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Thread: EP45-DS3R Q6600 unstable




  1. #1
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    Default EP45-DS3R Q6600 unstable

    Hi,

    I just started doing this but I am trying to overclock my Q6600 to 2.8GHz on an EP45-DS3R. I am just setting the multiplier to x9 and setting fsb to 315.
    It boots fine at this speed but after running prime95 (64 bit matter?) for about 5 mins, I get errors on a couple of the threads. I tried increasing vCore a little although I don't think it'll make much difference at that speed, went up to 1.33125 and prime was still unstable. My RAM is Corsair DDR2-800 XMS2 if it makes any difference, timings 5-5-5-18.

    Any help please?

    Thanks

  2. #2
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    Default Re: EP45-DS3R Q6600 unstable

    try increasing the MCH voltage.

  3. #3
    Lsdmeasap's Avatar
    Lsdmeasap is offline GIGABYTE Guru
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    Default Re: EP45-DS3R Q6600 unstable

    Well what you need to do first is test your ram at that speed and see if it passes memtest86+, if not you can start there before you get into CPU voltages. you must use this version for your board >>>
    Memtest86+ - Advanced Memory Diagnostic Tool

    Once you are sure your ram is stable then you can move onto adding Vcore until it passes, P45 has a large vdrop/vdroop so what you set in the BIOS may be far less then you are actually getting. Check this with CPU-z, as that 1.33 may only be 1.27 actual or less

  4. #4
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    Default Re: EP45-DS3R Q6600 unstable

    Thanks for the reply lsd, I will try that tonight. If my RAM is not stable then what would I need to do, change the timings? tighter or looser? I managed to get it stable at 312 FSB without changing the voltages but any higher and I get errors in prime..

    Thanks

  5. #5
    Lsdmeasap's Avatar
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    Default Re: EP45-DS3R Q6600 unstable

    Looser timings for sure until you settle on what CPU overclock you want. Then you would work on the ram timings

  6. #6
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    Default Re: EP45-DS3R Q6600 unstable

    OK, after a bit more research I think I can see what to do. Please correct me if I'm wrong though.
    1. Increase FSB until system is unstable.
    2. Run Memtest86 to rule out RAM as problem.
    3. If Ram is stable then:
    1.Increase vCore
    2.Increase MCH voltage
    3.Increase ????
    4. If RAM is the problem then:
    1.Loosen the RAM timings (For me loosen to 6-6-6-20?)
    2.Change the divider (what to? 2:3?)
    3.Increase vDIMM
    4.Increase ???
    Obviously a bit basic but if there are any other steps I have missed please enlighten me...
    Thanks

  7. #7
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    Default Re: EP45-DS3R Q6600 unstable

    Another question lsd,
    Is it worth updating the bios on my board before I try all this? I haven't checked what version I have but I think the board was v1, not sure if that refers to the pcb or the firmware though?

    Thanks

  8. #8
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    Default Re: EP45-DS3R Q6600 unstable

    OK, I did a memtest and got loads of error with it @ 320 x 9 so I loosened the timings a little to 6-6-6-18 but still getting error. Any ideas, I guess the next step is the divider but not sure how to use it...

    Thanks

  9. #9
    Lsdmeasap's Avatar
    Lsdmeasap is offline GIGABYTE Guru
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    Default Re: EP45-DS3R Q6600 unstable

    That v1 is the PCB. Ya, update to the latest BIOS. DO NOT USE @BIOS, here is a Qflash guide I wrote up >>>
    http://forums.tweaktown.com/f69/bios...h-guide-27576/

    Not sure, what was your ram speed then, have you tested both sticks by themselves at stock to be sure you do not have faulty stick or sticks? TO do that put one stick in slot one, set your ram voltage manually, set your memory divider to whatever = 800Mhz, then set performance enhance to standard, set Main timings to stock everything else on auto and run memtest86+ >>
    Memtest86+ - Advanced Memory Diagnostic Tool

    If it fails you may have a bad stick, test the other if they both fail you may have a DOA set. It happens...

    But before you decide give me your full settings you tried to run the test with >>>>


    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.........................:7-10
     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.........................:7-10
     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

  10. #10
    Join Date
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    Default Re: EP45-DS3R Q6600 unstable

    Hey, thanks fir the reply. I tried testing the ram at stock and everything was fine. Ran a full memtest with no errors, haven't updated my bios yet because I can't extract f10 version since the exe doesn't run under 64bit and winrar / 7zip don't work, think f9 will work though.
    Anyway my settings were:

    Code:

    MB Intelligent Tweaker(M.I.T.)
    Robust Graphics Booster ...............: Auto
    CPU Clock Ratio ..........................: 9x
    Fine CPU Clock Ratio.....................: NOT SHOWN
    CPU Frequency ...........................: 2.88 GHz (320 x 9)


    Clock Chip Control
    Standard Clock Control
    CPU Host Clock Control..................: [Enabled]
    CPU Host Frequency (Mhz) ............: 320 Mhz
    PCI Express Frequency (Mhz) .........: 100

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


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


    DRAM Performance Control
    Performance Enhance...................: [STANDARD]
    Extreme Memory Profile (X.M.P.).....: NOT SHOWN
    (G)MCH Frequency Latch...............: Auto
    System Memory Multiplier ..............: Auto
    Memory Frequency (Mhz) ..............: 800 960
    DRAM Timing Selectable ................: [Manual]

    Standard Timing Control
    CAS Latency Time........................5
    tRCD ...................................5
    tRP'....................................5
    tRAS....................................18

    Advanced Timing Control
    tRRD....................................3 (Auto)
    tWTR....................................3 (Auto)
    tWR.....................................6 (Auto)
    tRFC....................................42 (Auto)
    tRTP....................................3 (Auto)
    Command Rate (CMD) .....................0 (Auto)

    Driving Strength Profiles
    Driving Strength .......................

    Channel A
    Static tRead Value.........................: Auto
    tRD Phase0 Adjustment...................: 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.........................:Auto
    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….……….........................: 1.32500
    CPU Termination…..... 1.200V*.......: <<< Leave
    CPU PLL…………………....1.500V*.......: << Please set to stock, Auto overvolts this way to much

    CPU Referen.…………....0.760V*.......: <<< .64% Of Vtt (Termination above) Auto Will set this correctly

    CPU Reference2………NOT SHOWN

    MCH/ICH
    MCH Core…………….....1.100V...........: <<
    MCH Reference….…….0.76V...........; <<< Leave
    MCH/DRAM Ref.…......0.900V...........: <<< Leave
    ICH I/O……………….....1.550V............: <<< Leave
    ICH Core…………...……1.100V............: <<< NOT SHOWN

    DRAM
    DRAM Voltage ……....1.800V............: (Also tried 1.9 to no avail)
    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)................: [Enabled]
    C2/C2E State Support....................: Not Shown
    x C4/C4E State Support..................: Not Shown
    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 ..............[Enabled] *Note* Must be enabled to flash from USB</pre>
    <!-- / message --> <!-- sig -->Think that should be about right, just noticed that C1E is enabled, should I disable that, looks like it could be annoying...

    I'm thinking about RMAing my RAM cause it seems very bad for OC... Good Idea?

    Thanks

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