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Locking Boost Frequency?

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kougar
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2014/10/11 09:14:09 (permalink)
How does one lock the frequency (or lock the boost frequency) of 700 generation GPUs? EVGA's K-boost option is broken, it actually causes my GPU to run at half-speed (~530Mhz) overnight when running Folding@home which drops PPD by 2/3rds of what it should be. The 530Mhz setting is then "stuck" and won't even change when a game or EVGA's OC Scanner is run.
 
I already set "Prefer Maximum Performance" in the NVIDIA driver settings, but even then EVGA's Precision claims the GPU is running ~200Mhz below it's set boost level. This is probably also lowering Folding performance. Or am I reading it wrong and Precision never shows the current boost frequency, just the base?
 
There's another problem... because of this boost nonsense I am having trouble verifying if OC's are stable. When I run  EVGA's OC Checker the GPU underclocks itself for any furmark based test, but most of the other tests that include artifact scanning will not ramp the GPU up to its boost frequency. Settings that pass EVGA's underclocked furmark test will error if the GPU ever decides to ramp to its full boost frequency. It really defeats the original purpose of the test...
 
Relatively new owner of a Titan Black, my previous GPU being a GTX 480 which didn't have any boost complexity to deal with. It's a Titan Black Hydro and load temps never exceed 63c so that's not the problem.


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    HeavyHemi
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    Re: Locking Boost Frequency? 2014/10/11 10:23:39 (permalink)
    kougar
    How does one lock the frequency (or lock the boost frequency) of 700 generation GPUs? EVGA's K-boost option is broken, it actually causes my GPU to run at half-speed (~530Mhz) overnight when running Folding@home which drops PPD by 2/3rds of what it should be. The 530Mhz setting is then "stuck" and won't even change when a game or EVGA's OC Scanner is run.
     
    I already set "Prefer Maximum Performance" in the NVIDIA driver settings, but even then EVGA's Precision claims the GPU is running ~200Mhz below it's set boost level. This is probably also lowering Folding performance. Or am I reading it wrong and Precision never shows the current boost frequency, just the base?
     
    There's another problem... because of this boost nonsense I am having trouble verifying if OC's are stable. When I run  EVGA's OC Checker the GPU underclocks itself for any furmark based test, but most of the other tests that include artifact scanning will not ramp the GPU up to its boost frequency. Settings that pass EVGA's underclocked furmark test will error if the GPU ever decides to ramp to its full boost frequency. It really defeats the original purpose of the test...
     
    Relatively new owner of a Titan Black, my previous GPU being a GTX 480 which didn't have any boost complexity to deal with. It's a Titan Black Hydro and load temps never exceed 63c so that's not the problem.


    Personally, I just use Afterburner until EVGA gets Precision sorted.  I just set a core offset of +52mhz and folding runs reliably at 1097mhz. (of course your frequency will be different depending upon what your boost is under stock settings) EVGA, Furmark, and some other GPU 'load tests', are flagged in the driver to limit power draw. Unigine benches are pretty decent at giving you a good indication of reliable boost clocks. Generally speaking, the clock 'locking' at ~530mhz is due to a hardware tripping on the GPU as a protection mechanism.
     
    Edit: Well, whoops! I've not been folding for a couple of months. So I downloaded the new client and TITAN 1 and 2 run at 1071 and 1097mhz...and around 80-85% load... My GTX650TI SC is running at full clock speed. Let me research this......
    Whoops number 2...had to re-enable custom fan profile. All three GPU's are now running at full boost.
    post edited by HeavyHemi - 2014/10/11 10:48:15

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    kougar
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    Re: Locking Boost Frequency? 2014/10/11 12:08:34 (permalink)
    HeavyHemiGenerally speaking, the clock 'locking' at ~530mhz is due to a hardware tripping on the GPU as a protection mechanism.



    Really?? Protection from what? I don't modify voltages, and the most brutal system loads max the GPU out at 63c with the side panel off. In the past I'd very rarely notice my old GTX 480 had locked itself to something around 450Mhz on my old desktop, thought it was a driver glitch but maybe it was the same Precision issue because it would require a restart to clear.
     
    I know that Furmark is limited to keep the power draw in check, but it underclocks the chip so far that it becomes useless for stability checking. Why not just limit framrates to keep the power consumption down, as 100+FPS in Furmark isn't required to stability check a GPU.
     
    None of the OC Scanner tests capable of artifact scanning ramped the GPU to its boost clock if I was reading Precision correctly. So either I'm just being stupid (entirely possible) and not reading Precision correctly, Precision is displaying wrong info, or the card isn't ramping as it should according to my understanding of the boost process. Guess I will try Afterburner to get some more data.


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    HeavyHemi
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    Re: Locking Boost Frequency? 2014/10/11 12:56:53 (permalink)
    kougar
    HeavyHemiGenerally speaking, the clock 'locking' at ~530mhz is due to a hardware tripping on the GPU as a protection mechanism.



    Really?? Protection from what? I don't modify voltages, and the most brutal system loads max the GPU out at 63c with the side panel off. In the past I'd very rarely notice my old GTX 480 had locked itself to something around 450Mhz on my old desktop, thought it was a driver glitch but maybe it was the same Precision issue because it would require a restart to clear.
     
    I know that Furmark is limited to keep the power draw in check, but it underclocks the chip so far that it becomes useless for stability checking. Why not just limit framrates to keep the power consumption down, as 100+FPS in Furmark isn't required to stability check a GPU.
     
    None of the OC Scanner tests capable of artifact scanning ramped the GPU to its boost clock if I was reading Precision correctly. So either I'm just being stupid (entirely possible) and not reading Precision correctly, Precision is displaying wrong info, or the card isn't ramping as it should according to my understanding of the boost process. Guess I will try Afterburner to get some more data.


    Simply put, as long as you're under 79-80C and your power draw is under the stock limit (106%) you should be getting full boost as long as the application/game needs the power. Folding should load your GPU's to the point they should run at full boost clocks. Are you also running clients on the CPU at the same time?

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    kougar
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    Re: Locking Boost Frequency? 2014/10/12 10:17:04 (permalink)
    Did some tests with GPU-Z running to verify load/boost/power figures and was able to figure out the culprit. Precision is somehow mucking up the frequency/boost settings. If I uninstall Precision the GPU will boost properly as I was expecting. It will maintain that boost overnight with F@H running. I installed MSI Afterburner and re-added my 100Mhz OC and the card is running fine at 1300Mhz under sustained loads now.
     
    Yes I run the CPU client. My experience has been 4 threads allows plenty of room for the GPU folding, FAH Control doesn't change the PPD figures on the Titan regardless of if I run CPU folding or not as long as I keep it at 4 threads.
     
    It sucks Precision was the cause. Now that I'm no longer using it the Titan's PDD has jumped from ~160,000 to 235,000 according to FAH Control. 


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    DoomGiver32
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    Re: Locking Boost Frequency? 2014/10/13 15:17:43 (permalink)
    Just want to interject here to verify what I've been finding.
     
    When you're overclocking with Precision X, your clock speeds aren't reaching their full "overclock" that you defined? That's what I've been experiencing in the various benchmarks. Personally I don't use  but I've been using the various tests supplied by EVGAs OCScanner. It seems I can't get a clock speed higher then 1110Mhz when using the fur benchmarks, and even 3DMark doesn't go over that limit. Some of the other misc. benchmarks in OCScanner at least get within ~15Mhz of my overclock value.
    Does this sound similar to your situation? If so I'll try using MSI-AB instead when I get home and uninstall Precision X.
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    Rigbuilder12
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    Re: Locking Boost Frequency? 2014/10/14 07:50:07 (permalink)
    Yea don't use the new PrecisionX. Its terrible and most of the functionality is broken. Use the 4.2.1 legacy version of PrecisonX with RivaTuner 6.2 for 64 bit OSD support. Everything works fine on older PrecisionX 4.2.1, k-boost,over-volt, overclocking OSD etc.
    3Dmark doesn't show accurate clocks fyi, since the 340 driver family, its been way off in benchmark tools and burns.
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    DoomGiver32
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    Re: Locking Boost Frequency? 2014/10/14 07:51:38 (permalink)
    Yeah I thought I remembered it being way better when I OCed the first time ages ago. Tried OCing again, broken ass program made me run in circles for 3 hours.
     
    5 mins with MSI Afterburner and my OC is ready. ;P
    I'll try to find 4.2.1, as I don't think I can change voltages with MSI-AB.
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    Rigbuilder12
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    Re: Locking Boost Frequency? 2014/10/14 07:53:13 (permalink)
    Correct, it has been verified(by Unwinder himself)that AB does not apply over volting settings, nor does it have a k-boost function to lock clocks core/memory. AB is more of a AMD tuner, as it doesn't support much of Nvidia overclocking features/settings. K-boost is huge, I couldn't live without it.
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    HeavyHemi
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    Re: Locking Boost Frequency? 2014/10/14 09:49:14 (permalink)
    Rigbuilder12
    Correct, it has been verified(by Unwinder himself)that AB does not apply over volting settings, nor does it have a k-boost function to lock clocks core/memory. AB is more of a AMD tuner, as it doesn't support much of Nvidia overclocking features/settings. K-boost is huge, I couldn't live without it.


    Afterburner, does apply voltage settings for Nvidia GPUs. As far as I know, the only feature AB doesn't support is K-Boost. MSI (which pays the developer for Afterburner) also, sells Nvidia GPU's so I don't know where you got the idea Afterburner is an 'AMD tuner'.

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    kougar
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    Re: Locking Boost Frequency? 2014/10/14 12:35:49 (permalink)
    What good is KBoost if it doesn't actually do anything? Testing with it enabled / disabled didn't force the card to run at its out-of-the-box boost frequency.  Going into the NVIDIA driver settings and setting "prefer maximum performance" did the exact same thing Kboost did, meaning the GPU stayed at stock frequency instead of powering down when idle but that was it. 
     
    Regarding the OC Scanner tests, none of them were detecting artifacts at a known unstable overclock precisely because the card was not running at the full boost frequency. But if I ran F@H it would boost to a higher frequency and go unstable. It really makes testing OC stability way more complicated than it has to be.


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    Sajin
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    Re: Locking Boost Frequency? 2014/10/14 12:51:51 (permalink)
    The solution: Run a vBIOS that has boost disabled. Link to vBIOS that has boost disabled. 

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    Fennicillin
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    Re: Locking Boost Frequency? 2014/10/19 14:53:25 (permalink)
    Well, this has been happening to me too. I switched to Afterburner and after about 10 minutes in game I'm still getting downclocked to half speed. I'm barely over 60C, there's no reason I should be getting throttled. It locks to 549MHz and stays there until I restart.
    post edited by Fennicillin - 2014/10/19 14:58:28

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    kougar
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    Re: Locking Boost Frequency? 2014/10/19 15:41:01 (permalink)
    FennicillinWell, this has been happening to me too. I switched to Afterburner and after about 10 minutes in game I'm still getting downclocked to half speed. I'm barely over 60C, there's no reason I should be getting throttled. It locks to 549MHz and stays there until I restart.



    I could spout random guesses but I'd suggest asking the EVGA tech's directly. If it was some kind of self-protection measure they should know how it works and what the various triggers for it are. It's funny I don't remember reading about it in any reviews or core uArch discussion though. 


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