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Thread: Buzzing Noise




  1. #1
    Join Date
    Jan 2009
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    Default Buzzing Noise

    Hi all just recently I have purchased the ep45-ud3r mobo and have noticed a strange soft buzzing noise coming from around the memory slot area. It only starts buzzing when the memory is been stressed for example memtest or P95 blend. Its definitely not coming from any of my fans. Is this normal?

    Thanks

  2. #2
    Lsdmeasap's Avatar
    Lsdmeasap is offline GIGABYTE Guru
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    Default Re: Buzzing Noise

    Are you sure it is not your GFX Card or PSU? Did you try different RAM or Moving the ram around?

  3. #3

    Default Re: Buzzing Noise

    Sounds more like your GFX. Fan coulf probably be touching the heatsink.

    Try different memory modules.
    Nothing is impossible... Just mathematically improbable..

    "The best defense against computer viruses might not even be antivirus software, but a crafty combination of education and common sense."

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  4. #4
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    Default Re: Buzzing Noise

    Thanks for the reply, my CPU and VGA are both water cooled and also the PSU is mounted on the bottom of the case. The noise buzzing noise is coming from the top half of the mobo. It sounds like it might be coming from a capacitor but physically cant see any bulged or leaking ones. I have tried every combination with the memory changed slots, running them in single channel but some problem. Unfortunately those are the only set of DDR2 memory I have. I have also set all my frequency back to stock but made no difference. Thanks

  5. #5
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    Default Re: Buzzing Noise

    Here are my settings if it helps in any way. Also any tips or recommendations that I could change to improve my overall performance. Thanks

    MB Intelligent Tweaker(M.I.T.)
    Robust Graphics Booster ...............: Auto
    CPU Clock Ratio ..........................: 8
    Fine CPU Clock Ratio.....................:.0
    CPU Frequency ...........................: 3800


    Clock Chip Control
    Standard Clock Control
    CPU Host Clock Control..................: [Enabled]
    CPU Host Frequency (Mhz) ............: 475Mhz
    PCI Express Frequency (Mhz) .........:Set to 100

    C.I.A.2 .................................:[Disabled]


    Advanced Clock Control [Press Enter]
    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...............: 333 (my UPS doesnt like the 400 latch PC restarts on cold starts Weird)
    System Memory Multiplier ..............: 2B
    Memory Frequency (Mhz) ..............: 950
    DRAM Timing Selectable ................: [Manual]

    Standard Timing Control
    CAS Latency Time........................5
    tRCD .........................................5
    tRP'...........................................5
    tRAS..........................................15

    Advanced Timing Control
    tRRD...........................................Aut o
    tWTR..........................................Auto
    tWR............................................Aut o
    tRFC...........................................Aut o
    tRTP...........................................Aut o
    Command Rate (CMD) ....................:0 Auto

    Driving Strength Profiles
    Driving Strength ............................Auto

    Channel A
    Static tRead Value.........................:9 Auto
    tRD Phase0 Adjustment...................:<<< Leave for all below as well
    tRD Phase1 Adjustment...................:Auto
    tRD Phase2 Adjustment .................:Auto
    tRD Phase3 Adjustment..................:Auto
    Trd2rd(Different Rank)....................:Auto
    Twr2wr(Different Rank)...................:Auto
    Twr2rd(Different Rank)...................:Auto
    Trd2wr(Same/Diff Rank)..................:Auto
    Dimm1 Clock Skew Control...............:Auto ps
    Dimm2 Clock Skew Control...............:Auto ps

    Channel B
    Static tRead Value.........................:9 Auto
    tRD Phase0 Adjustment...................:<<< Leave for all below as well
    tRD Phase1 Adjustment...................:Auto
    tRD Phase2 Adjustment .................:Auto
    tRD Phase3 Adjustment..................:Auto
    Trd2rd(Different Rank)....................:Auto
    Twr2wr(Different Rank)...................:Auto
    Twr2rd(Different Rank)...................:Auto
    Trd2wr(Same/Diff Rank)..................:Auto
    Dimm1 Clock Skew Control...............:Auto ps
    Dimm2 Clock Skew Control...............:Auto ps

    Motherboard Voltage Control
    Voltage Type.………... Manual
    CPU
    CPU Vcore….……….........................:1.425
    CPU Termination…..... 1.200V*.......: <<< 1.20
    CPU PLL…………………....1.500V*.......: << 1.50

    CPU Referen.…………....0.755V*.......: <<<Auto

    CPU Reference2………,,0.800V*.......:<<< .67% Of Vtt (Termination above) Auto Will set this correctly

    MCH/ICH
    MCH Core…………….....1.100V...........: << 1.22
    MCH Reference….…….0.800V...........; <<< Auto
    MCH/DRAM Ref.…......0.900V...........: <<< Auto
    ICH I/O……………….....1.550V............: <<< 1.50
    ICH Core…………...……1.100V............: <<< 1.1

    DRAM
    DRAM Voltage ……....1.800V............: 2.00
    DRAM Termination .…0.900V............: <<< Auto
    Channel A Reference 0.900V............: <<< Auto
    Channel B Reference 0.900V............: <<< Auto

    Advanced Settings
    Limit CPUID Max. to 3.....................: [Disabled]
    No-Execute Memory Protect............: [Enabled]
    CPU Enhanced Halt (C1E)................: [Disabled]
    C2/C2E State Support....................: [Disabled]
    x C4/C4E State Support..................: [Disabled]
    CPU Thermal Monitor 2(TM2) ...........: [Enabled]
    CPU EIST Function.........................: [Disabled]
    Virtualization Technology................: [Disabled]

    System specs:
    E6750, 8800GTS (G80), ep45-ud3R (F5), TX650W and XMS2 PC6400 2x1GB

  6. #6

    Default Re: Buzzing Noise

    That sound is coming from the ferrite chokes around the CPU. They are part of the voltage step/switching/phase controller of the CPU.

    Some of the coil's copper wire turns vibrate at some resonating audible frequency due the high current square wave switching, it is generated by lack of the glue encapsulation that supposed should be there just to avoid that noise.

    Usually the sound stops keeping the CPU at full throttle (C1E, C2E, etc...) but I saw that your already did that in BIOS. Probably under OC the noise can be reduced or even silenced, but, who knows?

    So live with it or ask for a board replacement, unfortunately if that I wrote above is your case, there is noting that you can do.
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  7. #7
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    Default Re: Buzzing Noise

    Thanks for the help, it sounded around the CPU area but I thought it was a cap instead =). Its strange tho I could ran P95 smallfft, wprime and cinebench10 without the buzz then when I try blend or any other program which stresses the memory I can hear the annoying sound. So should I get a replacement or will it run perfectly and safe? Thanks again

  8. #8

    Default Re: Buzzing Noise

    Your issue is only about noise, perfectly safe, nothing will explode soon so, if you can manage to live with that weird sound you can keep the board for sure.
    Really there was not memory stress, what you got was 100% CPU current flowing by the ferrite chokes lowering its Q and stopping the vibration. So, less CPU current more annoying noise you hear.
    Since you are on water the noise appear amplified, an hypothetical air cooler could hide the buzz.
    GA-Z97-D3H Windows Pro 8.1
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    Corsair CX750M
    Samsung SSD 840 EVO 500 GB

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  9. #9
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    Default Re: Buzzing Noise

    Thanks mate you have been a huge help. I have also read that heatpipes generally do makes that same noises, and that it is because of the evaporating liquid inside them that does it which is normal to. BTW how did you rule out a faulty capacitor issue? Thanks

  10. #10
    Join Date
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    942

    Default Re: Buzzing Noise

    BTW how did you rule out a faulty capacitor issue?
    I've never heard a modern day elecrolytic capacitor make a noise, except when the pressure plug pops - indicating there is a fault, ie the capacitor has gone short circuit. Other components such as Chokes can make more noise if a decoupling capacitor has gone open circuit.

    However as SVC explained above (and he is correct), Ferrite Chokes do "Ring" when under any "specific" load. It's when they enter this specific state, that the windings "ring" in sympathy with the current/ type of waveform passing through them.
    They may not "ring" at lower load or even high load. Often it has to be a specific combination, a bit like the Opera Singer shattering the glass!

    Chokes that "Ring" are very common. It's like anything, some makes make more noise than others, so do different types. No doubt if money wasn't such an issue (as it is in the PC component market), then we would probably see (or hear quieter boards). Military and Medical electronics usually have higher ratings and better build, but usually in different areas, but then that costs more.

    Either which way the noise isn't usually a sign of a problem, but simply an audible nuisance.
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