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Thread: Safe overclock Q6600 with EP45-UD3P




  1. #1
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    Default Safe overclock Q6600 with EP45-UD3P

    Hi,

    I'm having problems trying to overclock my Q6600 with EP45-UD3P to 3.0 GHZ. Here what I did

    • CPU Clock Ratio: 9x
    • Host Clock Control: Enable
    • CPU Host Frequency: 333
    • PCI Express Frequency: 100

    I didn't make any change to System Memory Multiplier or memory settings since I don't care much about the FSP ratio.

    In addition, from what I read so far, Q6600 can be safely overclocked to 3.0GHZ without increasing voltage so I also didn't make any change to the CPU Voltage Control (later tried to set it at 1.27500V but still failed)

    Anyway, with that settings, the system failed to reboot and then it automatically reset to mobo's default. When I went into the M.I.T. it displayed an error message saying that the problem is because of voltage issue. So I really appreciate any help on this.

    Here my system specs:

    CPU: Intel Q6600
    Mobo: GIGABYTE GA-EP45-UD3P LGA 775 Intel P45
    Memory: G.SKILL 4GB (2 x 2GB) 240-Pin DDR2 SDRAM DDR2 1066 (PC2 8500)

  2. #2
    Lsdmeasap's Avatar
    Lsdmeasap is offline GIGABYTE Guru
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    Default Re: Safe overclock Q6600 with EP45-UD3P

    Here would be optimal ranges for 3Ghz, all CPU's are different so you may or may not be able to get 3Ghz with stock voltages. But I do advise you set voltages manually as Auto will WAY Overvolt them

    Code:
    MB Intelligent Tweaker(M.I.T.)
    Robust Graphics Booster ...............: Auto or Fast
    CPU Clock Ratio ..........................: 9
    Fine CPU Clock Ratio.....................:.0
    CPU Frequency ...........................: 3.00
    
    
    Clock Chip Control 
    Standard Clock Control
    CPU Host Clock Control..................: [Enabled] 
    CPU Host Frequency (Mhz) ............: 333Mhz
    PCI Express Frequency (Mhz) .........:Set to 100
    
    C.I.A.2 .................................:[Disabled]
    
    
    Advanced Clock Control [Press Enter]
    CPU Clock Drive...........................: <<< 800
    PCI Express Clock Drive.................: <<< 900
    CPU Clock Skew (ps)....................: <<< 50-150 (Can help with stability)
    MCH Clock Skew (ps)...................: <<< 150-250 (Can help with stability)
    
    
    DRAM Performance Control
    Performance Enhance...................: [STANDARD]
    Extreme Memory Profile (X.M.P.).....: Disabled
    (G)MCH Frequency Latch...............: [Auto]
    System Memory Multiplier ..............: 3.20B
    Memory Frequency (Mhz) ..............: 1066
    DRAM Timing Selectable ................: [Manual]
    
    Standard Timing Control
    CAS Latency Time........................5
    tRCD .........................................5
    tRP'...........................................5
    tRAS..........................................15/18
    
    Advanced Timing Control
    tRRD...........................................3-4
    tWTR..........................................3-6
    tWR............................................4-6
    tRFC...........................................52-62
    tRTP...........................................3-5
    Command Rate (CMD) ....................:2
    
    Driving Strength Profiles
    Driving Strength ............................800-1200 (Test all three last) Set 1066 for now
    
    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….……….........................: Alll up to your chip, and your board,  What you set here will be less in windows, and less then that at load. Maybe 1.3-1.4 for 3Gh (Actual) you can check your boards drop with CPU-z set a voltage at stock speed and then go in windows at look in CPU-z and see what you get, then keep that in mind when adjusting this for 3Ghz
    
    CPU Termination…..... 1.200V*.......: <<< 1.24-1.45
    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...........: << 1.24-1.28
    MCH Reference….…….0.800V...........; <<< Leave
    MCH/DRAM Ref.…......0.900V...........: <<< Leave
    ICH I/O……………….....1.550V............: <<< 1.55-1.6
    ICH Core…………...……1.100V............: <<< 1.14-1.25
    
    DRAM
    DRAM Voltage ……....1.800V............: 2.0-2.1
    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

  3. #3
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    Default Re: Safe overclock Q6600 with EP45-UD3P

    Thanks alot...But when I set System Memory Multiplier to 3.2B, the Memory Frequency ends up being only 853 which will underclock my memory ...Can I just leave it at Auto which seems like will let me keep it at 1066Mhz.

    Quick question, is setting it to Normal = stock? And by "Leave", do you mean keep it at Auto?
    Last edited by Micz; 12-18-2008 at 05:58 PM.

  4. #4
    Lsdmeasap's Avatar
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    Default Re: Safe overclock Q6600 with EP45-UD3P

    3.20 is 1066 ONLY if you overclock to 333 FSB, which you asked about so I gave you settings for that. 333x3.20=1066

    If you are not overclocking, or have EIST/C1E enabled then of course your CPU and ram will downclock when idle. Best to disable those when overclocked and things will stay at 3Ghz and 1066Mhz ram

    Yes, Leave means Leave in Auto, Sorry about that. Normal can vary depending on speeds and other settings, depending on which thing's normal setting you are looking at.

    Best to set things to stock or less if I did not suggest them to be set above if you want to change them because many do change automatically as you adjust others. Those for sure that adjust automatically are these >>>>

    CPU Termination (Vtt) Automatically changes the following if manually set >>>
    CPU Reference Voltage
    CPU Reference2 Voltage
    MCH Reference Voltage

    DRAM Voltage Automatically changes the following if manually set >>>
    MCH/DRAM Reference Voltage
    DRAM Termination Voltage
    Channel A Reference Voltage
    Channel B Reference Voltage

  5. #5
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    Default Re: Safe overclock Q6600 with EP45-UD3P

    Thank so much for your help, Lsdmeasap. I've just realized that the reason my Memory frequency drops to 853 is because somehow my CPU Host Frequency was reset to 266 (Stupid me, I didn't look at it). Just set it back to 333Mhz and it looks all normal now.

    Anyway, I followed your instructions and everything seems to work great. Again, thanks alot. So I decided to drop the Vcore back to 1.27500V (stock voltage) and surprisingly, the system remains stable. CPU-Z reports 1.216V at idle, and 1.184V on full load with Prime95 and OCCT. So in your expert opinion, do you think my Vdrop/Vdroop is decent??

    So here is my settings, is there any more tweak that I can do in order to make it run much safer?

    Code:
    MB Intelligent Tweaker(M.I.T.)
    Robust Graphics Booster ...............: Auto
    CPU Clock Ratio ..........................: 9
    CPU Frequency ...........................: 3.00
    
    
    Clock Chip Control 
    Standard Clock Control
    CPU Host Clock Control..................: [Enabled] 
    CPU Host Frequency (Mhz) ............: 333Mhz
    PCI Express Frequency (Mhz) .........: 100
    C.I.A.2 .................................:[Disabled]
    
    
    Advanced Clock Control [Press Enter]
    CPU Clock Drive...........................: 800
    PCI Express Clock Drive.................: 900
    CPU Clock Skew (ps)....................: 50
    MCH Clock Skew (ps)...................: 50 (different than yours suggestion)
    
    DRAM Performance Control
    Performance Enhance...................: [STANDARD]
    Extreme Memory Profile (X.M.P.).....: Disabled
    (G)MCH Frequency Latch...............: [Auto]
    System Memory Multiplier ..............: 3.20B
    Memory Frequency (Mhz) ..............: 1066
    DRAM Timing Selectable ................: [Manual]
    
    Standard Timing Control
    CAS Latency Time........................5
    tRCD .........................................5
    tRP'...........................................5
    tRAS..........................................15
    
    Advanced Timing Control
    tRRD...........................................4
    tWTR..........................................4
    tWR............................................8
    tRFC...........................................68
    tRTP...........................................4
    Command Rate (CMD) ....................:2
    
    Driving Strength Profiles
    Driving Strength ............................ 1066
    
    Channel A
    Static tRead Value.........................:6
     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.........................:6
     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
    
    Motherboard Voltage Control
    Voltage Type.………... Manual
    CPU
    CPU Vcore….……….........................: 1.27500V (stock voltage as displayed on the BIOS)
    
    CPU Termination…..... 1.200V.......:1.240V
    CPU PLL…………………....1.500V.......:1.500V
    CPU Referen.…………....0.760V.......: Auto
    
    MCH/ICH
    MCH Core…………….....1.100V...........: 1.200V (bit lower than your suggestion)
    MCH Reference….…….0.760V...........; Auto
    MCH/DRAM Ref.…......0.900V...........: Auto
    ICH I/O……………….....1.500V............: 1.570V
    ICH Core…………...……1.100V............: 1.200V
    
    DRAM
    DRAM Voltage ……....1.800V............: 1.840V
    DRAM Termination .…0.900V............: Auto
    Channel A Reference 0.900V............: Auto
    Channel B Reference 0.900V............: Auto
    FYI, according to HWMonitor, my CPU is idle at about 38 C and around 50-56C with full load.
    Last edited by Micz; 12-19-2008 at 06:46 AM.

  6. #6
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    Default Re: Safe overclock Q6600 with EP45-UD3P

    @Lsdmeasap

    Thanks for the great info on overclocking the Q6600 with the EP45-UD3P. I would like to OC to 3.0Ghz as well, however, before I change the BIOS settings, I wanted to confirm some things about the settings you provided.

    I have different (slower) RAM than the original poster and I assume some of the memory settings you posted will be different due to the different RAM specs. Of course, I could be completely wrong seeing as how I am new to all this!

    My RAM: G.SKILL 4GB (2 x 2GB) 240-Pin DDR2 SDRAM DDR2 800 (PC2 6400)

    I would greatly appreciate it if you re-posted the settings to match my RAM specs.

    Some notes...

    1) In MCH/ICH, I don't have a choice for 1.55 or 1.6 - my stepping choices are ... 1.5, 1.57, 1.59, 1.61 etc.

    2) In advanced settings, I don't see "C2/C2E State Support" or "x C4/C4E State Support"

    3) I am using BIOS version F6 and Windows XP Pro SP3 (32-bit) - My Q6600 is the G0 variety.


    Thanks a lot!!!
    Last edited by mozzle; 02-22-2009 at 08:22 AM.

  7. #7
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    Default Re: Safe overclock Q6600 with EP45-UD3P

    System memory multiplier at 2.4B wil run the RAM at DDR2 800. Set the DRAM voltage to what your RAM manufacturer specifies.

    1) the setting just one step lower will be fine (in my opinion setting the MCh/ICH values to stock should run fine at this medium overclock as well).

    2) don't worry about it

    3) G0 is good :)

    Note that you may need more VCore than the other guy here though, every CU is a little different.


  8. #8
    Lsdmeasap's Avatar
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    Default Re: Safe overclock Q6600 with EP45-UD3P

    Hi Mozzle, if you still need more help let me know. The above advice is spot on

  9. #9
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    Default Re: Safe overclock Q6600 with EP45-UD3P

    Thanks guys.

    I'm still a bit confused and need some clarification.

    @Nickel020 - When you say "the MCh/ICH values to stock should run fine" does that mean to set them to specific numbers or leave them at [Auto]?

    I basically need to know which settings I absolutely must set manually for CPU and DRAM as opposed to leaving them at [Auto]. I know most of them from Lsdmeasap's original settings list but when it comes to MCH/ICH and DRAM voltage settings, I'm not certain.

    Thanks for taking the time to help me with this.

  10. #10
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    Default Re: Safe overclock Q6600 with EP45-UD3P

    You MUST Set Vtt and PLL yourself if you are overclocking, Auto way overvolts them in many cases. The rest may or may not need adjusted from stock/auto.

    ICH you may need a little bump 1.14 or so depending on your GFX card and drives connected.

    MCH Will likely need 1.2-1.3+ depending on memory strap used, timings, and overall FSB/Ram speeds

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