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GTX 600 Series Unlocked Voltage Bios' downloads and tools. - Page 729

post #7281 of 7931
Quote:
Originally Posted by evilkitty View Post


seems i was not getting 1333, i was reading the clock speed from heaven 4.0, it seems to read the speed wrong, it was really 1254Mhz according to GPU-Z

is there a way to OC farther than you can when increasing the power % does not help get higher clocks

without more power there's no more room to oc. all thats left is hardmodding.

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throttlemeister
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post #7282 of 7931
Quote:
Originally Posted by djthrottleboi View Post

without more power there's no more room to oc. all thats left is hardmodding.
i currently have it 105%, if i increase it to 110% i still don't get better stable clocks
post #7283 of 7931
Quote:
Originally Posted by evilkitty View Post

i currently have it 105%, if i increase it to 110% i still don't get better stable clocks

The power limit is just a limitation, if the card tries to draw more power than the limit allows, it will throttle. If you aren't hitting the power limit, raising it does nothing, the card needs more voltage to push more power through the gpu.
    
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post #7284 of 7931
Hey DJ, mind tweaking mine one more time?

I have to have the power limit maxed at 249 for it to run stable. Not sure if thats good or bad but it kinda worries me.

Appreciate it if you could.

newbiosmod.zip 56k .zip file
post #7285 of 7931
Quote:
Originally Posted by evilkitty View Post

seems i was not getting 1333, i was reading the clock speed from heaven 4.0, it seems to read the speed wrong, it was really 1254Mhz according to GPU-Z

is there a way to OC farther than you can when increasing the power % does not help get higher clocks

First be sure that you need more speed. So use Afterburner or gpu-z hardware monitor/sensors and look if your card is maintaining certain speed nicely or is it unstable during heaven/gaming, if it's unstable then you have other problems to sort out first... In my case original total power limit was never limiting factor, because i ran into other problems long before that.
post #7286 of 7931
Quote:
Originally Posted by FtW 420 View Post

The power limit is just a limitation, if the card tries to draw more power than the limit allows, it will throttle. If you aren't hitting the power limit, raising it does nothing, the card needs more voltage to push more power through the gpu.
i thought that was the voltage...
i guess i need to mess with the voltage table then?
this is my current stable OC under linux, windows could get another 39MHz by only adjusting the clock speed
which values do i adjust?
Screencast2014-03-04155604.mp4.zip 1616k .zip file
i would like to get another 39mhz on linux, base clock of 1110Mhz
temps are very safe, 62-63C and that is when mining
Edited by evilkitty - 3/4/14 at 1:39pm
post #7287 of 7931
Quote:
Originally Posted by evilkitty View Post

i thought that was the voltage...
i guess i need to mess with the voltage table then?
this is my current stable OC under linux, windows could get another 39MHz by only adjusting the clock speed
which values do i adjust?
Screencast2014-03-04155604.mp4.zip 1616k .zip file
i would like to get another 39mhz on linux, base clock of 1110Mhz
temps are very safe, 62-63C and that is when mining

I'm not really sure, I don't bios mod for voltage, if I don't get unlocked cards I use the soldering iron & hardmod.
    
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post #7288 of 7931
But never forget that there are more power limits than just the total power limit. At least 3 more on 670, 680, 760, 770 etc and 2 on smaller ones (for me it makes pci-e, 6-pin, 8pin limit). I had major headache with my card being power limited while i was getting nowhere near my total power limit. I was hitting PCI-E power limit. Depends how card is made etc...

My story and conclusion here: Warning: Spoiler! (Click to show)
So i soldered 3 multimeters to power sensors and while i was already guessing it right, i confirmed that my card was throttling because it was hitting only one of them, that being pci-e power limit which is usually set at 66W. Basically all important stuff gets it's power from there (card, memory, fan, and some of gpu power) and because i have 4G memory it draws even more from there, so with even original bios i get to that 66W limit kicking in, and is it only my cards design flaw (for overclocking) or not, if it's getting to that one limit it lowers all power crossing 6 gpu pwm-s (1 for pci-e, 2 for 6-pin and 3 for 8-pin power lines) not only first one that actually draws power from there... Stupid load balancing @ work. So it magnified the effect to the point where even setting higher fan speed would mean automatic downclock, or raising memory speed did the same. Setting that power to 60W was like choking my card especially when turning up fan and memory. Never nearing max total power.

So basically near limits setting 1W higher pci-e power meant that card could draw at least 1+5W more than before for GPU. I needed to raise it little over 75W limit to get my card flatline @ 1306 with 1,212V and 3400MHz memory during solid 99% GPU usage during gaming, and now drawing about 260-270W... before it was more like 200W... With 75 i get 13 to 26MHz drop during 99% usage (Skyrim outside 5840x1080 with ENB etc), 78 stays flat at 1306MHz, and 66 would probably mean somewhere around 1170 with standard memory speed, lucky to stay over 1100 with memory at 3400...

Power draw is at around 260W: 36% from pci-e, 27% from 6-pin and 37% from 8-pin with some room for mistake, so it draws around 90W actually from pcie slot, but i don't think 1-2A more from there won't kill anything, (if i'm not very off then actually it can support much more than 75W usually) and only other way would be hardmodding to get some power off from there to the other lines, soldering new 12V supply there or somehow to teach card to suck more from others, but that's another story...

Anyway this might be only true for Gigabyte OC 670, 680 and 760, 770 ver. 1 Windforce 4G boards that use same 6+2 pwm pcb, with maybe affecting 2G ones too, but probably applies to a few more designs, first indicator being very different OC results with OC-d memory or without it, because why would gpu or memory clock less when other one is OC-d higher, they are using different pwm-s therefore given enough power from 12V rail there should be no significant difference how high is one or other unless they are on the scales...
But this is only my thinking, before i needed to downclock memory to -500 to do even successful heaven run without throttling @ 1306MHz GPU, now running both as i want)

I can understand designing it to get all important power from pcie slot, but under usage there should be some better power managment or at least turning down only one power input usage if the others still have much power left to use

Had i knew about these problems before it would save me a few days worth of googling, thinking and finally soldering, measuring etc... but since i have got my results now i believe tomorrow i'll find this information all around the internet while googling for skyrim mods or something and i just was unlucky to not find it mad.gif

All three power settings are present in Kepler Bios Tweaker 1.27. (5-th for pci-e with 66W usual default, 6-th and 7-th with 75 or 87W for 6-pin and 150/162/170W etc. for 8-pin)
Might be different on different cards, like smaller ones having one less option etc...
So in my case i just raised pci-e limit a little and was seeing miracles...
post #7289 of 7931
Alright..

Wanna try that one... smile.gifsmile.gifsmile.gif
post #7290 of 7931
Quote:
Originally Posted by mus1mus View Post

What I meant is not about upping the power limit though it is needed to achieve high clocks.

You'll just need to manually specify the clocks on KBT. Core Clock = Max Boost, Boost = Max Boost, and Max Boost = Max Boost. That way the GPU will always pick the max clock. Though this is just an assumption on my part. Someone also tried this using KBT. And the GPU clock never goes lower when under load except when idling.

nVidia's GPU Boost Tech is both a software and software implementation. So Linux users can't get Boost.
Just wanted to say boost is working in linux, at least using nvidia's driver my base clock is 1071MHz, when gaming it will run at 1215Mhz
GPU-Z says the same thing under windows
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