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Thread: Odd problem overclocking EP45-UD3P




  1. #1
    Join Date
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    Default Odd problem overclocking EP45-UD3P

    Setup:
    Core 2 Duo e6400
    2x 1G Corsair DD2 800 5-5-5-12 1.9V
    550W PSU

    On my old Asus P5B, I overclocked my e6400 to 8x400MHz with 1.4V vCore

    On the EP45-UD3P, strange things happen. Tested each one of these settings individually, then together. This works:
    vCore 1.5V (core temp is 31C at that voltage)
    LLC enabled/disabled
    5-5-5-12
    Mem 1.9V
    Multiplier 8
    FSB 366MHz

    When I put it to 400MHz, I get the constant short beeps that mean "power error" and have to reset the CMOS. Doesn't matter what combination of settings I use - the moment I hit 400MHz, it becomes unhappy. Anybody know what this problem is and/or what I can do to fix it?

    Thanks.

  2. #2

    Default Re: Odd problem overclocking EP45-UD3P

    it's your ram ..... set the static to 9-11 ... and sub timing looser ... after it run .. then tweak latter

  3. #3
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    Default Re: Odd problem overclocking EP45-UD3P

    The problem happens regardless of whether I set the memory timings/voltage or not.

    As a note, it's perfectly stable at 8x366 right now.

  4. #4
    Lsdmeasap's Avatar
    Lsdmeasap is offline GIGABYTE Guru
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    Default Re: Odd problem overclocking EP45-UD3P

    When you use 400 FSB what strap are you using for your ram? And what Static tRead value, that is likely the issue

    Since you know you was stable at 1.4V on your old board, was that BIOS setting or actual shown by CPU-z? Your BIOS setting will be more in this board so adjust accordingly so you can get 1.4 actual again. And you will need to manually set PLL and Vtt (Termination) PLL 1.5-1.6, Vtt 1.25-1.45

    If you want, please link me to your ram and fill this out with your exact settings you are try to use at 400 FSB and I will advise back >>>

    This is Just a template I use to ask people their settings, pay no attention to the numbers in it, replace with yours

    Code:
    MB Intelligent Tweaker(M.I.T.)
    Robust Graphics Booster ...............: 
    CPU Clock Ratio ..........................: 
    Fine CPU Clock Ratio.....................:.0
    CPU Frequency ...........................: 
    
    
    Clock Chip Control 
    Standard Clock Control
    CPU Host Clock Control..................: [Enabled] 
    CPU Host Frequency (Mhz) ............: Mhz
    PCI Express Frequency (Mhz) .........:Set to 100
    
    C.I.A.2 .................................:[Disabled]
    
    
    Advanced Clock Control [Press Enter]
    CPU Clock Drive...........................: <<< 
    PCI Express Clock Drive.................: <<< 
    CPU Clock Skew (ps)....................: <<< 
    MCH Clock Skew (ps)...................: <<< 
    
    
    DRAM Performance Control
    Performance Enhance...................: [STANDARD]
    Extreme Memory Profile (X.M.P.).....: Disabled
    (G)MCH Frequency Latch...............: [Auto]
    System Memory Multiplier ..............: 
    Memory Frequency (Mhz) ..............: 
    DRAM Timing Selectable ................: [Manual]
    
    Standard Timing Control
    CAS Latency Time........................
    tRCD .........................................
    tRP'...........................................
    tRAS..........................................
    
    Advanced Timing Control
    tRRD...........................................
    tWTR..........................................
    tWR............................................
    tRFC...........................................
    tRTP...........................................
    Command Rate (CMD) ....................:2
    
    Driving Strength Profiles
    Driving Strength ............................
    
    Channel A
    Static tRead Value.........................:6/7-10 333/B MCH - 8/9-12 400/D MCH
     tRD Phase0 Adjustment...................:<<< Leave for all below as well
    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.........................:6/7-10 333/B MCH - 8/9-12 400/D MCH
     tRD Phase0 Adjustment...................:<<< Leave for all below as well
    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
    Voltage Type.………... Manual
    CPU
    CPU Vcore….……….........................:
    CPU Termination…..... 1.200V*.......: <<< Leave
    CPU PLL…………………....1.500V*.......: << Please set to stock, Auto overvolts this way to much
    
    CPU Referen.…………....0.755V*.......: <<< .64% Of Vtt (Termination above) Auto Will set this correctly 
    
    CPU Reference2………,,0.800V*.......:<<< .67% Of Vtt (Termination above) Auto Will set this correctly 
    
    MCH/ICH
    MCH Core…………….....1.100V...........: << 
    MCH Reference….…….0.800V...........; <<< Leave
    MCH/DRAM Ref.…......0.900V...........: <<< Leave
    ICH I/O……………….....1.550V............: <<< Leave
    ICH Core…………...……1.100V............: <<< Leave
    
    DRAM
    DRAM Voltage ……....1.800V............: 
    DRAM Termination .…0.900V............: <<< Leave
    Channel A Reference 0.900V............: <<< Leave
    Channel B Reference 0.900V............: <<< Leave
    
    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] Enabled if you use Vmware/Virtual PC
    
    Integrated Peripherals
    Legacy USB Storage Detect ..............[Disabled] *Note* Must be enabled to flash from USB

  5. #5
    Join Date
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    Default Re: Odd problem overclocking EP45-UD3P

    Thanks a ton for posting that. It made me take a detailed second look at everything, and I found my problem.
    The System Memory Multiplier was sending my Memory Frequency skyrocketing. Switched it to 2.000D, stayed at 800MHz, and all is well.

    Thanks again!
    Last edited by Xyrd; 12-09-2008 at 02:25 PM.

  6. #6
    Lsdmeasap's Avatar
    Lsdmeasap is offline GIGABYTE Guru
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