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Thread: overclocking on EP45C-DS3R




  1. #1
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    Default overclocking on EP45C-DS3R

    Hello I've recently bought this mb, the E8400 and Mushkin Redline DDR2 PC2-8000 4GB 2x2GB.

    I've overclocked it like this







    I've changed dram voltage to 2.1V but the CPU doesnt get to 3.6 it stays in 3ghz acordding to the program core temp. Can anyone tell me what did i do wrong or what do i have to change, thank you

  2. #2
    Lsdmeasap's Avatar
    Lsdmeasap is offline GIGABYTE Guru
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    Default Re: overclocking on EP45C-DS3R

    Do you see a red warning box when you enter the MIT Section of your BIOS? If so, those settings are not being used is why.

    You need to put performance enhance on standard and likely set your own vcore and Vtt (Termination) and PLL for 3.6, stock vcore may not be enough and Auto Vtt and PLL may kill your CPU

    YOu may also need a bump to 1.2-1.24 MCH Core

  3. #3
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    Default Re: overclocking on EP45C-DS3R

    so summing up

    MCH Core:1.2
    performance enhance: standard
    CPU PLL: 1.6 ???
    CPU Termination: 1.2V ???
    CPU Reference: 0.76V ??

    DRAM Voltage: 2.1 V
    DRAM Termination: 0.9V ??


    System Memory Multiplier: 2.40D ??

  4. #4
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    Default Re: overclocking on EP45C-DS3R

    CPU Pll of 1.5-1.58 should be good. Likely 1.5 is fine for 3.6

    CPU Terminatin Vtt is all up to you and your chip to find. Keep it under .1V less the Vcore always. At 3.6 you may need 1.2-1.25

    CPU Ref leave in Auto

    Dram Termination leave in Auto as well.

    There is no 2.40D Memory multi. At 400 FSB you could either try 2.40B or 2.66D

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    Default Re: overclocking on EP45C-DS3R

    thank you so much, i will try that this sunday.

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    Default Re: overclocking on EP45C-DS3R

    I've finally get some time I doesnt work with 2.66D it doesnt boot. I've use this conf and the CPU stays at 3ghz. What am i doing wrong!?, sorry for being a dumb :(





    The red warning message is always there, even when I didnt try to overclock.

  8. #8
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    Default Re: overclocking on EP45C-DS3R

    First off, set PCI Express Freq to 100 always!!

    Then it looks like you may need more Vtt (Termination) try 1.24-1.28, and you may also need more vcore as that 1.31xx will be much less once windows loads. Try 1.35 for now and you can lower it later on.

    I would also try 1.24 MCH core voltage

    Stick with trying 2.00B or 2.00D for now, until you get your CPU overclock to 3.6 stable, then you can increase your ram.

    You di have EIST and C1E disabled in Advanced BIOS page right? If not, you need to do that

    And hey, I just noticed your title. You have a EP45-DS3R not a EP45C-DS3R correct? You are using DDR2 right?

  9. #9
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    Default Re: overclocking on EP45C-DS3R

    i have EP45C-DS3R i can use ddr3 or ddr2 on it. The C1E is disabled. Is that the thing that makes the CPU go slower when you dont use it?if it is. it works fine, because before i disabled it it worked at 2ghz on idle, now on 3ghz idle.
    If you dont tell me anything else i can try that configuration.

    I've tried that, CPU stays at 3ghz on idle and on full use.

    pcx=100
    Memory multi=2.00D
    vcore=1.35
    vtt=1.24
    pll=1.5
    mch core=1.24
    dram voltage=2v

    Maybe it's the program I use to check the CPU

    Last edited by Drakot; 03-01-2009 at 10:43 PM.

  10. #10
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    Default Re: overclocking on EP45C-DS3R

    Ahh! Sorry, I was asleep on the job when I saw that about DDR3/2!

    You need to disable C1E and EIST.

    Are you seeing a Red Warning box when you enter the MIT Section of your BIOS? If so, then your overclock settings will not be applied and defaults will be used no matter what you are seeing as settings. So if you do have C1E and EIST Disabled then you must be seeing this warning correct?

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