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Thread: Help with OC




  1. #1
    nadasaki's Avatar
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    Default Help with OC

    Hey guys!
    My specs are:


    PSU: Chieftec 550W
    CPU: core2duo e7200 2.53 (default clock) (factory cooler)
    RAM: Mushkin 4GB DDR2 1066
    MoBo: Gigabyte P31-S3G
    BIOS ver.: F7a
    GPU: Gainward 8800gt

    I would like to get the best out of this conf and thought I'd start with OCing the CPU
    My BIOS currently looks like this:





    I'm not very familiar with the connection between voltage and frequency/multiplier increments...


    Please give me examples of what should I try for starters as this is my first OC attempt.
    For now it's 9.5 x 266 as you can see.
    So would you recommend lowering the multiplier and increasing the freq?
    How high would recommend me to try it?


    Ultimately, I would like to run my CPU at 3.0GHz-ish with my RAM on 1066... is that possible?

  2. #2
    profJim's Avatar
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    Default Re: Help with OC

    See http://forums.tweaktown.com/memory/5...tml#post448456, post #9 where I show that I'm pretty sure that your memory is not 1066MHz rated.
    At the bios main screen, press CTRL + F1 to show hidden settings where you should be able to manually set memory timings in the MIT section.
    Don't worry about memory speed, you will get much better system performance with the highest possible FSB.
    You will probably need to use 5-5-5-15 or up to 6-6-6-18 settings with 800MHz memory speeds.
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  3. #3
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    Default Re: Help with OC

    Quote Originally Posted by profJim View Post
    See http://forums.tweaktown.com/memory/5...tml#post448456, post #9 where I show that I'm pretty sure that your memory is not 1066MHz rated.
    At the bios main screen, press CTRL + F1 to show hidden settings where you should be able to manually set memory timings in the MIT section.
    Don't worry about memory speed, you will get much better system performance with the highest possible FSB.
    You will probably need to use 5-5-5-15 or up to 6-6-6-18 settings with 800MHz memory speeds.
    Hey there! I've also reached the same conclusion when I was browsing through Mushkin website... Bummer.
    Well I've been ripped off, but at least it's not faulty.
    I'll try some OCing tonight and I'll post results. Thanks for the help so far! :)

  4. #4
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    Default Re: Help with OC

    Keep your memory in the 700 - 850MHz range while overclocking, probably using 6-6-6-18 timings at 2.0 - 2.1 volts.
    cpu speed = FSB x cpu multiplier
    memory speed = FSB x SMP (system memory multiplier)
    For example:
    cpu = 300 x 9.5 --> 2850MHz and memory = 300 x2.4 --> 720MHz
    cpu = 333 x 9.5 --> 3164MHz and memory = 333 x2.4 --> 800MHz, and using 2.0 SMP memory speed will be 333 x 2.0 =666MHz
    cpu = 375 x 9.5 --> 3562MHz and memory = 375 x2.4 --> 900MHz, and using 2.0 SMP memory speed will be 375 x 2.0 =750MHz
    cpu = 400 x 9.0 --> 3600MHz and memory = 400 x2.4 --> 960MHz, and using 2.0 SMP memory speed will be 400 x 2.0 =800MHz

    Your best overall performance will be at XXXXMHz where you are using the highest possible FSB with a somewhat lower cpu multiplier.
    Once you've reached your cpu goal, you can find the best possible memory settings with tighter (lower) memory settings and slightly lower memory speeds or looser timings with somewhat higher memory speeds. On both of my DDR2 systems with 1066MHz memory, I run 4-4-4-10 or 12 memory timings with memory speeds at 856 and 876MHz. Your memory will possibly need 6-6-6-18 timings with memory speeds in the mid to upper 800MHz range.

    Memtest86+ is the best preliminary memory testing tool because you boot from a bootable floppy, usb, or optical drive.
    One full test loop will take about 20 - 25 minutes and each additional test loop will take twice as long.
    A less thorough but quicker test is to run the #5 test for 10 loops by pressing the following keys: c 1 3 5 ENTER 0 (zero) when the test starts.
    Memtest86+ - Advanced Memory Diagnostic Tool
    Downloads are near the middle of the web page.

    Check out http://forums.tweaktown.com/gigabyte...ing-guide.html for more information.
    Last edited by profJim; 01-19-2013 at 02:45 AM. Reason: add o/c thread link
    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
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  5. #5
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    Default Re: Help with OC

    Hey,
    I just meddled with the settings a bit. Got to work at 3.16GHz (333x9.5) 1:1 with my mem at 667
    The first few times I got the BSOD and I really panicked. The problem was that I didn't increase the CPU Voltage. The default value is 1.225v so I've set it to 1.325v and got it to boot to windows properly.

    One thing though, Core Temp app shows some weird stuff. It looks almost as if the cpu speed varies from 2,66 ~ 3.2 and the voltage also varies from 1.115 to 1.225 (???)
    Max temp 62 with a 50 being the average.

    Should I try to increase the FSB more? How much should I increase the voltage? Up to 1.4 maybe?
    I really don't want to fry anything because this is my only working configuration at the moment...

    EDIT:
    The multiplier dropped to 6 automatically during work then went up to 9.5 in the next few minutes...
    I've gotta be doing something wrong...

    EDIT2:
    I've increased the voltage to 1.35 and having 68c at 100% load. Clock and voltage stabilized as shown in CoreTemp.
    System working at 333x9.5 (3.16GHz) and 2.4x333 ( 800MHz) at 5-6-6-18-52
    Any advice?
    Last edited by nadasaki; 01-19-2013 at 04:54 AM.

  6. #6
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    Default Re: Help with OC

    Check your bios settings, you probably have EIST and C1E enabled which will automatically lower the cpu multiplier and speed with lower loads.
    I overclocked by E6300 (R0) with both settings disabled to help with stability.
    After I reached my final o/c settings, I enabled both settings to lower heat and electrical power when the system is under lower loads.
    With win7, I'm using Balanced Power Settings.
    My max cpu settings is 438MHz x 8.0 (3.50GHz) and my multiplier varies from 8.0x to 6.0x with a minimum cpu speed = 2628MHz and cpu VID down to 1.1000 volts.


    You're raising your cpu voltage way too quickly, do it in much smaller steps.
    My cpu vcore was raised from 1.2750 at stock (2.80GHz) to 1.38750 at 3.50GHz, but the amount you need to increase cpu vcore can vary quite a bit based on how "good" your cpu is. What is the brand/model number of your cpu cooler and cooling fan?

    You need to repeat all of your stress tests if/when you re-enable these settings.
    Which stress tests are your running and for how long? Prime95? OCCT? Other tests?
    Last edited by profJim; 01-19-2013 at 05:07 AM.
    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
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  7. #7
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    Default Re: Help with OC

    CPU has the stock cooler and one very cheap medium sized cooler on the back of the case.
    I'm running BOINC which keeps my CPU really busy all the time and so far the max temp was 70c
    I'm happy with the current clock, but as I understand, you recommend decreasing the multiplier and increasing FSB?
    I guess the next step is to try decreasing the voltage in steps to find a stable setting at lower temperature...

    About the memory (stock 667MHz at 5-5-5-12) now at 800MHz 5-6-6-18
    Should I try to to reduce the timing?

  8. #8
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    Default Re: Help with OC

    I'm not familiar with BOINC and you'll need a better cpu cooler/fan setup to push your cpu FSB higher.
    You've got older hardware and running near 70o (C) for extended periods is a bit higher than I'm comfortable with.

    Now would be an excellent time to run a 4 - 8 hour Prime95 Blend test to see if your system is reasonably stable.
    If a single worker error occurs, your system is NOT stable.
    Make sure that Round Off Checking is enabled before you start the torture test.
    There is a Prime95 Tutorial link in my signature.
    Happy testing!

    Help with OC-prime95-round-checking-enabled-png
    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
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  9. #9
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    Default Re: Help with OC

    If there are any Prime95 errors, post a cropped screen-shot of Prime95 that shows the error that occurred and the FFT size along with CPU-Z CPU, Mainboard, Memory, and SPD windows. You can run several instances of CPU-Z at any time, with one instance for each CPU-Z window.

    Your screen-shot will be legible if the picture width is between 800 - 1000 pixels.
    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
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  10. #10
    kick's Avatar
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    Default Re: Help with OC


    Just as an extra:
    A decent aftermarket cpu cooler is supposed to give aprrox 10C lower max cpu temps,on an overclocked cpu, at full load compared to an intel one (providing the pc has reasonable airflow)

    Ive never had an intel cooler so thats just what Ive read.
    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

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