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Thread: Voltage seems too high for 3.0Ghz Q6600 + EP45-UD3R...




  1. #31
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    Default Re: Voltage seems too high for 3.0Ghz Q6600 + EP45-UD3R...

    Quote Originally Posted by Chike View Post
    Try CPU Ratio 7, then 8, add vcore as needed, repeat the tests for each.
    If you get a blue screen please post the error code.
    CPU ratio 7 worked without a hitch, trying 8 now, guessing it'll freeze so I'll post the error code when it presents itself.
    Intel Core 2 Quad Q6600 (VID - 1.325) 3.0Ghz @ 333@9 1.4V
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  2. #32
    Chike is offline Senior Member
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    Default Re: Voltage seems too high for 3.0Ghz Q6600 + EP45-UD3R...

    As little as need vcore as possible

  3. #33
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    Default Re: Voltage seems too high for 3.0Ghz Q6600 + EP45-UD3R...

    Alright well, I repeatedly bumped the vcore up only a notch each time, around 1.38-1.4 it would reboot, then around 1.4-1.42 it would reboot without letting me get into bios so I had to clear the CMOS. At 1.4275 it boot windows but froze instantly before I could move the mouse. It wasn't until 1.43125 that it boot windows and allowed me to try p95, almost instantly I got the BSOD that you see below.

    [IMG][/IMG]
    Intel Core 2 Quad Q6600 (VID - 1.325) 3.0Ghz @ 333@9 1.4V
    Thermaltake SpinQ
    GIGABYTE GA-EP45-UD3R - Updated bios
    G.SKILL 4GB (2 x 2GB) 240-Pin DDR2 SDRAM DDR2 800 (PC2 6400)
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  4. #34
    Chike is offline Senior Member
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    Default Re: Voltage seems too high for 3.0Ghz Q6600 + EP45-UD3R...

    Please post full settings on failures.
    Do you have CPU PLL set to 1.57v/1.59v?

  5. #35
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    Default Re: Voltage seems too high for 3.0Ghz Q6600 + EP45-UD3R...

    The only thing I changed each time it failed work was the vcore, I upped it each time, I didn't touch any other voltages like you said. My PLL was 1.57v and still is.

    MB Intelligent Tweaker(M.I.T.)
    Robust Graphics Booster -------------- : [Auto]
    CPU Clock Ratio ---------------------- : [8]
    Fine CPU Clock Ratio ----------------- : [0.0] <-- ignore if not available
    CPU Frequency ---------------------: 3.20 <-- this is set by your bios

    Clock Chip Control
    Standard Clock Control
    CPU Host Clock Control --------------- : [Enabled]
    CPU Host Frequency (Mhz) --------------: [400]
    PCI Express Frequency (Mhz) ---------- : [100] <--- Set to 100, never leave this on Auto

    C.I.A.2 ------------------------------ : [Disabled]

    Advanced Clock Control ------- [Press Enter]
    CPU Clock Drive ---------------------- : [800]
    PCI Express Clock Drive -------------- : [900]
    CPU Clock Skew (ps) ------------------ : [0]
    MCH Clock Skew (ps) ------------------ : [0]

    DRAM Performance Control
    Performance Enhance ------------------- : [Standard] <--- set to STANDARD when overclocking
    Extreme Memory Profile --- (X.M.P.) --- : [Disabled] <--- Leave this Disabled
    (G)MCH Frequency Latch ---------------- : [Auto]
    System Memory Multiplier -------------- : [2.00D] <-- this is the setting that you are using
    Memory Frequency (Mhz) ---------------- : [800 800]
    DRAM Timing Selectable ---------------- : [Auto] <-- set to MANUAL for overclocking

    Standard Timing Control
    CAS Latency Time -------- 5 ---------- : [Auto]
    tRCD ------------------- 5 ---------- : [Auto]
    tRP --------------------- 5 ---------- : [Auto]
    tRAS ------------------- 15 ---------- : [Auto]

    Advanced Timing Control
    tRRD ------------------- 3 ---------- : [Auto]
    tWTR ------------------- 3 ---------- : [Auto]
    tWR --------------------- 4 ---------- : [Auto]
    tRFC ------------------- 52 ---------- : [Auto]
    tRTP ------------------- 3 ---------- : [Auto]
    Command Rate (CMD) -------------------- : [2] <--- Auto or 0 is OK

    Driving Strength Profiles
    Driving Strength --------- : Press Enter <--- press ENTER to modify memory sub-timings when overclocking

    Channel A
    Static tRead Value --------------------- : [10]
    tRD Phase0 Adjustment ------------------ : [Auto] <-- leave this and below set to AUTO
    tRD Phase1 Adjustment ------------------ : [Auto]
    tRD Phase2 Adjustment ------------------ : [Auto]
    tRD Phase3 Adjustment ------------------ : [Auto]
    Trd2rd(Different Rank) ----------------- : [Auto]
    Twr2wr(Different Rank) ----------------- : [Auto]
    Twr2rd(Different Rank) ----------------- : [Auto]
    Trd2wr(Same/Diff Rank) ----------------- : [Auto]
    Dimm1 Clock Skew Control --------------- : [Auto] ps
    Dimm2 Clock Skew Control --------------- : [Auto] ps

    Channel B
    Static tRead Value --------------------- : [10]
    tRD Phase0 Adjustment ------------------ : [Auto] <-- leave this and below set to AUTO
    tRD Phase1 Adjustment ------------------ : [Auto]
    tRD Phase2 Adjustment ------------------ : [Auto]
    tRD Phase3 Adjustment ------------------ : [Auto]
    Trd2rd(Different Rank) ----------------- : [Auto]
    Twr2wr(Different Rank) ----------------- : [Auto]
    Twr2rd(Different Rank) ----------------- : [Auto]
    Trd2wr(Same/Diff Rank) ----------------- : [Auto]
    Dimm1 Clock Skew Control --------------- : [Auto] ps
    Dimm2 Clock Skew Control --------------- : [Auto] ps

    Motherboard Voltage Control
    CPU
    Voltage Types------------ Normal -------- Current -----
    Load-Line Calibration ----------------- : [Enabled]
    CPU Vcore --------------- 1.3500V ---- : [1.43125V]

    CPU Termination --------- 1.200V* ----- : [1.200V]
    CPU PLL ----------------- 1.500V* ----- : [1.570V]

    CPU Reference ----------- 0.760V* ----- : [0.760]
    CPU Reference2 ---------- ?? ----- : [Auto]

    MCH/ICH
    MCH Core ---------------- 1.100V ------- : [1.200V]
    MCH Reference ----------- 0.760V ------- : [0.760]
    MCH/DRAM Ref ------------ 0.900V ------ : [Auto]
    ICH I/O ----------------- 1.1500V ------- : [1.500V]
    ICH Core ---------------- 1.100V ------- : [1.100V]
    DRAM
    DRAM Voltage ------------ 1.800V ------- : [1.900V]
    DRAM Termination -------- 0.900V ------- : [Auto]
    Channel A Reference ----- 0.900V ------- : [Auto]
    Channel B Reference ----- 0.900V ------- : [Auto]

    Advanced Settings
    Limit CPUID Max. to 3 ------------------ : [Disabled]
    No-Execute Memory Protect -------------- : [Enabled]
    CPU Enhanced Halt (C1E) ---------------- : [Disabled]
    C2/C2E State Support ------------------- : [Disabled]
    x C4/C4E State Support ----------------- : [Disabled]
    CPU Thermal Monitor 2 (TM2) ------------ : [Enabled]
    CPU EIST Function --------------------- : [Disabled]
    Virtualization Technology -------------- : [Disabled]

    Integrated Peripherals
    Legacy USB Storage Detect ------------- : [Disabled]
    Intel Core 2 Quad Q6600 (VID - 1.325) 3.0Ghz @ 333@9 1.4V
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  6. #36
    Chike is offline Senior Member
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    Default Re: Voltage seems too high for 3.0Ghz Q6600 + EP45-UD3R...

    I am a bit confused, your signature says VID 1.325v but the default in template is 1.35v, which is it?

    124 is usually bus related error, vcore may help but there are better ways.
    Lets try working on the CPU & MCH references.
    Just to eliminate other possible problems, set MCH Core 1.24v, and we will use 1.24v VTT.
    You were OK with default vcore at 2.8GHz so set it to default +0.05.
    The references are a percent of VTT, default at 63.33% (1.2 x 0.6333 = 0.76).
    To be sure of what we do, all references adjustments are made when VTT is set to 1.2.

    Procedure as follow:
    Set VTT to 1.2v
    Adjust MCH to desired value.
    Set VTT back to it's desired value (1.24 for now).

    ProfJim said more for quads, we will test (and use) this theory, begin with higher values first.
    For each reference, try 1, 2, and 3 steps above default first until the system is stable, or more stable.
    If more does not help, try 1-3 steps lower than default.
    Begin with CPU reference, then tweak the MCH reference. Do not change more than one of them at a time.

    In my system I have found the 1 value below default (which is also max) enabled boot, however, 2 and 3 below did too, so I figured 2 below default would be the best choice.

    The next thing to try, after you have found the most possible stable settings, is clock skews.
    I am not completely sure, but it seems logical to me that only one need to be changed.
    Try 50-250ps on the CPU clock first, if it makes things worse, set it 0 and try 50-250ps on the MCH clock.

    Then you may try increasing VTT to 1.26-1.28v (only if needed) and then vcore.

    It would be best to run memtest86+ before running windows, untill at least test #5 does not fail.
    To run specific test, press c, 1, 3, <test#>, enter, and 0.

    If something isn't clear, please ask.

    Good luck.

  7. #37
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    Lsdmeasap is offline GIGABYTE Guru
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  8. #38
    Chike is offline Senior Member
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    Default Re: Voltage seems too high for 3.0Ghz Q6600 + EP45-UD3R...

    Quote Originally Posted by Lsdmeasap View Post
    The above image shows Vtt BSOD (0x00000124)
    Having to use 1.4+ vcore with VTT 1.3v VTT for 3.2GHz, we are trying other methids.

    I am stable at 448x8.5 with 1.22v VTT, a.18v MCH Core, and still going to lower both.
    I have started with 1.24v MCH Core and 1.28v VTT, but after I have fine tuned all my setting I am able to use much less.

  9. #39
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    Default Re: Voltage seems too high for 3.0Ghz Q6600 + EP45-UD3R...

    My VID is 1.3250v, you were right I'm sorry for overlooking that in my posted settings. So if I understand this correctly, my VTT and MCH core should always be set at 1.24v whenever I'm testing my stability each time I change the references. Are you saying what I should do is set my VTT to 1.2v so that the [auto] feature will set my references to exactly 63.33% of VTT. Then bump the CPU (or MCH?) reference(s) up a notch, change the VTT back to 1.24v and boot to see if I'm stable. And if I'm not then to bump the CPU (or MCH?) reference up another notch and test again then repeating the process one more time if I'm not stable? I'm sorry if my incompetence in OCing is forcing you to have to spell it out for me, it's like a foreign language to me trying to understand it all. Anyways, thanks again and let me know if I'm close at all to what you mean.
    Intel Core 2 Quad Q6600 (VID - 1.325) 3.0Ghz @ 333@9 1.4V
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    GIGABYTE GA-EP45-UD3R - Updated bios
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  10. #40
    Chike is offline Senior Member
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    Default Re: Voltage seems too high for 3.0Ghz Q6600 + EP45-UD3R...

    Yes, exactly, repeat the process untill stable, or a bit more stable.
    Up to 3 teps above default, then up to 3-4 steps below default.
    Beging with the CPU reference, than when you find stable, or more stable settings, tweak the MCH reference.
    After all this is done, you may still need to increase VTT, and set one or both of them 1 step up or down, but it is possible you will be able to lower it.
    I am leaning toword CPU reference, because MCH reference should not be effected by CPU frequency, and it was ok at 2.8GHz.


    When you change VTT the references scale with it.
    Instead of doing math and to find what precentage you are using, we set VTT to 1.2v and change to a familiar value.
    If I am not mistaken, MCH references are 0.02v(1.666%) steps belowe default(0.64, 0.72, 0.70 etc.), and 0.04v(2.333%) steps above it (0.800, 0.840, 0.880 etc.).
    Not sure about the CPU steps, thos may vary with different boards.

    Also when you list reference in the template, post the value at 1.2v, e.g:
    CPU Termination --------- 1.200V* ----- : [1.240V]
    MCH Reference ----------- 0.760V ------- : [0.744] ; 0.72 @ 1.2v VTT

    The references, along with clocks skew, control the logic of the bus between the MCH and CPU. If they are not set precisly, data may not be interperted correctly or not in time.

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