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Thread: X48-DS5 stability problem; temperature related




  1. #1
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    Unhappy X48-DS5 stability problem; temperature related

    Hi,

    I've been having this really annoying problem with my new setup. The system is a GA-X48-DS5, 4 Gigs of Dominator PC8500 DDR2 (5-5-5-15, 2.1V), two videocards; one Radeon 5770 and one NVidia 9800 GT; CPU is a 6750 running at 2.66GHz; power supply is a Corsair 750W. Stock Intel cooler on the CPU, stock heatpipe on the motherboard.

    Helped by this forum, I've been investigating my problem and found that with a blower (oversized for test purpose), I am able to stabilize my system. Without it, whenever the northbridge reaches about 40 degrees celcius, the system randomly crashes (even in the BIOS setup screen). Since it is an oversized blower, it does cool down all components but I've correlated these crashes with the system temperature reading (which basically doesn't mean much hey?).

    Also, it would seem like temperature of he northbridge can be significantly higher and stay stable with the FSB down from 333MHz to 200MHz; leaving my system underclocked (right now, it is at 43 degrees).

    I didn't have other fans than the ones on the heatsinks and power supply. I added fans, one in the front and one in the back (unfortunatelly, they are very silent hence not very performant) but still; 40 degrees celcius.... common, this chip can take much more than that. Timings shouldn't be affected this much no? Shall I play with the Clocks Skew?

    Might I say that the northbridge is not very well placed as it is enclosed in a small space between the CPU, the RAM (very tall memory modules) and one of the videocards. It is hard to bring proper ventilation unless equipped with a case with a good side fan. (I'm so desperate that I'm thinking about getting a new case; a good 200 or 300 mm fan or even a 400 would be nice but let's try to understand the problem first).

    I need the help of this forum again to help me understand what is going on. I left my system's bios at the default values and verified the different voltages and DDR2 timings and everything looks fine. I did however in my previous tests toy with the MCH overvoltage but with no success. Increasing it beyond +0.175V leaves the system more and more unstable (probably because of the faster increasing heat of the MCH).

    Thanks,

    tcn

  2. #2
    profJim's Avatar
    profJim is online now Chief Munchkin + moderator
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    Default Re: X48-DS5 stability problem; temperature related

    The "system" temperature sensor is usually located in the general area of the north bridge (MCH) chip.
    Your stock Intel heatsink cooler isn't helping by blowing some heat directly onto your NB.
    An aftermarket cpu cooler usually exhausts the heat directly toward the rear case fan.
    Is your rear case fan exhausting air out the back of your case?

    It's possible that you NB heatsink is not properly seated and can't provide optimal cooling. You will need to clean and replace the NB thermal compound if you reinstall the NB heatsink.

    I'm puzzled by your mixing Radeon and Nvidia video cards, unless you're using more than two monitors. Hopefully having two different sets of video drivers isn't compounding the problem in some way. Are your GPU temperatures reasonable?
    You might want to try a single video card test where the single video card is installed in the video card slot farthest away from the NB and see if this helps with stability.

    What brand/model is your computer case? How many fans can you install in your computer case?
    If you want to underclock your system to lower heat output, you'll get better system performance if your cpu runs at 333MHz, but you lower the cpu multiplier.

    It sounds like you're trying to do too much with too little cooling capacity.
    Airflow through your case is crucial for proper system cooling.
    You can always install fans with higher cooling capacity and hook the fans up to a manual fan controller so that your can cut down on fan noise as needed.
    Last edited by profJim; 03-01-2010 at 06:04 AM. Reason: spelling
    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
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  3. #3
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    Default Re: X48-DS5 stability problem; temperature related

    Thanks for the swift reply!

    An aftermarket cpu cooler usually exhausts the heat directly toward the rear case fan.
    Is your rear case fan exhausting air out the back of your case?
    I see where you stand but there are a lot of aftermarket heatsink that will blow air directly to the motherboard like the NH-C12P I just bought but must return (this one is just incompatible with my system). I thought if I could have better airflow onto the motherboard....

    And yes, I have an exhaust fan in the back. Extremely silent (800 RPMs) so effective up to a point.


    I'm puzzled by your mixing Radeon and Nvidia video cards, unless you're using more than two monitors.
    Nah; I've been used to PhysX; I just don't want to loose it. NVidia doesn't want us to but.... we do .

    And you touched a point where a single video card gets my system stable; but the Northbridge temperature stays low (35 degrees or so). I am running prime95 as I type with single video card; CPU is 44 degrees, Northbridge is 34.

    What brand/model is your computer case? How many fans can you install in your computer case?
    It's an Alphaware old model looks like this: Model; but the side panel is different as mine has small holes instead. It's equipped with the CPU sleeve.

    If you want to underclock your system to lower heat output, you'll get better system performance if your cpu runs at 333MHz, but you lower the cpu multiplier.
    The problem isn't the CPU.... and no, I'm just looking after system stability. Once I get stable, I'll see if I can get a bit more out of the memory (that's the purpose of having Dominator RAM isn't it?


    I tried installing a small 40mm fan on the northbridge with no success. This only helped pushing warm air on the CPU getting this one warmer. I am puzzled; I've been talking to Gigabyte's tech. support about northbridge temperature and they told me it can handle 95 degrees and that 40 to 50 degrees is very acceptable. But as you said, is the sensor well placed on the chip.... I might take the heatpipe off, clean it and apply some Arctic cooling MX-2 (I got plenty of it).

    So you would recommend to change the case and get something more like Newegg.ca - COOLER MASTER Storm Scout SGC-2000-KKN1-GP Black Steel &#47; Plastic ATX Mid Tower Computer Case - Computer Cases or this Newegg.ca - COOLER MASTER HAF 922 RC-922M-KKN1-GP Black Steel &#43; Plastic and Mesh Bezel ATX Mid Tower Computer Case - Computer Cases or even this Newegg.ca - Rosewill CRUISER Black Gaming ATX Mid Tower Computer Case with Side Panel Window, comes with Four Fans-1x Front Blue LED 120mm Fan, 1x Top Blue LED 120mm Fan, 1x Rear 120mm Fan, 1x Side Blue LED 190mm Fan - Computer Cases?

    Thanks,

    tcn

  4. #4
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    Cool Re: X48-DS5 stability problem; temperature related

    Small update...

    I decided to change the case; got a Cooler Master 932 for a bargain price. I also changed the thermal stickers under the northbridge and southbridge for a cooler paster (high quality they say).

    Examination of the sticker shows overheat as it started to darken in some areas and didn't stay completely flat on the chip when the heatpipe was removed.

    As I write this email, I am running prime95 in full system speed (overclocked memory as well; cpu multiplier down from 8 to 6; FSB up from 333 to 389) and I will leave it running for a while.

    Let's see if it crashes.....


    tcn

  5. #5
    Chike is offline Senior Member
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    Default Re: X48-DS5 stability problem; temperature related

    Does the NB HS/heatpipe feel hotter to touch?

  6. #6
    profJim's Avatar
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    Default Re: X48-DS5 stability problem; temperature related

    What brand of thermal paste did you use?
    Some brands require quite a few heat cycles (power on, power off) before the paste fully cures and provides maximum heat transfer.

    You should be happy with your new HAF 932 case, good choice. As I recall, your case comes with 3 large (200+mm) fans so your airflow should be excellent.

    CoolerMaster makes decent cases that sell for reasonable prices, even better when Newegg has them on sale, often with a rebate and/or free shipping.

    My CM RC-690 case is excellent. I'm using seven case fans, 4 x 140mm 1000 rpm and 3 x 120mm 1600 rpm Scythe S-Flex fans. Fan controllers let me manually control fan speed and noise.

    Sounds like you're good to go, let us know how things work out.

    **edit** I'm a fan (pun intended) of down draft cpu coolers. My GeminII cooler uses two 120mm fans and works well.
    The Noctua NH-C12P is a top notch heat-sink/fan combination.
    The best down draft coolers offer top tier performance, but generally don't cool quite as well as other premium tower coolers.
    Last edited by profJim; 03-01-2010 at 06:11 AM.
    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
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    Default Re: X48-DS5 stability problem; temperature related

    Well, prime95 didn't kill my computer and temperatures are well within acceptable range.

    Does the NB HS/heatpipe feel hotter to touch?
    This case is amazing. Three 230mm fans are blowing air in and out. The northbridge stays a bit warm but it's not hot. Probably a combination of case and thermal compound. I'll see how it goes with the dust; there are no filters.... I might try to find something to prevent hair (dog hair....) to get into the fans (a screen should be ok)...

    What brand of thermal paste did you use?
    I bought a huge amount of Arctic Silver MX-2 not too long ago to build my mini-itx server. That's what I used; it does a fine job.

    This solution is and from far, better than my AC blower!

    tcn

  8. #8
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    Default Re: X48-DS5 stability problem; temperature related

    Just wanted to drop a line to tell you guys that my system is finally stable. I'm running my CPU slightly overclocked from 2.66 to 2.8GHz to get my FSB up to 400MHz (standard rated for the CM2X 8500C5D memory). I might try something a bit higher when I get the chance just for the kick of it.

    I'm just pissed that I got a Noctua NC-C12P SE14 and can't use it nor return it ("Return refused:This product can only be exchanged or replaced with the exact same item."). The Dominator DDR2 memory is way too tall to fit under the heatsink. I love the memory and; unfortunatelly fell in love with the heatsink (yeah, material guy ain't I ).

    And I found myself some filters.... Amazing what fabric softner sheets can do!

    Anyhow, thank's for your help and suggestions, it was really just a matter of temperature.

    tcn
    Last edited by tcn; 03-03-2010 at 09:10 AM. Reason: Forgot about the filters

  9. #9
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    Default Re: X48-DS5 stability problem; temperature related

    a cheap n easy fan filter is a pair of womens tights or stockings cut the end off and stretch across the fan and slip an elastic band around the fan to hold it in place,also id remove both your gpu heatsinks and wipe the cheap stuff ati n nvidia put on n apply some mx-2 paste to those aswell
    Gigabyte ex58-ud5 f12 bios
    Intel i7 920 d0 @3.8ghz 24/7-normal cpu voltage 1.18750v/c1e/turbo/multi threading enabled
    Ocz reaper DDR3 PC3-14400 (1800MHz) 3x2gb (OCZ3RPR1800LV6GK) 8-8-8-24-1t-@1.64v-1.3qpi
    Thermolab Baram cpu cooler
    Dual Boot
    1xsamsung 750gb hard drive-win7 ultimate 64
    1xsamsung 750gb hard drive-windows xp pro 32
    Ati x1950 pro gpu
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    1050w psu
    Nzxt lexa case
    http://i40.tinypic.com/2z3w377.jpg <=3.8ghz overclock template

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