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Overclock Failing After Move From Bench To Case With Cooler Temps?

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geninfo
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2018/02/13 20:44:21 (permalink)
Please help, wise EVGA overclockers:
 
Moved build from bench stand to open Fractal Design R6 case (no sides on temporarily).
Failing previous passed Prime95 56K test, but with lower CPU temperature and package power.
Same components.
Same BIOS settings.
Full build info here.
Fail is sudden restart - no BSOD; no error codes.
BIOS default settings do not fail 56K test in case.
 
Same wiring aside from:
Case fan header + 3 fans (SATA power cable from PSU).
Case fan header connected to chassis fan pins on mobo.
AIO CLC pump previously connected to chassis fan pins on mobo now connected to case fan header.
No difference in pump speeds; lower liquid temperature.
 
Have full HWiNFO64 data for all runs.

1280K test passes, but CPU package power pattern differs.
 
Bench Prime Test 1280 (pass)
 

 
Open Case Prime Test 1280 (pass)
 


56K test passes in bench; not in case.
 
Bench Case Prime Test 56 (pass)
 

 
Same Bench Case Prime Test 56, First 6 Minutes (pass)
 

 
Open Case Prime Test 56 (fail in 6 minutes)
 
 
post edited by geninfo - 2018/02/13 20:49:58

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#1

11 Replies Related Threads

    wmmills
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    Re: Overclock Failing After Move From Bench To Case With Cooler Temps? 2018/02/13 21:03:50 (permalink)
    Is there any info in Event V? It may not be listed as a failure it may be listed as a error or warning, but def pay attention to the last hour or 24 hours tab. Best place to start. Usually a reset like that is because of too much/too little vcore voltage but it could be a whole list of things.

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    #2
    geninfo
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    Re: Overclock Failing After Move From Bench To Case With Cooler Temps? 2018/02/13 21:11:20 (permalink)
    No useful info in Event Viewer.  I watch Event Viewer logs for application errors and general criticals, warnings, and errors.
     
    Also interesting:
    All benchmarks (Time Spy, Fire Strike, Cinebench, RealBench, Furmark, AIDA64 Cach & Memory + GPGPU) still pass.
    Possible slightly worse performance (within 1%). 
    #3
    GGTV-Jon
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    Re: Overclock Failing After Move From Bench To Case With Cooler Temps? 2018/02/13 22:28:02 (permalink)
    Some weird grounding with the chassis affecting the power usages compared to the open Dark bench plate?
    #4
    Hoggle
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    Re: Overclock Failing After Move From Bench To Case With Cooler Temps? 2018/02/14 00:07:49 (permalink)
    GGTV-Jon
    Some weird grounding with the chassis affecting the power usages compared to the open Dark bench plate?




    That is kind of what I was wondering myself if something was touching the motherboard to the case besides the mounting screws it could cause problems with crashing. Thing is it would probably crash even at default speeds though if this was the case.

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    geninfo
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    Re: Overclock Failing After Move From Bench To Case With Cooler Temps? 2018/02/14 11:05:46 (permalink)
    Hoggle
    GGTV-Jon
    Some weird grounding with the chassis affecting the power usages compared to the open Dark bench plate?


    That is kind of what I was wondering myself if something was touching the motherboard to the case besides the mounting screws it could cause problems with crashing. Thing is it would probably crash even at default speeds though if this was the case.



    Thanks for tips about shorting!
     
    Found flexing of motherboard near power swtches and I/O shield.
    Observed VRM heat sink touching case; no other non-standoff points of contact.
    Loosened all motherboard screws.
    This relieved flexing of motherboard near power switches and I/O shield..
    VRM heat sink no longer touching case.
    Still crashed after 16 minutes (versus 6-10).
     
    Reseated DIMM reseated during case install to sneak cable past.
    Still crashed after 16 minutes.
     
    Ran Memtest86 overnight.
    Successfully passed ~3.5 passes before manually stopped.
     
    System left to rest powered on for three hours.
    Reran 56K test again - passed (manually cancelled after 33 minutes).
    Observed core 2 usage collapse during test (see below).
     
    Let rest 10-15 minutes powered on (no restart).
    Reran 56K test again - crashed within 1-2 minutes.
     
    Was previous result on bench fluke?
    Did undoing motherboard flex really help?
     
    Also, noticed problem with CPU core 2:
    Core 2 always one of hottest (hottest?) cores.
    Core 2 usage sometimes falls from constant 100% to variable 24-82% during test.
    Core 2 Thread #1 usually, but not always less than Thread #0 (example: 72% #0, 24% #1)
    All other cores stay 100% both threads.
     
    In graph below, Core 2 usage change correlates with sudden decrease in CPU Package Power near end.
    Prior to spike, Core 2 100% usage.
    After spike to end of test (crash), Core 2 variable usage.
     
    Package Power Drop Correlated With Core 2 Usage Collapse
     

     
    Also observed during successful 56K 33 minute test above, but did not cause crash.
     
    HWiNFO Core 2 Usage Drop During 56K 33 Minute Success Test
     

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    Sajin
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    Re: Overclock Failing After Move From Bench To Case With Cooler Temps? 2018/02/14 12:12:53 (permalink)
    Move everything back to the bench and see what happens. If it fails your overclock simply wasn't stable to begin with.

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    wmmills
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    Re: Overclock Failing After Move From Bench To Case With Cooler Temps? 2018/02/14 22:15:48 (permalink)
    geninfo
    Hoggle
    GGTV-Jon
    Some weird grounding with the chassis affecting the power usages compared to the open Dark bench plate?


    That is kind of what I was wondering myself if something was touching the motherboard to the case besides the mounting screws it could cause problems with crashing. Thing is it would probably crash even at default speeds though if this was the case.



    Thanks for tips about shorting!
     
    Found flexing of motherboard near power swtches and I/O shield.
    Observed VRM heat sink touching case; no other non-standoff points of contact.
    Loosened all motherboard screws.
    This relieved flexing of motherboard near power switches and I/O shield..
    VRM heat sink no longer touching case.
    Still crashed after 16 minutes (versus 6-10).
     
    Reseated DIMM reseated during case install to sneak cable past.
    Still crashed after 16 minutes.
     
    Ran Memtest86 overnight.
    Successfully passed ~3.5 passes before manually stopped.
     
    System left to rest powered on for three hours.
    Reran 56K test again - passed (manually cancelled after 33 minutes).
    Observed core 2 usage collapse during test (see below).
     
    Let rest 10-15 minutes powered on (no restart).
    Reran 56K test again - crashed within 1-2 minutes.
     
    Was previous result on bench fluke?
    Did undoing motherboard flex really help?
     
    Also, noticed problem with CPU core 2:
    Core 2 always one of hottest (hottest?) cores.
    Core 2 usage sometimes falls from constant 100% to variable 24-82% during test.
    Core 2 Thread #1 usually, but not always less than Thread #0 (example: 72% #0, 24% #1)
    All other cores stay 100% both threads.
     
    In graph below, Core 2 usage change correlates with sudden decrease in CPU Package Power near end.
    Prior to spike, Core 2 100% usage.
    After spike to end of test (crash), Core 2 variable usage.
     
    Package Power Drop Correlated With Core 2 Usage Collapse
     

     
    Also observed during successful 56K 33 minute test above, but did not cause crash.
     
    HWiNFO Core 2 Usage Drop During 56K 33 Minute Success Test
     



    Might just be your cpu cooler mount. Either the TIM isn't quite right or the cooler is cranked on too much maybe on one corner or maybe even both. Remount with pea method, squish and twist cooler slightly while pushing down and then screw down in X pattern. Try test again.

    MOBO: EVGA P67 FTW, CPU: I5 2500K, RAM: Gskill PI 1600 CAS 6, SSD: Samsung 830 128gb, HDD: WD Caviar Black 750gb, PSU: CoolerMaster V-1000, CPU HSF: EVGA ScC HSF~ P/P 88CFM Yate Loons, G-CARD:EVGA GTX780 w/ EVGA 980ti Hybrid AIO Cooler, CASE: LIAN-LI PC-V2010B w/ Window mod, OS: Windows 7 Ultimate 64bit, MON: AOC i2367F, HdSet: steelseries Siberia 
     


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    geninfo
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    Re: Overclock Failing After Move From Bench To Case With Cooler Temps? 2018/02/15 07:38:22 (permalink)
    wmmills
     
    Might just be your cpu cooler mount. Either the TIM isn't quite right or the cooler is cranked on too much maybe on one corner or maybe even both. Remount with pea method, squish and twist cooler slightly while pushing down and then screw down in X pattern. Try test again.



     
    Because of insufficient cooling of the core, uneven pressure on the die, or pressure on the socket pins?
     
    Core 2 and some other cores always run hotter than others even with different thermal interface applications.
    Core 2 does not thermal throttle or get close to TjMax when its HWiNFO-reported usage collapses under load as above.
     
    #9
    wmmills
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    Re: Overclock Failing After Move From Bench To Case With Cooler Temps? 2018/02/15 19:42:50 (permalink)
    geninfo
    wmmills
     
    Might just be your cpu cooler mount. Either the TIM isn't quite right or the cooler is cranked on too much maybe on one corner or maybe even both. Remount with pea method, squish and twist cooler slightly while pushing down and then screw down in X pattern. Try test again.



     
    Because of insufficient cooling of the core, uneven pressure on the die, or pressure on the socket pins?
     
    Core 2 and some other cores always run hotter than others even with different thermal interface applications.
    Core 2 does not thermal throttle or get close to TjMax when its HWiNFO-reported usage collapses under load as above.
     


    Maybe all 3?!? The flexing of the mobo really shouldn't be a issue cause the whole setup sits still while your using it, but when you moved it, say from bench to case, maybe things could move and change. Did you try what Saj said and go back to bench? Other than running default settings where you should be inputting a dialed in manual vcore/timings/command rate/no xmp etc... before you bench anything, seems power delivery/allocation may play a part judging by sudden restart with no errors logged, but that could be because of running default settings in stress benches also.

    MOBO: EVGA P67 FTW, CPU: I5 2500K, RAM: Gskill PI 1600 CAS 6, SSD: Samsung 830 128gb, HDD: WD Caviar Black 750gb, PSU: CoolerMaster V-1000, CPU HSF: EVGA ScC HSF~ P/P 88CFM Yate Loons, G-CARD:EVGA GTX780 w/ EVGA 980ti Hybrid AIO Cooler, CASE: LIAN-LI PC-V2010B w/ Window mod, OS: Windows 7 Ultimate 64bit, MON: AOC i2367F, HdSet: steelseries Siberia 
     


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    geninfo
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    Re: Overclock Failing After Move From Bench To Case With Cooler Temps? 2018/02/15 20:16:52 (permalink)
    Sajin
    Move everything back to the bench and see what happens. If it fails your overclock simply wasn't stable to begin with.



    wmmills
    Maybe all 3?!? The flexing of the mobo really shouldn't be a issue cause the whole setup sits still while your using it, but when you moved it, say from bench to case, maybe things could move and change. Did you try what Saj said and go back to bench? Other than running default settings where you should be inputting a dialed in manual vcore/timings/command rate/no xmp etc... before you bench anything, seems power delivery/allocation may play a part judging by sudden restart with no errors logged, but that could be because of running default settings in stress benches also.

     
    Because of what Sajin said, I reviewed all test data. Could not statistically prove overclock was stable to begin with.
     
    Feel like it did perform worse in case, but improved slightly after relieving the flex on the motherboard and re-seating the DIMM.
    Not enough tests for confidence.
     
    Had tightened waterblock slightly after move into case to compensate for moving around.
    May untighten to see if uneven pressure possible.
     
    Agree on power delivery.  Most systems fail because of fuel, not internals.
    PSU ran on bench with fan up, now in case fan down.                 
     
    Moved to a previous overclock with more statistical stability support.
    Aside from one hitch, which could be random, solid in case.
     
    How do you determine values to use when dialing in manual settings?  Do you take initial reported reported auto values, manually set them, and change from there?
     
    #11
    wmmills
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    Re: Overclock Failing After Move From Bench To Case With Cooler Temps? 2018/02/16 19:25:46 (permalink)
    For the cpu vcore seeing what the auto starts you with and working incrementally from there is fine, unless you can dig up Intels spec sheets and go through them. The ram you use the base values set on the sticker on the side of one of the sticks, but you may want to set a command rate of 2 to start with for better stability. If your using a lot of ram, like all slots filled with high counts then you may have to raise the rams base voltage a tick to compensate. Just watch all your temps and move slowly lest you end up with a smoking pile of rubble.

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