kougarHow 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.
HeavyHemiGenerally speaking, the clock 'locking' at ~530mhz is due to a hardware tripping on the GPU as a protection mechanism.
kougarHeavyHemiGenerally 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.
Rigbuilder12Correct, 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.
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.