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~~The GTX 670 Overclocking Master-Guide~~ - Page 276

post #2751 of 3357
I've just purchased an additional Asus GTX 670 DCu II for sli.

I've disable my original TOP to find hte max oc on this new card.

I have been experiencing very starange results.

I'm using MSI afterburner 3.0 beta 14.

When setting voltage to +100mv and power limit to 117% and giving the card any type of overclock above ~1240mhz (boost) the gpu usage drops below 100%. This results in scores lower than stock settings. Also, in some cases the voltage isn't increasing at all.

Very strange since my TOP hasn't had any of these issues and run 1336/3456.

Any ideas?
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post #2752 of 3357
Quote:
Originally Posted by Forceman View Post

there are many, many people running BF3 with overclocked cards, so to say BF3 doesn't work with anything but stock clocked cards is completely incorrect. There is no software reason why BF3 wouldn't work with an overclocked card.

Sorry man, but that's just plain wrong.

The first wrong is that I never said "BF3 doesn't work with anything but stock clocked cards".

The second wrong is that hardware needs the software to recognize the settings. Go to any config file of the most basic game, and you will see that without command line, hardware does nothing. That goes for ANY program and computer hardware.

My posts were clear, I re-read them to be sure. No point in retyping my points since they aren't being read anyways. rolleyes.gif
post #2753 of 3357
Quote:
Originally Posted by B3L13V3R View Post

Sorry man, but that's just plain wrong.

The first wrong is that I never said "BF3 doesn't work with anything but stock clocked cards".

The second wrong is that hardware needs the software to recognize the settings. Go to any config file of the most basic game, and you will see that without command line, hardware does nothing. That goes for ANY program and computer hardware.

My posts were clear, I re-read them to be sure. No point in retyping my points since they aren't being read anyways. rolleyes.gif

Well, you said this:
Quote:
And you cannot OC past the rated clocks of the card with BF3.

Which sure sounds like saying BF3 doesn't work with anything but stock clocks.

And I don't understand what you are trying to say in the second point. The software doesn't know or care what speed the card is running.
post #2754 of 3357
Quote:
Originally Posted by Forceman View Post

Well, you said this:


Which sure sounds like saying BF3 doesn't work with anything but stock clocks.

And I don't understand what you are trying to say in the second point. The software doesn't know or care what speed the card is running.

Well, you kinda should paste the rest of the statement;. Which was... "And you cannot OC past the rated clocks of the card with BF3. That is, after speaking with EA support about my situation, the guy was clear that the game does not support OC for many cards."

As for the software statements:

So... Beacuse of the POWER of the Internet... instead of ME typing out my thoughts on what I hope will not be wasted on someone "too lazy" to read more than a few lines... Here is an explaination that should allow anyone that can connect the dots to see how a video card and the game that borrows it's resources rely's on software layers to do it's job...
Quote:
At the very basic level, plain text code eventually translates to 0's and 1's. These 0's and 1's represent low and high voltage levels. At this point, voltage levels control various circuits.

Think of a battery powered fan. Current provided by the battery powers an electric motor, which inside, uses electricity to create a emag-field which causes a shaft to rotate, which drives the fan-blades to spin. This is an example of how voltage can become physical.

You could build a "switch" that given the proper voltage, will eventually get the power supply to stop pulling current from the wall.

Obviously it's a lot more complicated than that, but that's the gist of it.

To make things easier, computer's are comprised with layers of abstraction.

At the very lowest level is voltages, circuits, transistors, and silicon. The next layer above hardware is the operating system. Rather than re-writing code for every type of hardware access over and over again, the OS manages the hardware, and provides "hooks" to use it. These hooks, or "interfaces" allow your code to have a common method to access disparate hardware. So using the interfaces provided by the OS, you can write your Application.

In each of these layers, there are sub layers, for example hardware might have firmware--a sort of low-level instruction set that dictates how the hardware should run, stored in EEPROM, and loaded when the drive is powered up. Another sublayer is how a higher level language like python provides a libraries to write network software without having to program directly to the raw socket api provided by the OS.

The OS handles most hardware/software interaction. Hardware vendors write "plugins/modules/drivers" which allows the OS to control their specific hardware.

So you would write a software Application that takes advantage of these OS provided interfaces to hardware. For example if you wanted to power down the computer, windows provides an interface to shutdown the computer. Your software would call this interface, and upon compilation/interpretation, turned into code that will call an interface for the OS. This interface, in turn will execute a well known set of instructions to instruct the computer to shut down. These instructions are 0's and 1's, low and high volts, which access a specific part of the computer that is designed to handle
powerup/shutdown/standby, and given the right signal, will do just that.

Heisted from" http://stackoverflow.com/questions/3043048/how-does-software-code-actually-communicate-with-hardware


Since I'm already here:

Just one of about 100 links to complaints and "solutions" in regards to NVIDIA cards and BF3.

http://www.ubergizmo.com/2011/12/battlefield-3-crash-bug-solution/
Edited by B3L13V3R - 8/29/13 at 1:27pm
post #2755 of 3357
Quote:
Originally Posted by qazzaq2004 View Post

I've just purchased an additional Asus GTX 670 DCu II for sli.

I've disable my original TOP to find hte max oc on this new card.

I have been experiencing very starange results.

I'm using MSI afterburner 3.0 beta 14.

When setting voltage to +100mv and power limit to 117% and giving the card any type of overclock above ~1240mhz (boost) the gpu usage drops below 100%. This results in scores lower than stock settings. Also, in some cases the voltage isn't increasing at all.

Very strange since my TOP hasn't had any of these issues and run 1336/3456.

Any ideas?

Man I wish I knew... Would take some experimenting. With that, here are my settings for EVERY game outside of BF3 which as you see in previous posts will not work with any OC, not even 1 MHz change to anything. Crazy...




Hopefully this can lead you to something, but don't forget that my cards are under full water blocks. Here are the temps for reference. thumb.gif

post #2756 of 3357
Quote:
Originally Posted by B3L13V3R View Post

And you cannot OC past the rated clocks of the card with BF3.

Sure you can if your card can run BF3 at the clocks you dial in. It's just a function of being stable enough to execute the code and process the data that BF3 loads it up with. The game is demanding in that regard is all. Of course if you call EA up with a gpu crashing bug to report, the first thing they will tell you is that if your card is OC'd... not their problem... they don't "support" that.

The 320.xx drivers introduced a bunch of BF3 crashers. Have all those been shaken out yet in the 326.xx beta? You might be butting heads with driver bugs.
Edited by michael-ocn - 8/29/13 at 8:05pm
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post #2757 of 3357
Quote:
Originally Posted by michael-ocn View Post

Sure you can if your card can run BF3 at the clocks you dial in. It's just a function of being stable enough to execute the code and process the data that BF3 loads it up with. The game is demanding in that regard is all. Of course if you call EA up with a gpu crashing bug to report, the first thing they will tell you is that if your card is OC'd... not their problem... they don't "support" that.

The 320.xx drivers introduced a bunch of BF3 crashers. Have all those been shaken out yet in the 326.xx beta? You might be butting heads with driver bugs.


Hopefully you read the other posts past the one you quoted.

Nope... still can't overclock with BF3 with any drivers. Not on ONE monitor and not on TREE monitors and not 1MHz change... not kidding. Plays perfect with stock clocks and that's all.

Every other major game title, not a problem at the previous post clocks. mad.gif
post #2758 of 3357
I heard the newest drives allow for OC by 1MHz like the good o days instead of 13MHz jumps, yes?
     
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post #2759 of 3357
Quote:
Originally Posted by B3L13V3R View Post

Hopefully you read the other posts past the one you quoted.

Nope... still can't overclock with BF3 with any drivers. Not on ONE monitor and not on TREE monitors and not 1MHz change... not kidding. Plays perfect with stock clocks and that's all.

Every other major game title, not a problem at the previous post clocks. mad.gif

I did read thru the other posts. I think its very odd that your card crashes so specifically only on that game if OC'd at all. I just wanted to clarify that BF3 is not looking at gpu clock rates and intentionally crashing if it sees a non-stock value.
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post #2760 of 3357
Hi, was just wondering if anyone has found a way to raise the temperature at which these cards start to throttle? I've looked through all the bios settings that KeplarBiosTweaker shows me but I can't find anything. I noticed in reviews of the 760's that the limits are a lot higher.

I own an Asus 670 DirectCU II (non top edition) and have adjusted the voltage in the bios so that it reaches 1.187 in game, giving me what most people can get without overvolting (1202MHZ) I've also clocked the memory to just shy of 7GHz

In doing so I've found the temperature rises to 70c even with the fan at 100%, I'd like to be able to raise the limit so the fan doesn't have to be so high to get the maximum clockspeed.

Also in the pic below I can't be sure if the actual TDP at 100% is actually closer to 141W and at 122% is around 170W. It would tally with what I measure from the wall (-92% efficiency and minus what the rest of the system stressed shows, taking into account about 15W for idle.)

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