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Thread: EP45-UD3P + Q6600. No longer able to run 333x8




  1. #1
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    Question EP45-UD3P + Q6600. No longer able to run 333x8

    After installing XP on a secondary partition I noticed a significant degrade in performance. I had been running my Q6600 at 333x8 (2.66GHz), however my system now reported 266x8 (2.1GHz). Normally this wouldn't be difficult to fix, but for some reason my system is simply refusing to boot with the bus speed set to 333, but rather seems stuck on 266 regardless of what I attempt to do (it does boot. The cpu is just glued at 266MHz). I've reverted the settings back to optimal defaults numerous times to little effect. Setting the system to 333x9 simply makes the PC boot in 266x9. I'm not getting any notices of failed boots when I go back into the bios settings either, although sometimes the system shuts down and restarts after saving bios settings and sometimes it doesn't... not sure if that behavior is a clue tho, as that probably just depends on what settings have changed.

    I was initially able to set 333 with stock voltages as well(heck, it ran fine with vcore set to 1.25v earlier). I have no clue what could have happened to make 333 refuse to work. I even updated firmware from F4 to the latest release, yet the issue persists. I have wasted most of my evening trying to get this thing to accept 333MHz and after mucking with most every reasonable setting have simply ended up rather frustrated and boggled.

    Any help would be appreciated.
    -- Thank you.

    Hardware:
    * GA-EP45-UD3P
    * Q6600 G0 SLAKR (stock cooling. Temps maintained under < 62C)
    * 2x 2Gb Crucial Ballistix DDR2 800MHz 4-4-4-12
    * ATI Radeon HD4870 1gb
    * OCZ 700W PSU

    BIOS:
    Code:
    MB Intelligent Tweaker(M.I.T.)
    Robust Graphics Booster ........: Auto
    CPU Clock Ratio ................: 8x
    CPU Frequency ..................: 2.66GHz (333x8)
    
    Clock Chip Control
    Standard Clock Control
    CPU Host Clock Control .........: [Enabled]
    CPU Host Frequency (Mhz) .......: 333Mhz
    PCI Express Frequency (Mhz) ....: 100
    
    
    Advanced Clock Control [Press Enter]
    CPU Clock Drive ................: 700mV (Upped these two to 900mV to little effect)
    PCI Express Clock Drive ........: 700mV
    CPU Clock Skew (ps) ............: 0ps
    MCH Clock Skew (ps) ............: 0ps
    
    DRAM Performance Control
    Performance Enhance ............: [STANDARD]
    Extreme Memory Profile (X.M.P.) : Disabled
    (G)MCH Frequency Latch .........: 333MHz
    System Memory Multiplier .......: 2.00B
    Memory Frequency (Mhz) .........: 667MHz
      (Also attempted mem freq at 800MHz. Don't recall the multiplier setting for this)
    DRAM Timing Selectable .........: [Manual]
    
    Standard Timing Control
    CAS Latency Time ...............: 4 
    tRCD ...........................: 4
    tRP ............................: 4
    tRAS ...........................: 12
       (Also tried 5 5 5 18/Auto)
    
    Advanced Timing Control
    tRRD ...................... (3) : Auto
    tWTR ...................... (3) : Auto
    tWR ....................... (6) : Auto
    tRFC ..................... (52) : Auto
    tRTP ...................... (3) : Auto
    Command Rate (CMD) ........ (0) : Auto
    
    Channel A and B and DIMM settings default/Auto. (Sorry, forgot to write these values down)
    
    Motherboard Voltage Control
    Voltage Type ...................: Manual
    Load-Line Calibration ..........: Disabled
    CPU
    CPU Vcore ............ (1.275V) : 1.275V (Also attempted Auto and slightly higher voltages)
    CPU Termination ...... (1.200V) : Auto
    CPU PLL .............. (1.500V) : 1.5V (Also attempted Auto)
    CPU Reference ........ (0.760V) : Auto
    
    MCH/ICH
    MCH Core ............. (1.100V) : Auto
    MCH Reference ........ (0.760V) : Auto
    MCH/DRAM Ref ......... (0.900V) : Auto
    ICH I/O .............. (1.500V) : Auto
    ICH Core ............. (1.100V) : Auto
    
    DRAM
    DRAM Voltage ......... (1.800V) : Auto (Also attempted 2.0V)
    DRAM Termination ..... (0.900V) : Auto (Also 1V respectively)
    Channel A Reference .. (0.900V) : Auto
    Channel B Reference .. (0.900V) : Auto
    
    Advanced Settings
    Limit CPUID Max. to 3 ..........: [Disabled]
    No-Execute Memory Protect.......: [Disabled]
    CPU Enhanced Halt (C1E).........: [Disabled]
    CPU Thermal Monitor 2(TM2) .....: [Enabled]
    CPU EIST Function...............: [Disabled]
    Virtualization Technology.......: [Disabled]
    Last edited by Shyotl; 02-15-2009 at 02:56 PM. Reason: Fixed formatting

  2. #2
    Join Date
    Sep 2008
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    990

    Default Re: EP45-UD3P + Q6600. No longer able to run 333x8

    Does the system work fine at stock speeds? Try running prime 95 for a few hours.

    Also try increasing VCore to 1.35V. That's still within Intel's specifications, so don't worry. Give CPU termiantiona bunp to 1.3V. I just want to make sure it's not the voltages before trying anything else.


  3. #3
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    Feb 2009
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    Default Re: EP45-UD3P + Q6600. No longer able to run 333x8

    Temps never peak above 58C while running Prime95, and the system has always seemed rather stable, even when previously running at 2.66GHz.

    With Vcore at 1.35V, termination set to 1.3V, and Clock drive both 700mV and 900mV the system still boots with bus speed at 266.

  4. #4
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    Default Re: EP45-UD3P + Q6600. No longer able to run 333x8

    What do you meand by rather stable? I need to know whether it can run Prime 95 without Prime showing any errors. The cause of the problem can be very differnet things depending on whether Prime ist stable at stock or not.


  5. #5
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    Default Re: EP45-UD3P + Q6600. No longer able to run 333x8

    Quote Originally Posted by Nickel020 View Post
    What do you meand by rather stable? I need to know whether it can run Prime 95 without Prime showing any errors. The cause of the problem can be very differnet things depending on whether Prime ist stable at stock or not.
    I've never experienced an unexpected shutdowns, nor any temp related cpu throttling. Is there something else I'm to look for?

    Prime95's results.txt file shows all the Self-tests as passing over the few hours I ran it this morning. If needed I can run it longer tonight.

  6. #6
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    Default Re: EP45-UD3P + Q6600. No longer able to run 333x8

    A few hours is enough to be reasonably sure it's stable. This mans that none of your hardware is defective and we can get to voerclocking :)

    Set FSB to 400, multiplicator to 8, system memory multiplier to 2.0D, CPU Vcore to 1.375V, enable loadline calibration. CPU Termination and CPU Pll to the stock values listed beside them (auto icnreases them which is bad).

    CPU Voltage may seem high to you but this is a 65nm chip and they can take more (and need it) than 45nm parts. I give my Q6600 up to 1.5V^^


  7. #7
    kick's Avatar
    kick is offline Senior Member
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    Default Re: EP45-UD3P + Q6600. No longer able to run 333x8

    When u get a bios that works ok save it,using the save function.Then you should be able to return to a bios that works.
    Installing xp will have no effect on your bios settings.If it booted at 2.6 before it will still boot at 2.6.
    Whether it will load the different versions of windows is another story.
    They need to be on seperate hdd really.
    Are u using a readyboost usb for vista?.
    If bios is compromised somehow, you may have to short out the cmos.
    Current Systems:

    Asrock p67 Extreme6.............. Gigabyte EP-45 UD3 ...................... Gigabyte 73 PVM S2
    Intel i5 2500k 4.8ghz................ Intel Q8400 3.8ghz......................... Intel D820 2.8ghz
    Zalman 10x cooler.................... Coolermaster V8............................ HP cooler
    8GB Gskill ripjaw ddr3.............. 4GB Gskill PI ddr2.......................... 4GB samsung ddr2
    60GB ssd/500GB HDD .............. WD 1TB hdd.................................... Seagate 160GB hdd
    GTX 460 1GB x2 SLI ................. Msi 9600GT 512MB(died) ........... Onboard gx
    Win7 64 ,750w psu(ocz)............ Win7 64 ,520w psu,seasonic...... Win XP pro ,400w psu

    HEC 6A34 case . ....................... Jeantec R2 case............................ Packard Bell case

    hoping to upgrade to http://www.thinkgeek.com/stuff/41/habicase.shtml
    http://www.flixya.com/video/140325/Animal-launching

  8. #8
    Join Date
    Feb 2009
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    Default Re: EP45-UD3P + Q6600. No longer able to run 333x8

    Code:
    CPU Clock Ratio ................: 8x
    CPU Host Frequency (Mhz) .......: 400Mhz
    Memory Frequency (Mhz) .........: 800MHz
    Load-Line Calibration ..........: [Enabled]
    CPU Vcore ............ (1.275V) : 1.375V 
    CPU Termination ...... (1.200V) : 1.200V
    CPU PLL .............. (1.500V) : 1.5V
    CPU Reference ........ (0.760V) : Auto
    Boots 266x8

    Code:
    CPU Clock Ratio ................: 8x
    CPU Host Frequency (Mhz) .......: 333Mhz
    Memory Frequency (Mhz) .........: 667MHz
    Load-Line Calibration ..........: [Enabled]
    CPU Vcore ............ (1.275V) : 1.375V 
    CPU Termination ...... (1.200V) : 1.200V
    CPU PLL .............. (1.500V) : 1.5V
    CPU Reference ........ (0.760V) : Auto
    Boots 266x8

    Code:
    CPU Clock Ratio ................: 9x
    CPU Host Frequency (Mhz) .......: 333Mhz
    Memory Frequency (Mhz) .........: 667MHz
    Load-Line Calibration ..........: [Enabled]
    CPU Vcore ............ (1.275V) : 1.375V 
    CPU Termination ...... (1.200V) : 1.200V
    CPU PLL .............. (1.500V) : 1.5V
    CPU Reference ........ (0.760V) : Auto
    Boots 266x9

    Results are the same with CPU Reference set to .76V
    (CPU-Z/CoreTemp same as pic in earlier post each time)
    It'd be somewhat handy if there was a way to tell if it failed without booting up xp or vista, too.



    The OS' load fine, kick. I've gone through recovering the master boot record through easy BCD and such. I'm not using readyboost either. I had touched the bios during installation due to an optical drive dying out. I also messed with AHCI settings. I'm really not sure what could have happened to make it so fussy, as OCing the q6600 was pretty painless earlier.
    Last edited by Shyotl; 02-16-2009 at 06:45 AM.

  9. #9
    Join Date
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    Default Re: EP45-UD3P + Q6600. No longer able to run 333x8

    Well, I've pretty much concluded Vcore has no effect. Regardless of its setting I have yet to obtain a bus speed of 333MHz. I'm able to get every other setting to stick. My ram accepts 800MHz @ 2.0V and 667MHz as well. Voltage changes appear in ET6, multiplier changes appear in POST. It's just as if changing cpu host freq simply isn't working. Is there a simple downclock I could use to at least see if that works?

  10. #10
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    Default Re: EP45-UD3P + Q6600. No longer able to run 333x8

    This is indeed very strange. For some reason the board is unstable with the higher FSBs and this causes it toalways set the FSB back to default (which it's supposed to do if it fails too boot).
    Here's some things I would try:

    Try setting the multiplier to 6/7 and see if that boots with 333 FSB.

    If you can, try another PSU. It could be something to do with the PSU and the increased power draw from the overclocked CPU could be just enough to push it over the edge and cause unstable voltages (which cause th boot failure).

    Unplugging all power connectors and connecting them again. Never hurts to be sure this is not an issue.

    Try unplugging the AC power cord and taking out the battery and leaving it out overnight. This has often worked wonders on unexplainable problems.


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