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Thread: How to Overclock Q9550 on EP45T-UD3R with DDR3-1600




  1. #1
    JGPliskin is offline Junior Member
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    Default How to Overclock Q9550 on EP45T-UD3R with DDR3-1600

    Hi!! I need some help with my PC. My ram is 1600 but it is downclocked to 1333, I tried to set my FSB to 400 to match the ram but it wont boot, it just beeps and restarts. How can i make my ram work on 1600?

  2. #2
    profJim's Avatar
    profJim is online now Chief Munchkin + moderator
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    Default Re: How to Overclock Q9550 on EP45T-UD3R with DDR3-1600

    Welcome to the forum.


    We need detailed information about ALL OF THE HARDWARE in your system.

    We can best help you after you create a detailed hardware list in the System Specs
    portion of your forum profile at the bottom of the profile page or in your forum signature.
    Be sure to include brand names and model numbers.
    When you are done editing or creating your hardware list, save the settings.

    Running DDR3 memory at its rated speed is often difficult with P35 and P45 motherboards.

    If your memory kit is on Gigabyte's memory compatibility list or if its on the memory manufacturer's compatibility list for your motherboard it will be somewhat easier.

    I'm assuming that your cpu is not overclocked. For starters you can try the following:

    1. Set Performance Enhance to Standard, not Turbo.
    2. Lower your CPU multiplier to 8.0.
    3. Increase CPU Host Frequency from 333 to 366MHz, the new cpu speed will be 2.928GHz.
    4. Set the System Memory Multiplier to 4.0B and your new memory speed will be 1464MHz.
    5. The DRAM voltage should be set to the maximum setting that is printed on the memory module's sticker.

    If your system still does not boot, set MCH Core to 1.20 - 1.24, MCH Core which is too low or too high will not let your system boot. You might need to set MCH Core to 1.28 - 1.30.

    If your system boots, run the Prime95 Large FFT stress test for at least 4 to 8 hours. Run a follow up Prime95 Blend test if there are no errors with the first test.

    If you are not familiar with running Prime95, click on the Prime95 tutorial link in my signature.
    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
    .


  3. #3
    JGPliskin is offline Junior Member
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    Default Re: How to Overclock Q9550 on EP45T-UD3R with DDR3-1600

    Hello Sir, I had followed your guide and this is the result, I will torture test it now.
    Gigabyte GA-EP45T-UD3R F8 | Intel Core 2 Quad Q9550 | 2x4GB SK Hynix HMT351U6CFR8C-PB PC3-12800 DDR3-1600 11-11-11-28 1.5v | HIS Radeon HD 5970 | 1TB Seagate ST1000DM003-1ER162 | Cooler Master Hyper 212X | Thermaltake Smart SE 730w | Windows 7 x64 SP1 Professional

  4. #4
    JGPliskin is offline Junior Member
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    Default Re: How to Overclock Q9550 on EP45T-UD3R with DDR3-1600

    Hello Sir profJim, My PC just finished the torture test and there are no errors on it, what should i do next to achieve 1600?
    Gigabyte GA-EP45T-UD3R F8 | Intel Core 2 Quad Q9550 | 2x4GB SK Hynix HMT351U6CFR8C-PB PC3-12800 DDR3-1600 11-11-11-28 1.5v | HIS Radeon HD 5970 | 1TB Seagate ST1000DM003-1ER162 | Cooler Master Hyper 212X | Thermaltake Smart SE 730w | Windows 7 x64 SP1 Professional

  5. #5
    profJim's Avatar
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    Default Re: How to Overclock Q9550 on EP45T-UD3R with DDR3-1600

    Next:
    1. Lower your CPU multiplier to 7.5.
    2. Increase CPU Host Frequency from 366 to 402MHz, the new cpu speed will be 3.015GHz.
    3. Keep the System Memory Multiplier at 4.0B and your new memory speed will be 1608MHz.


    Sometimes there can be problems when the bus speed is set to 400MHz.

    Repeat the stress test(s).

    If this test is successful you can try using the 8.0 cpu multiplier where the cpu speed will be 3.216GHz.

    Keep in mind that the overall performance will be best with higher cpu speeds, even if the memory speed is slightly lower.

    When you post your next screenshot, click on Memtest's ">>" to show the settings for both memory channels.

    Running HWiNFO's sensor settings will provide useful information for temperatures and voltages.
    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
    .


  6. #6
    profJim's Avatar
    profJim is online now Chief Munchkin + moderator
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    Default Re: How to Overclock Q9550 on EP45T-UD3R with DDR3-1600

    My 3.20GHz screenshot before I completed all stress tests:

    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. #7
    JGPliskin is offline Junior Member
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    Default Re: How to Overclock Q9550 on EP45T-UD3R with DDR3-1600

    Hello Sir, this is the result and i still haven't tortured it. Sir, should i also change the voltage and set it like yours?
    Gigabyte GA-EP45T-UD3R F8 | Intel Core 2 Quad Q9550 | 2x4GB SK Hynix HMT351U6CFR8C-PB PC3-12800 DDR3-1600 11-11-11-28 1.5v | HIS Radeon HD 5970 | 1TB Seagate ST1000DM003-1ER162 | Cooler Master Hyper 212X | Thermaltake Smart SE 730w | Windows 7 x64 SP1 Professional

  8. #8
    JGPliskin is offline Junior Member
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    Default Re: How to Overclock Q9550 on EP45T-UD3R with DDR3-1600

    Sir there was an error after i started to torture test my system, The test type is In-place Large FFTs, there was an error with worker #4, FATAL ERROR: Rounding was 0.5, expected less than 0.4, Hardware failure detected. What should i do sir?
    Gigabyte GA-EP45T-UD3R F8 | Intel Core 2 Quad Q9550 | 2x4GB SK Hynix HMT351U6CFR8C-PB PC3-12800 DDR3-1600 11-11-11-28 1.5v | HIS Radeon HD 5970 | 1TB Seagate ST1000DM003-1ER162 | Cooler Master Hyper 212X | Thermaltake Smart SE 730w | Windows 7 x64 SP1 Professional

  9. #9
    profJim's Avatar
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    Default Re: How to Overclock Q9550 on EP45T-UD3R with DDR3-1600

    Is the maximum rated voltage for your memory = 1.65 volts?

    When tweaking the system to correct errors, it's best to only make one change at a time. If you make multiple changes at one time, you won't know which bios change helped, or if it's worse, you won't know which of the changes caused the problem.

    Manually set CPU PLL to 1.57.
    With CPU PLL set to AUTO, it will be severely over-volted with moderate or high overclocks.
    I always set CPU PLL manually to 1.50 (stock), 1.57 volts or up to 1.59 volts maximum.

    Increasing Cpu Termination from 1.20 to 1.22 might help.
    When overclocking, the Cpu Termination (aka VTT) should be at least 0.05 volts lower than Cpu Vcore.
    With my current 3.825GHz setup, my CPU Termination is 1.30 volts, my CPU Vcore is 1.38750 volts and CPU PLL is 1.57 volts

    Do not copy any of my settings, even though we both have Q9550 processors.
    If your Cpu Vcore setting is on AUTO increasing it one or two clicks might help. Note each click is only 1/160th of a volt, or 0.00625 volts.

    There can a big difference in cpu voltage requirements when comparing two "similar" systems.

    You did a good job describing the Prime95 error, but it's important to report how long Prime95 ran before the error occurred.

    If Prime95 fails within:
    • minutes or up to an hour, your system is not all stable.
    • 1 to 2 hours, your system is marginally stable.
    • 3 -6 hours, your system is somewhat stable
    • 8 -12 hours, your system is very stable, but there is still room for improvement.


    I don't consider my system to be stable until each of the three Prime95 tests has run at least 8 - 12 hours with no errors.

    Years ago the common wisdom was that each of the Prime95 tests had to run for at least 24 hours before the system was considered stable.
    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
    .


  10. #10
    JGPliskin is offline Junior Member
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    Default Re: How to Overclock Q9550 on EP45T-UD3R with DDR3-1600

    Hello Sir, All i can see in the manual is that it is 1.5v.
    Sir, I did what you had told me to do but it is still the same, should i make the voltages higher?
    Just after i start to torture test my system, The worker #2 encountered an error and stopped.
    This is the result sir.
    Gigabyte GA-EP45T-UD3R F8 | Intel Core 2 Quad Q9550 | 2x4GB SK Hynix HMT351U6CFR8C-PB PC3-12800 DDR3-1600 11-11-11-28 1.5v | HIS Radeon HD 5970 | 1TB Seagate ST1000DM003-1ER162 | Cooler Master Hyper 212X | Thermaltake Smart SE 730w | Windows 7 x64 SP1 Professional

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