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Thread: Z77A-GD65 + i5 2500K Overclocking - How to start?




  1. #11
    profJim's Avatar
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    Default Re: Z77A-GD65 + i5 2500K Overclocking - How to start?

    I only use it as GPlops test and quick stability test.
    How do you enable a GPlops test?

  2. #12
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    Default Re: Z77A-GD65 + i5 2500K Overclocking - How to start?

    Actually it doesn't get too hot, the softwares just won't work when LinX is used, however, that doesn't happen with IBT and I am able to monitor all the temps.

    At 4.6GHz I'm idling @ 29-35C and 69-74C at full load with 6637MB used in IBT (Ambient around 24C, have the Air-con working hard :))

    Just finished 20 passes of stress testing at Very High with IBT and then another 20 passes with Maximum Stress setting of 6637MB, I deem 4.6GHz stable atm, will run P95 overnight just to make sure however... :)

    Screenshot:


    My voltages currently are:

    Vcore - 1.37 (Droop to 1.352 at full load)
    S/A - 0.965
    I/O - 1.07
    PLL - 1.85

    Bernhard from the MSI forums stated that:

    "As far as I remember, the 1,89V should be the absolute max for the PLL. SA absolute max is 0,971V, I/O is listed as 1,05V +3% as absolute max."

    Seems like my S/A and I/O are quite close to the max, I'd like to try again with

    Vcore - 1.37
    S/A - 0.945
    I/O - 1.05
    PLL - 1.84

    What do you guys think?
    CPU: i5 2500K @ 4.5GHz (45x100 1.35V) ~ BIOS 10.5
    Motherboard: MSI Z77A-GD65
    Memory: 2x4GB Corsair Vengeance DDR3-1600 9-9-9-24
    GPU: XFX Radeon 7950 Black Edition 3GB
    Soundcard: Native Instruments Audio 8 DJ
    HDD: WD 1TB Caviar Blue
    Cooling: Zalman CNPS10X Extreme
    PSU: Seasonic X-650 80+ Gold
    Case: Corsair Obsidian 650D

    OS: Windows 7 Ultimate x64
    Gamepad: Microsoft XBOX360 Wireless Controller + Wireless Gaming Receiver
    Wireless Set: Logitech Cordless Desktop LX710
    Monitor: LG 42LE5300 42" Led FHDTV [1080p @ 60Hz]

  3. #13
    Chike is offline Senior Member
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    Default Re: Z77A-GD65 + i5 2500K Overclocking - How to start?

    I've seen people using SA over 1.1v, haven't tracked their CPU condition over time.

    Have you tried a lower PLL? Not sure about SB but some new processors work better with under default PLL.

    I'd keep pushing it without IBT get it stable Prime95 small FFT for several hours instead.

  4. #14
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    Thumbs up Re: Z77A-GD65 + i5 2500K Overclocking - How to start?

    There are some absolutes when it comes to bios voltage settings.
    Some settings can be somewhat higher than Intel's design specs, other settings should never be exceeded.
    People can tell you from their experience what generally works.
    The goal is to use the lowest stable voltage settings.

    Go ahead and test with lower voltages, but only change one setting at a time and re-test.
    Changing more than one variable at a time makes it impossible to know which settings caused the failure.

    Make sure that you are using the IBT and Linx versions that support AVX testing.
    I suggest limiting IBT or Linx testing to 5 loops using all available memory.
    These two programs are fine for preliminary stress testing only.
    Using Prime95 and/or HCI Memtest in windows is a far more rigorous and reliable stress test.
    Your GPlops** scores are excellent and comparable with Ivy Bridge results.
    Your maximum vcore temperatures are almost 20o (C) lower than with Ivy Bridge processors.

    ** sorry, I can't get my mind out of the gutter
    Q9650 @ 4.10GHz [9x456MHz]
    P35-DS4 [rev: 2.0] ~ Bios: F14
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  5. #15
    Chike is offline Senior Member
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    Default Re: Z77A-GD65 + i5 2500K Overclocking - How to start?

    It is obvious from his plops that he is using AVX version of IBT.

  6. #16
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    Default Re: Z77A-GD65 + i5 2500K Overclocking - How to start?

    It is obvious from his plops that he is using AVX version of IBT.
    Good point, you're right.

  7. #17
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    Default Re: Z77A-GD65 + i5 2500K Overclocking - How to start?

    We're in business, I tested 4.6 with IBT on Maximum Stress with 6800MB, top temp was 70C (Zalman CNPS10X is a champ :)), 4.6 was fully stable for 10 passes of IBT on the following voltages:

    Vcore - 1.37
    S/A - 0.945
    I/O - 1.05
    PLL - 1.84
    PLL Overvolt - Enabled
    Digital Compensation Level - High
    EIST, C1E, C-State, Overspeed Protection, Tubo, EuP 2013, Phase Control - All Disabled.

    I peaked 124 GFlops in 134 seconds, highest I ever got :)

    As I suspected, it was just the Vcore that needed a little boost, however, when I tried PLL at 1.82 I got a BSOD after 5 IBT passes, so I left it at 1.84.

    This is a 100% pure raw OC, just as I like it :)

    Going for P95 all night long now, hopefully when I wake up tomorrow morning all threads will still be running :) BTW, what's the most effective way to test Prime? I usually just use the default Blend test, without increasing RAM, right now it's using 2.5 gigs of RAM, I tried to test it once with all the available RAM in Custom Blend but it wouldn't stress the CPU at all, only the RAM usage was high...

    Thanks
    Last edited by Zach_; 06-18-2012 at 06:12 AM.
    CPU: i5 2500K @ 4.5GHz (45x100 1.35V) ~ BIOS 10.5
    Motherboard: MSI Z77A-GD65
    Memory: 2x4GB Corsair Vengeance DDR3-1600 9-9-9-24
    GPU: XFX Radeon 7950 Black Edition 3GB
    Soundcard: Native Instruments Audio 8 DJ
    HDD: WD 1TB Caviar Blue
    Cooling: Zalman CNPS10X Extreme
    PSU: Seasonic X-650 80+ Gold
    Case: Corsair Obsidian 650D

    OS: Windows 7 Ultimate x64
    Gamepad: Microsoft XBOX360 Wireless Controller + Wireless Gaming Receiver
    Wireless Set: Logitech Cordless Desktop LX710
    Monitor: LG 42LE5300 42" Led FHDTV [1080p @ 60Hz]

  8. #18
    profJim's Avatar
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    Default Re: Z77A-GD65 + i5 2500K Overclocking - How to start?

    With Prime95, are you going to run each of the three tests, small FFT, large FFT, and Blend for at least 6 - 8 hours each?
    Lsdme feels that HCI Memtest is as good as Prime95 and it doesn't take nearly as long to run.
    You can run several instances at one time for several hours until the memory coverage has completed at least 100% - 200% coverage.
    HCI MemTest: RAM reliability tester for Windows
    Check out the Manual and Support + FAQ pages for details.
    Download the free version now and you can optionally buy the Pro version for $5 or the Deluxe version for $14.
    When you buy, email delivery is cheapest for international orders.

    Zach_
    Please add a detailed hardware list to your forum signature.
    Note: as of now, the PC Specs feature still hasn't been fixed.
    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
    .


  9. #19
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    Default Re: Z77A-GD65 + i5 2500K Overclocking - How to start?

    Actually I was just thinking of running Blend for 10-14 hours and deem the system stable, as it tests both Large and Smal FFTs, isn't that enough?

    After running Blend for 10 hours I have no problem running another couple of hours of HCI, but if IBT and P95 is enough, then I'm fine with it, just let me know if I am testing correctly on P95.

    Thanks
    CPU: i5 2500K @ 4.5GHz (45x100 1.35V) ~ BIOS 10.5
    Motherboard: MSI Z77A-GD65
    Memory: 2x4GB Corsair Vengeance DDR3-1600 9-9-9-24
    GPU: XFX Radeon 7950 Black Edition 3GB
    Soundcard: Native Instruments Audio 8 DJ
    HDD: WD 1TB Caviar Blue
    Cooling: Zalman CNPS10X Extreme
    PSU: Seasonic X-650 80+ Gold
    Case: Corsair Obsidian 650D

    OS: Windows 7 Ultimate x64
    Gamepad: Microsoft XBOX360 Wireless Controller + Wireless Gaming Receiver
    Wireless Set: Logitech Cordless Desktop LX710
    Monitor: LG 42LE5300 42" Led FHDTV [1080p @ 60Hz]

  10. #20
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    Default Re: Z77A-GD65 + i5 2500K Overclocking - How to start?

    Quote Originally Posted by Zach_ View Post
    Actually I was just thinking of running Blend for 10-14 hours and deem the system stable, as it tests both Large and Smal FFTs, isn't that enough?

    After running Blend for 10 hours I have no problem running another couple of hours of HCI, but if IBT and P95 is enough, then I'm fine with it, just let me know if I am testing correctly on P95.

    Thanks
    What price for stability?
    My preference with Prime95 testing is to run each test for at least 10 - 12 hours or longer.
    I've found that Prime95 will sometimes run error free for over 10 hours for one or two of the tests, but fail the third test, sometimes only after 8 - 12 hours. If your system isn't stable, you run the risk of file corruption. A 14 hour Blend test is similar to running the small and large FFT tests for 7 hours each.
    • The Small FFT test primarily stresses the cpu with very little memory testing.
    • The Large FFT test heavily stresses the memory sub-system.
    I'm comfortable with running Prime95 Blend for 12 - 14 hours, followed by HCI Memtest for at least 8 -12 hours.
    As stated earlier, IBT or Linx are good for short preliminary stress testing only, and their GFlops scores are a good indication that your system performance is in the ballpark.

    Click on the Prime95 tutorial link in my signature for more information.

    just my 2 cents
    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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