Neo4 vcore fluctuating BAD

Ok, been workin on my neo4 board for about 2 weeks now and i've had a constant problem, from stock voltage to 1.65v, the vcore fluctuates horribly.  i have it set at 1.65 and it'll dip all the way down to 1.58v, then raise alllll the way back up to 1.66 volts.
MSI Neo4-f w/ latest bios (11-7-2005)
AMD64 3500+ Venice E6
1 gig corsair xms3200xl
550w Antec truepower psu dual 12v rails
Radeon x800xl
and thats about all you needa know for this part.  I hit 2.6 GHz, but my vcore was fluctuating so bad that i dropped it back down, didn't want to damage anything.  any help is appreciated on this issue :(

I have the same problem but at 1.539 (the max it allows for my chip)------> drops to 1.488.  Im pretty sure its my PSU being overloaded, even though the other voltages are rock solid.  This board requires alot of amps on the 12 v rail.  The reason I think what i do, is when my PSU is cold, the volts stay up, as soon as Ive been running for awhile they drop.  Check your other voltages, if their low, its definetly the PSU, or if the CPU goes to 100% and they drop considerably then again.

Similar Messages

  • Neo4-F, Fluctuating vCore

    Here's the graphs. I didn't include the voltages because they're nowhere near accurate. As I was watching the voltages on the screen, I monitored them with a multimeter, and they're not even close. Oh well. At least the temps look acurate.
    Edit: The "Case Temperature" is actually the NF4 sensor. The thing I'm concerned about is the vCore fluctuations (3rd pic). The beginning and end goes way down because I'm running CrystalCPUID to lower voltage/multiplier when the CPU's at idle, but the rest of the time it's jumping all over the place. I wonder if there's a hardware mod to fix this problem...
    NOTE:
    On the vCore graph: At 2 minutes the vCore goes up due to CPU usage being above 60% (set by CrystalCPUID). The same happens at 26 minutes (CPU usage goes below 60%).

    Well how can you explain the vcore goin' from 1.3v to 1.65 from idle to load .
    If you have installed the AMD cpu driver , revert back to microsoft default processor.sys.
    What do you have as startupVID in bios , and whats the percentage overVID if used .
    And don't use the special features in crystalCPUID as they "can" start CnQ by using p-states (AMD powernow) .
    CnQ on/off in bios is only related to corecentre/corecell chip and doesn't turn off p-states.

  • Question vcore fluctuates

    Hello all I got my new z97 mpower max ac up & running with a 4790k, This is my first msi board and it's awesome really enjoy it. My question is and I have never seen vcore fluctuate so extreme as on this board. My cpu ratio is 46 with vcore at 1.270 not bad, but I have noticed with cpuz I get reading from as low as 0.005 to 0.250 but never what I set it to, on all my other boards that never happens if I set vcore to say 1.250 that's what cpuz reads or at least very close to that. I'm not complaining or anything just wondering why this board does that. I use the latest bios 1.4.. Thanks for any info

    Normal as far as I know. It fluctuates as per load and when the power saving features respond. Connect a DMM to the checkpoint header and you will probably see the same variations in voltage taking place.

  • Vcore fluctuates on PT880-FSR

    Core Center reports my Vcore to fluctuate from 1.520 to 1.54 about every 3 seconds. Is this good or bad? I have overclocked my [email protected] without any voltage tweaks and its stable so far. I plan to overclock more (@3.2) so I would be raising my Vcore. Would the fluctuation matter? Thanks.

    I would say it´s normal and should not be any problem.
    All differant MoBo models, CPU´s, PSU´s, I have owned always had some fluctation.
    The onés I use now have variations between 1.46- 1.52, ( stable mid at 1.5v) and OC:ed with default vcore and measured by speedfan. The values changes every 10-15 sec.
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    This do not effect any stability or performance what I have noticed.

  • Apparent VCore fluctuations

    I'll start by saying that I generally treat software voltage reading with a healthy pinch of salt, but I've recently been noticing something...
    Let me explain further: For a start, I'm using corecenter and haven't changed versions or anything, so the software is a common factor (incorrect or not).
    However, the voltages it is reading on the VCore are definitely fluctuating more with bios 1.55B than with official 1.4.
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    I just want to stress that my system is perfectly stable and the _only_ thing that has changed was the BIOS, so please no suggestions that it could be my PSU, cos I won't buy it.
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    Does anybody know if the BIOS is actually responsible for the _regulation_ of that voltage as well, or is that purely down to hardware on the mobo?
    Could it possibly have something to do with the "new" way of selecting voltages in this BIOS? Both times, voltages have been set to "CPU default", and obviously CNQ is disabled when I make the observations.

    Depends on what was changed in Bios I suppose. Are you having a problem or was this just an observation. I see a lot of peeps that have problems and they look at that VCore fluxuation as the problem when in fact it is a normal thing. Mine fluxuates and it is perfectly stable as you can see by what I do. I fold for the Red Rockets team here on the forum and am the highest single machine user listed. My system is on 24/7 and has been rock stable for months running the folding. So VCore is not an issue with these minor fluxuations. Keep in mind that I say this simply because there are a lot of folks here that are searching for their problems and they need to know that what you and I see is normal operations. Otherwise a bunch of boards will get RMA'd for no purpose.

  • FSB/Vcore fluctuations...

    I was just wondering why the FSB and Vcore would fluctuate when I open up CPU-Z. I have it set in the BIOS to 201 and Vcore on auto, but when open CPU-Z, the FSB will go down to 200 then 201.2 then stabilize at 201...why doesn't it just remain at a constant 201???

    thats the way cpu-z is its not an instant on reading it reads it on the fly
    your vcore and speeds will NEVER EVER remain the same its the nature of the a computer, the voltage and speeds will always fluctuate.  period. anyone tells you any different, id like to see a video of their vcore and speeds staying perfect while they open and close some windows and programs.

  • WRT110 Signal Fluctuates Badly

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    If you have the latest firmware on your router, I would still suggest you to flash the firmware, reset and re-configure the router...
    Also adjust the Wireless Settings :
    Open an Internet Explorer browser page on your wired computer(desktop).In the address bar type - 192.168.1.1
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    if the above fails, In your router, try a different channel. There are 11 channels in the 2.4 GHz band. Usually channel 1, 6, or 11 works best...
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  • Temp/Fans Fluctuating Badly... Help!

    I have installed the board last Friday, installation went just fine. Yesterday I noticed Core Center poping up with tempratures varying from -123C to 95C and the RPM of the CPU fan going from "slow" to 5xxx... I assumed that something was wrong with Core Center, but Motherboard Monitor reported the same. Got in the BIOS and verified the fluctuations in the H/W Monitor -Temp screen, but after 3sec the PC hangs repeatedly (note: only in the H/W Monitor -Temp screen).
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    How are your voltages?. If they are erratic too, I'd get a bigger power supply. Most folks here run at least 28 amps on the +12 volt rail.
    Your temps swings are probably the result of voltage swings, once you get your voltages stable, the temps should even out.
    Trust your BIOS readings more than Core Center, Core Center is a bit flaky.
    There is a new version available for download if you need it.

  • Neo4-F vCore stability

    I'm wondering if there is any way to gain some more vCore stability. I set the BIOS so I should get 1.690 V core, but CPU-Z shows anywhere from 1.64 V up to 1.72 V. I think it's hindering my max OC by quite a bit. Is there a spot on my board that I should more actively cool to make the regulators more stable?

    Quote from: Pinhead-227 on 30-August-05, 07:14:26
    Temperatures are in Fahrenheit using my CPU's internal diode and MBM5. (you must mean Celsius pihead) I'm running a completely custom watercooling system with 2 heatercores and a car radiator fan coupled to a Hydor Seltz L35 pumping through a Winstch Labs Arctic Web 437W TEC unit. Case temp under load is 30C and nForce temp is 32C to 34C.
    vCore fluctuates even at stock speed (200x9=1.8 Ghz) with selected voltage. Lower voltage seems more stable.
    Right now at 2.7 GHz it is prime, memtest, gaming, and folding stable. If I go up ANY (2.71 Ghz) I lose stability. My memory is running on the 166:200 divider, and it has tested up to 255 Mhz stable with my timings. Right now memory is running at 245 Mhz.
    My 6600GT is running at 600 core, 1220 memory (stock is 500/1000).
    Hello again Pinhead,
    I kind of thought that you might have had somekind of homemade water cooling rig since I could not find references on the web from your signature.  Just a wild thought Pinhead, is there any chance that the power supplied to your jerry rigged water pump and car radiator fan may be somehow affecting the power supply to your CPU.  Can you isolate these items and insure that they or their wiring are nowhere near your CPU or motherboard? Can you possibly link/time your Vcore voltage fluctuatuions to cyling or surges of any of these items?
    Interesting to note that you have Vcore voltage fluctuations even at core speed but those are higher once you raise your voltage raised for OC. Your MBM5 calculates your voltage through an equation located in a voltage.ini file, located in its data folder, that looks something like this: sensed raw Vcore voltage input X a given coefficient + or - a correction factor = the voltage displayed by MBM5. This means that a very minor change to your sensed raw Vcore voltage is multiplied /amplified by the the coefficient in the equation. Something has to be interfering and causing a minor Raw VCore fluctuation.
    Have you tried to knock of your video OC to see if it corrects the situation?
    How are the voltages on other rail behaving?
    Can you use a voltmeter to check the power coming to your CPU?
    Do you have access to another power supply?
    Can you try your CPU in another motherboard?
    Do you get this Vcore voltage fluctuations with other software? (CPU Z, Everest< etc.)
    Pinhead keep in mind that the raw Vcore variance causing the flutuations in MBN5 is likely less than < 0.10 volt so it may not be easy to locate.  Also remember that voltage sensors & software are not always accurate. Are you sure that it is water and not moonshine in that cooling rig of yours? This could also affect your interpretation of the Vcore voltage readings.
    Siilysider 03's numbers indicate that you may be very close to max OC, see this: https://forum-en.msi.com/index.php?topic=85918.msg616278#msg616278
    Good luck,

  • Nforce vcore and spectrum

    can somebody explain clearly to me what FSB and AGP spectrum are used for?(related to motherboards only)
    does anybody's vcore fluctuate in CPU-z when it is set to a definite value in the BIOS?
    mine is set to h/w and it fluctuates(1.5xx), kinda irritating, will setting it to 1.55V make it stable.
    thanks

    On a digital signal, square wave form,
    on the high edge and low edge is when data is transmitted. (DDR)
    Data is usually a burst of energy (say 5v on high and 0.7v on low) on the low and high ends.
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    As the square wave form starts get ripples along it.
    So you use a device to spread the energy along the "spectrum" wave form.
    It uses FM technology (frequency modulation) to vary the FSB clock speeds, lower the frequency.
    So if you get a 6v peak along the signal, you stretch the wave (make the frequency slower), that reduces the height of the peak.
    I think that is how it works.
    And you would not get a 6v peak, we are talking very small.
    Spread Specturm only works for the default signals, 200FSB, 133FSB.
    If you overclock, the spreadspectrum feature tries to maintain it to the default speeds.
    Which is bad if you are running a 240Mhz FSB.  
    This also applies to the AGP one.

  • Fluctuating FSB/Multiplier

    Hi, i've recently purchased a K8N Neo4-F motherboard along with a x2 3800 toledo, and i'm having problems with the FSB and mulitplier fluctuating. I've been checking it in core center, and the core speed often drops or rises by about 200MHz as a result of the changing FSB/multiplier.
    I found a post on this forum with someone having the same problem as mine and with the same motherboard(and similar rig), and the suggestions were:
    Quote
    Set your power savings in windows to "always on" .
    Disable CnQ in Cell menu in bios .
    Click on the Cool'n'Quiet text in Corecenter and change from auto to user mode
    I've tried them all but it didn't work for me. I've noticed the problem seems to get worse when i've had the PC running for longer periods though, its fairly stable at first for awhile. The temps are fine all the time, never seen it above 40c, the vcore fluctuates by up to 0.07v, I assume thats ok but i'm not sure. I have a Hiper Type-R 580W power supply, so that shouldn't be the problem.
    Any suggestions?
     

    Well i'm kinda glad its normal, not something i'm used to. Like starting up a game to be told my system has changed all the time is a bit annoying. I did have it overclocked to 2.8GHz for awhile, which runs perfectly stable. But when the fluctuating started I got a bit concerned and put it back to stock speed... but it still does it 

  • KT3V/KT4V too low Vcore

    I'm still waiting for MSI KT3V/KT4V bios V1.9 and i'm very angry for MSI,because i wrote to MSI about it month ago. Nobody
    don't reply me and I lose my good opinion about MSI.I suggest MSI technicans to incerase Vcore voltage from default + 0,1V to
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    overclocking on the kt4/kt3 sucks anyway cause via makes their chipsets with that stupid divider.  besides, when have you ever actually seen a constant vcore anyway?  vcore fluctuates all the time.  
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  • This is really BAD

    Hi guys...I am facing a couple of problems with my mainboard... 
    First of all...There is a problem with vcore settings...at default it should be 1.4 but it's showing as 1.37. I have tested nearly every version of official BIOS but all have same vcore problem...In order to set the vcore around 1.55 I have to set the vcore at max of 1.593 (1.45+9.9%). The second big annoying problem is, I bought Asus Star ICE CPU cooler two days ago but after installation I started to get errors like the BIOS in this system is not fully ACPI compatible...and I was getting BSOD when booting into WIN XP SP2. I was using 3.1 BIOS at that time as this was the most stable BIOS for vcore and had nice memory dividers like 150MHZ etc. After that problem I had to install Win 2000 without ACPI compatibility and then flashed the BIOS to v3.A...and this version of BIOS sucks big time...it has more vcore spikes then ever and max. vcore which the mainboard is giving is 1.53 Volts which is I think a bit low for a winnie @2.6GHZ. I don't think that this is because of PSU. 12V is ultra stable at 11.92 V (default for K8N SLI Platinum).
    I think couple of users have already reported this vcore fluctuation problem earlier...What's the problem MSI engineers: can't you guys design and release a stable BIOS....
    Plz somebody help me and recommend me a real good BIOS free of all these problems esp. vcore fluctuation. Thanks in advance...
    Regards
    M.A.Z

    Quote
    Can you please tell me a little more about Voltage Regulator Issue (so in future I might check more thoroughly) before buying the mainboard.
    This particular regulator just isn't the best quality that's all. Component quality and design criteria just aren't there.  The voltage is constantly jumping around and lower then setpoint at that, as an example the DFI that competed against this board had a rock solid voltage. Now that's not to say this board is hampered because of this issue in the modding world.  I last weekend retired the board in my sig, and overclocked the board more then just about everyone I have seen and it has never let me down, despite those issues.  It took a modification to do it though, and that's mosts people issue with it, they want it out of the box and I have to agree.
    Best way is to read quality reviews.  They will discuss the power circuitry, wheather it's 3 phase 4 phase 8 phase, how good the cooling for the mosfets are etc, etc.  Reviewers miss things too, so it's good to read forums and see what users are getting on production boards before buying.  Look at the thread you linked above, that's from near the beginning of the life of this board, so you would have known back in early 2005 to find out more about that issue.  Most forums have that "Hey dude I just got my MSI 7100 check it out!! (56K warning)"  They have tons of pictures and everyone who also gets the board comments on their findings.  Those are the best threads to look at IMO.
    Quote
    Is there any moded BIOS that can let me select more than 9.9% or 1.5 on vcore etc. Because I don't want to do that volt mod 
    Alot of modded BIOS's but none to select over 9.9%(actually it goes up to 23.3% in the BIOS but those options are not available depending on CPU i.e Winnie and newer), and the 1.5V max come from CPU type as well(and you can only go to 1.55V even if you could set it).  In the pin mod I linked you you can see how the voltage was bluffed by the pin mod to 1.55V then adding 9.9% we get to 1.7V, minus the droop around 1.65V.  Pretty much all this board can do, which is probably enough for a 90nm CPU without exotic cooling.

  • Idle VCORE w/ OC

    Hi,
    I am running an MSI P55-GD65 BIOS v1.5 with an Intel Core i5 750.
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    I am not concerned about idle temps, I frequently see 27C idle with 25C ambient. I am primarily concerned about this from a power savings stand point. That small reduction in voltage on idle SHOULD reduce power consumption, if even by a small amount.
    Is this a feature that is being worked on? Will it be available in a BIOS upgrade? Is it available now in a BIOS upgrade?
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    --MrAnt--

    If everything works fine when it is set to stock settings, the Vcore fluctuation will be determined by the overclock settings to maintain the FSB and processor speed.
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  • Is my board dying??

    I've been using MSI 6337LE5 for the past 2months but now that I found out that my board is slowly dying. Few days ago, I found out that the clearCMOS jumper no longer work. And today I found out that even though I've set VCore at 1.5V, the actual VCore fluctuate around 1.66v. Its unusual bcoz when I first bought it, the VCore does not fluctuate at all and I didnt change anything to the system. The FSB which I've set at 133 also doesnt always stay at 133. One day its at 133, the other its at 131 and then the next day it went to 135. Whats up with my board?

    Doesn't sound good at all...
    It could be a bad power supply screwing up the bios, or the bios got screwed some other way.
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