. #183
    Chike is offline Senior Member
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    Default Re: Running 8 GB of RAMs with EP45-DS3R

    Quote Originally Posted by Prequel View Post
    Can you be more specific? Should I just go directly near 1.36? Are we're talking about 3.55GHz? 2.00D, I assume? What references? CPU ref auto? What about MCH ref? What tRD? What PLL/VTT? I told you those VCore voltages with 10 tRD at 888MHz and even then I couldn't read it in my first boot.
    What were your last stable settings for 3.2HGz, start from there, no need to change much, mainly vcore and maybe VTT.

    References as they are more or less the same @ 1.2 VTT, once you found stable settings.

    SMM 2.00D/B tRD 9-10 or or 2.40B tRD 8-9.

    PLL as it was.

    VTT 1.2-1.26, see if it make any change at all.

    vcore you may just try 1.3625 though it may not be needed

    Try to work up in steps, 100MHz each time, once it become a bit unstable it's easier to find the right adjustments than when it's totally unstable.

  4. #184
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    Default Re: Running 8 GB of RAMs with EP45-DS3R

    Alright.

    1- 425 FSB | 2.40B | 1.33750V VCore | Auto VTT | 0.785V CPU Ref | 9 tRD = BSOD
    2- 444 FSB | 2.40B | 1.35000V VCore | 1.24 VTT | 0.785V CPU Ref | 9 tRD = All Programs Crash
    3- 444 FSB | 2.00D | 1.35625V VCore | 1.24 VTT | 0.785V CPU Ref | 9 tRD = BSOD
    4- 444 FSB | 2.00D | 1.36250V VCore | 1.26 VTT | 0.783V CPU Ref | 9 tRD = BSOD
    5- 425 FSB | 2.00D | 1.36250V VCore | 1.26 VTT | 0.783V CPU Ref | 9 tRD = 1 Hour+ Saints Row, No Problems.
    6- 430 FSB | 2.40B | 1.36250V VCore | 1.26 VTT | 0.783V CPU Ref | 9 tRD = 1 Hour+ on Desktop, No Issues Yet.

    Tough with #5 & #6 CPU Ref shown in Easy Tune is 0.745V. I don't know why. I am sure it is set to 0.783V on BIOS.
    At 1.36250V, VCore is between 1.280-1.296V on load according to CPU-Z and HWINFO. I don't know if this is normal.

    Now what? :)

  5. #185
    Chike is offline Senior Member
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    Default Re: Running 8 GB of RAMs with EP45-DS3R

    Quote Originally Posted by Prequel View Post
    Alright.

    1- 425 FSB | 2.40B | 1.33750V VCore | Auto VTT | 0.785V CPU Ref | 9 tRD = BSOD
    2- 444 FSB | 2.40B | 1.35000V VCore | 1.24 VTT | 0.785V CPU Ref | 9 tRD = All Programs Crash
    3- 444 FSB | 2.00D | 1.35625V VCore | 1.24 VTT | 0.785V CPU Ref | 9 tRD = BSOD
    4- 444 FSB | 2.00D | 1.36250V VCore | 1.26 VTT | 0.783V CPU Ref | 9 tRD = BSOD
    5- 425 FSB | 2.00D | 1.36250V VCore | 1.26 VTT | 0.783V CPU Ref | 9 tRD = 1 Hour+ Saints Row, No Problems.
    6- 430 FSB | 2.40B | 1.36250V VCore | 1.26 VTT | 0.783V CPU Ref | 9 tRD = 1 Hour+ on Desktop, No Issues Yet.
    There is absolutely no pint to go to 444MHz if you cannot run 425MHZ.


    Quote Originally Posted by Prequel
    Tough with #5 & #6 CPU Ref shown in Easy Tune is 0.745V. I don't know why. I am sure it is set to 0.783V on BIOS.
    At 1.36250V, VCore is between 1.280-1.296V on load according to CPU-Z and HWINFO. I don't know if this is normal.

    Now what? :)
    As I have explained before, the references are percent of VTT, do not ever change them at any other VTT value other than 1.2V.
    They will scale as you increase VTT, do not attempt to alter them afterwards.
    e.g.
    0.785 @ 1.2v VTT is 65.41% of VTT
    0.785 @ 1.24v VTT is 63.3% of VTT
    .783 @ 1.26v VTT is 62.14% of VTT
    64.14% of 1.2v is 0.745 which is what you see in EasyTune, as I have mentioned it before EasyTune ALWAYS shows the references values @ 1.2v VTT regardless of what VTT is set for.
    Without touching CPU ref when it is 0.785 @ 1.2v VTT, it should be around 0.824 @ 1.26v VTT.

    Is 0.785v CPU ref @ 1.2v VTT is the one found to be most stable?

    There is no way to tell which of the values you have changed made the difference, or is optimal (as can be). It can be VTT or CPU Ref or both, or maybe you have changed one that didn't need to be changed or not at optimal value.
    You need a more consistent method:
    A:
    425 FSB | 2.40B | 1.36250V VCore | 1.20v VTT | 0.785V CPU Ref @ 1.2VTT | 9 tRD
    425 FSB | 2.40B | 1.36250V VCore | 1.22v VTT | 0.785V CPU Ref @ 1.2VTT | 9 tRD
    425 FSB | 2.40B | 1.36250V VCore | 1.24v VTT | 0.785V CPU Ref @ 1.2VTT | 9 tRD
    425 FSB | 2.40B | 1.36250V VCore | 1.26v VTT | 0.785V CPU Ref @ 1.2VTT | 9 tRD

    B:
    If none work/unstable, try one tick up CPU ref and repeat A. Repeat this step up to 3 times if doesn't work/unstable.

    C:
    Same as B but down, starting one tick below 0.785V.

    As the above should cover what you have now (aside SMM) I'm sure one of them will work, but if not, try the whole thing with SMM 2.00D.
    Consistency and accuracy are also keys to successful OC if at all possible.

  6. #186
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    Default Re: Running 8 GB of RAMs with EP45-DS3R

    So at 1.24 or 1.26 VTT 0.8xx or more CPU Ref isn't too much? What if it reaches to 0.9xx or 1.xxx? How do I know what is too high? How about I set CPU Ref to auto to get rid of this distraction?

    I'm trying to do this as fast as possible. Your method can take a lot of time. I think there's enough information to guess.

    What are you trying to find anyway? Can one single voltage have effect on an OC and that its effects lasts?

    Say I found X to be the reason of successful OC. Say I reached 3.4GHz with optimal voltages. When I go 3.6 how can that stay the same? I will have to do the same thing all over again. If you geniuenely think there is one single voltage that when I find it will allow me to go to directly 3.8 or something, OK. But otherwise why waste time? My point is to get stable OC at highest frequency as possbile. When I reach that I can lower voltages to see if I can do without some of them.

    For example if I went by your method it'd take me tens of tries to see the need to go 1.36250V VCore.

    You can just make a guess from this. And if my choice of CPU Ref is so wrong here, I can probably get 3.6GHz stable by fixing it.

  7. #187
    Chike is offline Senior Member
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    Default Re: Running 8 GB of RAMs with EP45-DS3R

    Quote Originally Posted by Prequel View Post
    So at 1.24 or 1.26 VTT 0.8xx or more CPU Ref isn't too much? What if it reaches to 0.9xx or 1.xxx? How do I know what is too high? How about I set CPU Ref to auto to get rid of this distraction?
    As their name suggests, references are just that, a reference value, they are used to synchronize the data transfer between the CPU and MCH..
    Any value refer to them that is above the reference is "1" anything below is "0".
    There is not "too high" in the sense of harmful, just unstable.
    Please read Understanding GTL Reference Voltage, it's a lot of reading but make what references are clear.


    Quote Originally Posted by Prequel
    I'm trying to do this as fast as possible. Your method can take a lot of time. I think there's enough information to guess.
    Haste is evil. We are trying to guess accurately.

    Quote Originally Posted by Prequel
    What are you trying to find anyway? Can one single voltage have effect on an OC and that its effects lasts?
    Yes, or maybe more than one, but we try to find which. And as it goes to references they should not change or change very little, so finding the best reference will help further OC.

    Quote Originally Posted by Prequel
    ]Say I found X to be the reason of successful OC. Say I reached 3.4GHz with optimal voltages. When I go 3.6 how can that stay the same? I will have to do the same thing all over again. If you geniuenely think there is one single voltage that when I find it will allow me to go to directly 3.8 or something, OK. But otherwise why waste time? My point is to get stable OC at highest frequency as possbile. When I reach that I can lower voltages to see if I can do without some of them.

    For example if I went by your method it'd take me tens of tries to see the need to go 1.36250V VCore.

    You can just make a guess from this. And if my choice of CPU Ref is so wrong here, I can probably get 3.6GHz stable by fixing it.
    As you go up the main value you will have to change, if all others are right is vcore, secont will be VTT, and refernces should stay the same or be on up or down.
    You ask me "what's next" how should I be able to tell if there is no past knowledge of all of the settings.
    If you have randomly changed a previous reference value how would you know it's for good or bad.
    Whatever start pint you choose you will have to go through this process at least once, ,to make more educated guesses for higher OC.

    Maybe all that made a change is the vcore and you did not have to touch anything else? There is no way telling since you have changed 4 different settings (VTT, CPU Ref, SMM, and vcore). Want to guess all of them again when you move up to 444?

    There are still the clock skews we haven't touched yet. Most do not touch those though they may be essential for better OC, an may help maintain lower VTT

  8. #188
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    Default Re: Running 8 GB of RAMs with EP45-DS3R

    OK,

    425 FSB | 2.40B | 1.36250V VCore | 1.20v VTT | 0.785V CPU Ref @ 1.2VTT | 9 tRD = Seems stable

    444 FSB | 2.40B | 1.36250V VCore | 1.20-1-22-1.24-1.26v VTT | 0.785V CPU Ref @ 1.2VTT | 9 tRD = Programs crash
    444 FSB | 2.40B | 1.36250V VCore | 1.20-1.26v VTT | 0.800V CPU Ref @ 1.2VTT | 9 tRD = Programs crash
    444 FSB | 2.40B | 1.36250V VCore | 1.26v VTT | 0.815V CPU Ref @ 1.2VTT | 9 tRD = Programs crash
    444 FSB | 2.40B | 1.36250V VCore | 1.26v VTT | 0.830V CPU Ref @ 1.2VTT | 9 tRD = Programs crash
    444 FSB | 2.00D | 1.36250V VCore | 1.26v VTT | 0.830V CPU Ref @ 1.2VTT | 9 tRD = Programs crash

    433 FSB | 2.40B | 1.36250V VCore | 1.20v VTT | 0.785V CPU Ref @ 1.2VTT | 9 tRD = Seems stable

    Now can I say "and now"? Should I increase CPU Ref even more than .830?

  9. #189
    Chike is offline Senior Member
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    Default Re: Running 8 GB of RAMs with EP45-DS3R

    Quote Originally Posted by Prequel View Post
    OK,

    425 FSB | 2.40B | 1.36250V VCore | 1.20v VTT | 0.785V CPU Ref @ 1.2VTT | 9 tRD = Seems stable

    444 FSB | 2.40B | 1.36250V VCore | 1.20-1-22-1.24-1.26v VTT | 0.785V CPU Ref @ 1.2VTT | 9 tRD = Programs crash
    444 FSB | 2.40B | 1.36250V VCore | 1.20-1.26v VTT | 0.800V CPU Ref @ 1.2VTT | 9 tRD = Programs crash
    444 FSB | 2.40B | 1.36250V VCore | 1.26v VTT | 0.815V CPU Ref @ 1.2VTT | 9 tRD = Programs crash
    444 FSB | 2.40B | 1.36250V VCore | 1.26v VTT | 0.830V CPU Ref @ 1.2VTT | 9 tRD = Programs crash
    444 FSB | 2.00D | 1.36250V VCore | 1.26v VTT | 0.830V CPU Ref @ 1.2VTT | 9 tRD = Programs crash

    433 FSB | 2.40B | 1.36250V VCore | 1.20v VTT | 0.785V CPU Ref @ 1.2VTT | 9 tRD = Seems stable

    Now can I say "and now"? Should I increase CPU Ref even more than .830?
    LOL yes you can. My guess is you need more vcore, since no of the other made any difference.
    You can try and make changes with EasyTune (press "set" to apply) and see if that help any for a start, then change it in BIOS.
    What is the actual reading for vcore, idle and load?

  10. #190
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    Default Re: Running 8 GB of RAMs with EP45-DS3R

    Yes I felt the same way.
    I'm sorry how will Easy Tune help?

    Should I go above 1.36250? How above? Anything else to try before or with?
    Also, would higher VTT help reach stability with lower VCore?

    With 433 FSB it is 1.328-1.312-1.296 on idle, 1.280-1.296 on load

    ***
    I'm off for now.
    Last edited by Prequel; 01-25-2015 at 11:39 AM.

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