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Thread: BUS spikes to 102MHZ, what to do ??

  1. #1
    gnr_tb is offline Junior Member
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    Question BUS spikes to 103MHZ, what to do ??

    Hi
    Z77 D3H , 3570K
    Tried to flash last beta bios F19I and last stable F18 bios.
    Tried occt, CPU-Z , AIDA64 to see the bus speed, it spikes to 103 sometimes, idle or load, doesn't matter.
    My bus spikes to 103MHZ sometimes, that also spikes my CPU speed and ruin my OC-ability because I have to aim the voltage by the max cpu speed, and going from 4.7 to 4.85 is a huge deal when it comes to ivy , it can be 1.3v to 1.4v and worse.
    Tried to unplug power+battery all night.
    Tried to lock it manually to 102MHZ - then it spikes to 104MHZ!
    Please help me out . I can't RMA it , they just see my pc works fine (on default cpu speed of course) and send me back home ..
    Plz some ideas ? :( :(

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    Last edited by gnr_tb; 07-07-2013 at 02:05 AM.

  2. #2
    wazza300's Avatar
    wazza300 is online now Sloth Fratelli-Moderator
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    Default Re: BUS spikes to 102MHZ, what to do ??

    tried 99 bclk manually and see where that takes you? or 98?
    Gigabyte z77x UP4-TH F11c Modded Bios
    Intel i7 3770k 24/7@4.8ghz 1.38v Turbo llc +0.165v dvid multithreading enabled
    Samsung Green(MV-3V4G3D/US) 8GB @2133mhz 9-10-10-21-1t 1.55v
    Thermalright Silver Arrow Cpu Cooler
    1xSamsung 840 pro 256 Gb SSD windows 8.1 pro 64bit
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    Powercolor 7970 3gb V3 @1150mhz core/1700mhz mem,1.150v Accelero aftermarket air cooler 55c max
    Razer Lycosa Keyboard
    Logitech X-530 5.1 Speakers
    Lite-On iHAS124-19 24x Sata DVDRW
    K-World Hybrid DVB-T 210SE Digital T.V Card
    L.G E2260V L.E.D 1920x1080 Monitor
    Xfx Pro 750w silver rated Psu 80+
    Fractal Arc Midi Case

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  3. #3
    gnr_tb is offline Junior Member
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    Default Re: BUS spikes to 102MHZ, what to do ??

    Just did ... it goes to 101mhz , and if I would wait, probably 102

  4. #4
    wazza300's Avatar
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    Default Re: BUS spikes to 102MHZ, what to do ??

    seems very odd for it to spike like that

    does it do it under stress test or just at idle?

    have you left out the cmos battery a good 30 minutes and load optimised defaults and re enter your bios/oc settings

    on my board I set to 100mhz and it stays there no matter what
    Gigabyte z77x UP4-TH F11c Modded Bios
    Intel i7 3770k 24/7@4.8ghz 1.38v Turbo llc +0.165v dvid multithreading enabled
    Samsung Green(MV-3V4G3D/US) 8GB @2133mhz 9-10-10-21-1t 1.55v
    Thermalright Silver Arrow Cpu Cooler
    1xSamsung 840 pro 256 Gb SSD windows 8.1 pro 64bit
    1xSamsung f4 HD204UI 2tb hard drive Storage
    Powercolor 7970 3gb V3 @1150mhz core/1700mhz mem,1.150v Accelero aftermarket air cooler 55c max
    Razer Lycosa Keyboard
    Logitech X-530 5.1 Speakers
    Lite-On iHAS124-19 24x Sata DVDRW
    K-World Hybrid DVB-T 210SE Digital T.V Card
    L.G E2260V L.E.D 1920x1080 Monitor
    Xfx Pro 750w silver rated Psu 80+
    Fractal Arc Midi Case

    http://i38.tinypic.com/14myvfa.jpg x58 ud5 <=3.8ghz + 4.2ghz Overclock Template!!
    http://www.youtube.com/user/warren304#p/u Visit Me On Youtube

    Lots Of Gaming Videos With X58 Ud5 System And Gpu On My Youtube Channel!!
    Just Uploaded New Battlefield 4 Video!!!!!!!!!!!!!!!!!!!!!!

  5. #5
    gnr_tb is offline Junior Member
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    Default Re: BUS spikes to 102MHZ, what to do ??

    both stressed and idle ...
    yes I put out the battery and left clr cmos for the night (unplugged power cable of course).
    By the way, I looked at older OCCT runs and saw those spikes in all of them. Turns out it was always there and I didn't notice. It wonders around 100.10-100.11 (for example) all the time by the way, can this explain microstutter in games ?Name:  2013-07-04-13h46-Frequency-Bus.png
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    Last edited by gnr_tb; 07-07-2013 at 04:02 AM.

  6. #6
    gnr_tb is offline Junior Member
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    Default Re: BUS spikes to 102MHZ, what to do ??

    double posting to add another pic ...
    on certain voltage I get pretty stable vcore on load.
    at 1.340 for example, llc=high, I get this :
    Name:  2013-07-06-23h21-Voltage-CPU VCORE.png
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    on llc=medium I get drops like 1.300v . On extreme I didn't try 1.340, but on 1.300 it would get to 1.370 !
    weirdly enough I see you all use extreme LLC to get the same vcore at load and idle, but also I had a z77-d3h rev 1.1 before RMA (this current awesome sample is 1.0) and it used to have huge vcore bumps on extreme llc as well ...

  7. #7
    wazza300's Avatar
    wazza300 is online now Sloth Fratelli-Moderator
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    Default Re: BUS spikes to 102MHZ, what to do ??

    its normal for the bclk to fluctuate like this 100.10-100.11 ect but it shouldn't jump from 100 to 103 or 104

    cpu voltage will spike up and down depending on the load put on the cpu,it doesn't matter what llc level you use aslong as it doesn't go above your stable voltage needed for your overclock,its just a matter of finding the right llc and dvid combination,i don't use fixed cpu voltages as the cpu can't throttle at idle

    if you set 47x100 it should stay at that,leave all turbo multipliers on auto
    Gigabyte z77x UP4-TH F11c Modded Bios
    Intel i7 3770k 24/7@4.8ghz 1.38v Turbo llc +0.165v dvid multithreading enabled
    Samsung Green(MV-3V4G3D/US) 8GB @2133mhz 9-10-10-21-1t 1.55v
    Thermalright Silver Arrow Cpu Cooler
    1xSamsung 840 pro 256 Gb SSD windows 8.1 pro 64bit
    1xSamsung f4 HD204UI 2tb hard drive Storage
    Powercolor 7970 3gb V3 @1150mhz core/1700mhz mem,1.150v Accelero aftermarket air cooler 55c max
    Razer Lycosa Keyboard
    Logitech X-530 5.1 Speakers
    Lite-On iHAS124-19 24x Sata DVDRW
    K-World Hybrid DVB-T 210SE Digital T.V Card
    L.G E2260V L.E.D 1920x1080 Monitor
    Xfx Pro 750w silver rated Psu 80+
    Fractal Arc Midi Case

    http://i38.tinypic.com/14myvfa.jpg x58 ud5 <=3.8ghz + 4.2ghz Overclock Template!!
    http://www.youtube.com/user/warren304#p/u Visit Me On Youtube

    Lots Of Gaming Videos With X58 Ud5 System And Gpu On My Youtube Channel!!
    Just Uploaded New Battlefield 4 Video!!!!!!!!!!!!!!!!!!!!!!

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