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Thread: UD3P and Q9550 Overclock Problems




  1. #31
    Ken429 is offline Senior Member
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    Default Re: UD3P and Q9550 Overclock Problems

    Yes and No. I loaded the optimized defaults and then reentered the "changes" manually. I think I have over-thought this whole EP45-UD3P/Q9550 E0 overclocking adventure. I went back today and set the Static tRead Values (Channel A and B) to "Auto". I then changed all the voltages to "Normal". The only settings that I have overridden are the DRAM Timing Control = 5-5-5-15 and the DRAM Voltage to 2.02V, Vcore = 1.36250V (Probably too high?), CPU Termination = 1.34V and MCH Core= 1.34V. I set the CPU Host Frequency to 463 and the System Memory Multiplier to 2.40B (926 MHz) and let OCCT 3.1 run for an hour with no errors. I currently have upped the "FSB" to 470 and the system seems OK but I really haven't put it under load yet. So... it seems I may be on the right track? It looks like the CPU Termination and MCH Core voltages are the key players to get to 3.8GHz and all the rest of the voltage stuff was just getting in the way. Comments please.
    Last edited by Ken429; 09-01-2009 at 09:28 AM.

  2. #32
    profJim's Avatar
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    Unhappy Re: UD3P and Q9550 Overclock Problems

    You're going against the grain if you're using NORMAL instead of AUTO for the voltages that you don't want to set manually.
    I'll let Lsdme (resident guru) comment on this approach.

    You are correct that some voltages are critical to reaching stability when overclocking. Until you've performed extended stability testing that includes running each test for at least 8 - 10 hours (preferably 12 - 24 hours each), you won't know for sure that your system is really stable.

    Unless you had really bad luck and have a sub-standard cpu and mobo, you're voltages are way too high. While excessively high voltages might be stable, you're increasing the heat generated by your system and stressing individual components more that is necessary.

    As an example, these are some settings for a stable Q9550/ep45-ud3p running at 3.80GHz [8.5 x 450]:

    MB Intelligent Tweaker(M.I.T.)
    Robust Graphics Booster ...............:Fast
    CPU Clock Ratio ...........................:8 X
    Fine CPU Clock Ratio.....................:+0.5
    CPU Frequency .................:3.8GHz (450x8.5)

    Advanced Clock Control Press Enter
    CPU Host Clock Control..................:Enabled
    CPU Host Frequency (Mhz) ............:450
    PCI Express Frequency (Mhz) ........:100
    C.I.A.2 .................................:Disabled

    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.).....:Disabled
    (G)MCH Frequency Latch...............:Auto
    System Memory Multiplier ..............2.40B
    Memory Frequency (Mhz) ....1066....:1080
    DRAM Timing Selectable ................:Manual

    Load Line Calibration......................:Disabled
    CPU Vcore................ 1.25000V......:1.26875
    CPU Termination........ 1.200V*........:1.200V
    CPU PLL................... 1.500V*........: 1.500V
    CPU Referennce.......... 0.760V*.......: Auto

    MCH/ICH
    MCH Core................ 1.100V.........:1.280V
    MCH Reference......... 0.760V.........;Auto
    MCH/DRAM Ref........0.900V..........:Auto
    ICH I/O................... 1.500V..........:1.570V
    ICH Core................. 1.100V..........:1.100V

    DRAM
    DRAM Voltage........... 1.800V..........:2.120V <-- different memory
    DRAM Termination...... 0.900V..........:Auto
    Channel A Reference... 0.900V.........:Auto
    Channel B Reference... 0.900V........:Auto
    Q9650 @ 4.10GHz [9x456MHz]
    P35-DS4 [rev: 2.0] ~ Bios: F14
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  3. #33
    Ken429 is offline Senior Member
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    Default Re: UD3P and Q9550 Overclock Problems

    Thank you for staying with me. That is the trouble with the internet - I ended up with way too many cooks in the kitchen and some sound good but don't really know what their doing! Just so I understand, "Normal" = "Stock" even though I have struck it from my BIOS settings? I am guilty of not reading the verbage out to the right of the sample BIOS settings. I have changed all the stuff to this forum's (yours specifically) suggested settings and things are looking pretty good. I'm running at 3.8GHz (8.5 multiplier) and have reduced the voltages to 1.325 Vcore, 1.28 CPU Termination and 1.3 for the ICH Core. The system is running faster and a couple of degrees C cooler! I will keep lowering the Vcore and the CPU Termination until the system is unstable. Just so I understand, my CPU VID is 1.28750V versus the 1.25V and 1.22V I've seen in different postings. I assume that Intel is telling me that this CPU needs/wants a minimum of 1.28750V and to OC I need to be a little higher?

  4. #34
    Ken429 is offline Senior Member
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    Default Re: UD3P and Q9550 Overclock Problems

    Were you right about the voltages. I have reduced the Vcore gradually down to the VID or 1.2875V (running up my electric utility bill with all the 1 hour shots of OCCT). I have also gradually changed the other voltages to the values you gave me. The system keeps on running at 8.5 X 450. I'm about ready to lower the Vcore below the VID? However, I'm not sure that is worth the effort since I have not noticed much of drop in CPU temps after the initial Vcore voltage reductions.

  5. #35
    Acebmxer's Avatar
    Acebmxer is offline Gigabyte Elite
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    Default Re: UD3P and Q9550 Overclock Problems

    For these boards in the bios where you are changing the voltage the column on the left is your default voltages for stock. You can verify that with Core temp it will state the Default VID for your cpu. The lower the vcore usually will require lower volts at higher O.C to be stable but will run hotter then a cpu with a higher VID at same O.C with more volts. I dont know why but thats what alot of people have been noticing.
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  6. #36
    profJim's Avatar
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    Default Re: UD3P and Q9550 Overclock Problems

    Glad to see that you're making good progress.
    Lowering Cpu Vcore lower than the VID is usually only done when you're under-clocking your cpu to run at lower than stock speeds. This is done to lower heat and noise, usually in HTPC systems, where lower fan speeds can be used due to lower heat output.

    ICH Core = 1.10 or 1.20 is usually all that is needed for moderate overclocks.
    The bios settings in post #32 are not guaranteed to work with all systems, but it is an example of reasonable settings for a stable overclock with your cpu and mobo.

    With my Muskin memory, MCH Core = 1.26 - 1.28 works fine for moderate overclocks, and 1.22 - 1.24 is stable at stock settings.
    Once you've completed extended stability testing, post your bios settings and a screen-shot that includes:
    Memset using the SPD and ">>" tabs
    cpu-z main screen
    EasyTune6 --> TUNER tab --> ADVANCE tab --> VOLTAGE tab
    This will let us suggest some additional tweaks for improved memory performance.

    An overclock to 3.91GHz should be easy, using 460 x 8.5 with memory running at 920MHz or possibly 1104MHz. Overclocking to 4.0GHz or higher will take a lot more work.
    Q9650 @ 4.10GHz [9x456MHz]
    P35-DS4 [rev: 2.0] ~ Bios: F14
    4x2GB OCZ Reaper PC2-8500 1094MHz @5-5-5-15
    MSI N460GTX Hawk Talon Attack (1GB) video card <---- SLI ---->
    Seasonic SS-660XP2 80 Plus Platinum psu (660w)
    WD Caviar Black WD6401AALS 640GB (data)
    Samsung 840 Pro 256GB SSD (boot)
    SLI @ 16/4 works when running HyperSLI
    Cooler Master 120XL Seidon push/pull AIO cpu water cooling
    Cooler Master HAF XB computer case (RC-902XB-KKN1)
    Asus VH242H 24" monitor [1920x1080]
    MSI N460GTX Hawk (1GB) video card
    Logitech Z-5500 Digital 5.1 Speakers
    win7 x64 sp1 Home Premium
    HT|Omega Claro plus+ sound card
    CyberPower CP1500PFCLCD UPS
    E6300 (R0) @ 3.504GHz [8x438MHz] ~~ P35-DS3L [rev: 1.0] ~ Bios: F9 ~~ 4x2GB Kingston HyperX T1 PC2-8500, 876MHz @4-4-4-10
    Seasonic X650 80+ gold psu (650w) ~~ Xigmatek Balder HDT 1283 cpu cooler ~~ Cooler Master CM 690 case (RC-690-KKN1-GP)
    Samsung 830 128GB SSD MZ-7PC128B/WW (boot) ~~ WD Caviar Black WD6401AALS 640GB (data) ~~ ZM-MFC2 fan controller
    HT|Omega Striker 7.1 sound card ~~ Asus VH242H monitor [1920x1080] ~~ Logitech Z-5500 Digital 5.1 Speakers
    win7 x64 sp1 Home Premium ~~ CyberPower CP1500PFCLCD U.P.S
    .


  7. #37
    kick's Avatar
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    Default Re: UD3P and Q9550 Overclock Problems

    I dont want to deny anyone the joys of tweaking but
    Accepting for a minute that cpu speed >fsb spped>memory speed unless you have some really great memory u may find it easier to get more performance with memory running at a 2:00 multiplier.

    Also check thru the long threads by Conners and posts by Acebmxer they are the most recent detailed oc on 9550 and 45 ud3p board.
    lots of settings there too.

    In general terms on decent air cooled systems:
    45nm intel 775 quads with intel chipsets you will get around 50% cpu speed increase over stock with around 500fsb being their happiest max.
    cpu core V in bios goes something like
    490fsb 1.3-1.35V(1.29-1.34under load)
    500fsb 1.36-1.40V(1.36-1.39under load)
    510fsb..much higher and things get very hot
    below 490 voltage requirements (for cpu) drop very dramatically towards stock voltage.
    nb the above is mainly from reading posts here and on other forums.

    Personally I may go back to 490 fsb for the rest of my cpu lifetime (its almost a year old),the overall voltage requirements are comparatively low and playing around at 520 fsb feels too much like russian roulette for minimal performance increase.
    Last edited by kick; 09-02-2009 at 07:02 PM.
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  8. #38
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    Default Re: UD3P and Q9550 Overclock Problems

    Ok what did I miss.... I personally can't understand why a person would want to use the sleep function in the 1st place. I mean if your that worried about the cost or wear and tear turn it off. LOL Lets see here for a moment say a computer uses 350 watts an hour times 24 hours a day that would = 8,400 watts... 1000 watts in a kilowatt so 8400 / 1000 = 8.4 kW. Now lets say an average of 11.59 cents per kW. 8.4 X.1159 = .97356 cents in 24 hours x 365 days a year $355.3494 a year.

    Anyway sorry for straying of topic. I'd say the last template profJim provided should work very well for you. (I am running @ 460 fsb) I don't know about you Muskin memory timings or the memory it's self but I hear good things about it from peeps here.

    Also I read back a page or two about profJim providing valuable instruction on you sig and settings. Take it from me and compromise and do it proJims way, you'll be glad you did. And beware of the OC bug, you can feed it and feed it and then when you think your in remission it starts gnawing and gnawing at you to up the FSB speed, then one thing leads to another and the first thing you know weeks of your life are gone.

    Hey but if you want more templates of higher OC's holler.
    Last edited by Conners; 09-03-2009 at 05:11 AM.

  9. #39
    Ken429 is offline Senior Member
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    Default Re: UD3P and Q9550 Overclock Problems

    Response to Conners,
    I have fallen in love with Window Home Server and it likes to wake up computers in the middle of the night and do it's backup routine. I have 3 other computers and WHS does a fine job of keping me out of trouble. On more than one occassion it has save my @@ss. Anyway, I just fell into the Sleep Mode trap because it works on the other computers. You got to understand that my old Pentium 3.2GHz generated enought heat to warm a whole room on a hot day in Indiana! I'll let this one run until someone comes up with a "Sleep" solution. I'll even break down an buy an ATI card if that will solve the problem! I'm still fighting this thing - it ran Prime95 with no errors for over 6 hours and then hard crashed. I have upped the Vcore from 1.30V to 1.31250V and started the Prime95 again. I also upped the CPU Termination to 1.22V. Any suggestions would be appreciated.

  10. #40
    Chike is offline Senior Member
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    Default Re: UD3P and Q9550 Overclock Problems

    The computer can be waken up from shutdown too.
    Another option may be hybernation as compromise between sleep and shutdown.

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