Okay so alot of people have been asking questions about their cards crashing, red screening, and getting driver crashes. Its usually caused by what im about to explain. This thread is mainly to help other who post problem threads so i can provide a quick fix link. If a mod would sticky this that would be great as well.
 
This here will explain why cards keep crashing when gaming for a little while.
(Exert from overclock.net overclocking guide http://www.overclock.net/...clocking-master-guide)
 

Kepler Boost (aka, Dynamic Clocking Boost, abbreviated as "KB"):
This is the new Dynamic Clocking feature found on the Kepler-based GPUs; It will dynamically add more performance to the card if it's at a suitable temperature and suitable power percent. If the GPU is not drawing too much power or running too hot, then this Kepler boost value is added to the Boost Clock when the card is under load. It's maximum amount is set in stone and can't be increased beyond what Nvidia set it at when the GK104 chip was made. Each card has a different maximum Kepler Boost. For example, some cards will have a KB value as low as 104MHz (and perhaps even lower) and some as high as 234MHz, the average is somewhere around 130MHz and 143MHz. The only constant is the Kepler Boost is always a multiple of 13 (ie, 13, 26, 104, 130, 234, etc). However, the thing to keep in mind is, the maximum Kepler Boost will only be active when the card is not too hot or drawing too much power. If the card gets too hot, then the Kepler Boost value will be throttled down below its true maximum in 13MHz increments. The first thermal throttle point is at 70C, then 80C, then 85C and lastly at 95C. Here's a graph for easy reference:


Additionally, If the card is drawing too much power, it will also throttle itself down in 13MHz increments. I will go into more detail below on how to maximize the Kepler Boost in the Overclocking Section.

One thing to keep in mind is the Kepler Boost is only throttled once per throttle point. For example, if the GPU got up to 75C, it would be throttled exactly one time at 70C by 13MHz; It would not be throttled continuously until the temperature dropped back below 70C.

 
So basically when you are gaming, if your temp reaches 70C, your card is going to downclock. This causes problems when gaming (also benching) causing red screens, black screens, system crashes, and driver crashes. The fix to this is simple. Provide your card with better cooling.The best way to do this is with EVGA Precision X available here.
 
**This may or may not be the reason for crashes and red screens but its best to set up anyways and seems to solve people's problems sometimes.
 
Option #1 (Manually change fan speed)
Uncheck Auto, then drag pointer to desired fan speed (limited to 80%, can unlock 100% with bios mod)
 
Option #2 (Set custom fan curve)
1. Click on Fan Curve

 
2. Check enable automatic fan control

 
3.Adjust the dots where you want them to be by clicking and dragging. I have mine set to be at max 80% fan speed at 70C.

 
4. Click OK
 
 
 
If you follow the guide correctly, your new 600 series graphics card should not crash during games because of high temps. If the problem persists you may start a thread for additional help but your card will most likely need RMA unless its another part in your system that is faulty.
 
Here are 2 pictures on the 4gb models of the 680 and 670 that list features and minimum requirements.
 

 

 
 
 

+!,great info.have not had any crashes or red screens yet on my 4gb 680 ftw.but i am going into precision now thanks

Can anyone provide a link or instructions as to how one would update the BIOS to unlock 100% fan speed?

and if ppl are getting red screens without hitting the 2 thresholds?
 
and also the thresholds are there to keep the card running at "safe" levels and to prevent any harm done to the card, not crash them, unless there's a faulty  algorithm and timing of such adjustments when it does reach the temp thresholds.
 
not arguing, just bringing up some important questions.

This post is incorrectly labeled and need to be corrected.
Downclocking by itself, does NOT cause Red Screens
 
The article is about the known temp downclocking behavior of kepler 600 series cards.
 
I suggest that it be renamed to be less misleading to those suffering from Red screens
 
 
 
 
 
 
 
 

eternitykh

haha yeah you are right, it's free and doesn't hurt to try, but i think anyone whos hitting 70+ should set a fan profile to alleviate the throttling anyways, regardless of crash or not.

reason why i mentioned this is because i have gotten a random red screen once and never again, as i cannot replicate it, and i know im nowhere close to 70. could be from a overly aggressive OC, but that would point the crashing at OC instability, and not the downclocking that causes it. however, that could be just a 1 time thing with my particular setup.

Very true

better?

My first asus 670 top i bought was boostin to 1292mhz, a more agressive fan curve fixed the crashes it had. I returned it regardless because it would crash without the custom fan curve..

Thanks RJ!

I don't know of there is a problem with Kepler cards or if it has to do with NVIDIA's new stance on things. I think they are trying to reduce overclocking so we have to continually buy new cards. I mean 80% fan limit, 70c temp limit, no ev bot? sounds like they are.

No correlation. As Maniac stated, the red screens are more than likely a software conflict. If a card crashes while running under spec (sub 98c), then the card should be RMA'd for a replacement that does run under the promised specs. 

My GTX 670 FTW has had issues crashing in Far Cry 3. First game that ever crashed it, but then I get a guarantee crash whenever I try to mine for bitcoins. I have solved this by throttling by power, which is probably a similar solution for heat. I keep mine at 75C max now, and no crashes.
However, I have a question that maybe someone experienced could answer?
I noticed in Precision X, when I dont throttle my card the voltage can go up to 1.25+. When its getting up there is usually when I experience crashes. Ofc the heat is going higher, but only into the 80s max, and 600s should be fine into the high 90s.
In ELEET tuning utility, my VGPU is set to 0.975V. Could these crashes be not from heat, but because my voltage is set lower then the card is trying to draw? I have not done any experimentation with this, IE setting the VGPU voltage higher through ELEET, or seeing what the BIOS says. I dont want to damage the card, but I am really curious what happens if I set the VGPU voltage up to 1.25, then see if I continue to crash without throttling.
 
EDIT: Im asking in this thread, because if these crashes arent only heat, but the answer IS the cards going over the voltage they're allowed, I think it belongs in here

mikemurdock
My GTX 670 FTW has had issues crashing in Far Cry 3. First game that ever crashed it, but then I get a guarantee crash whenever I try to mine for bitcoins. I have solved this by throttling by power, which is probably a similar solution for heat. I keep mine at 75C max now, and no crashes.
However, I have a question that maybe someone experienced could answer?
I noticed in Precision X, when I dont throttle my card the voltage can go up to 1.25+. When its getting up there is usually when I experience crashes. Ofc the heat is going higher, but only into the 80s max, and 600s should be fine into the high 90s.
In ELEET tuning utility, my VGPU is set to 0.975V. Could these crashes be not from heat, but because my voltage is set lower then the card is trying to draw? I have not done any experimentation with this, IE setting the VGPU voltage higher through ELEET, or seeing what the BIOS says. I dont want to damage the card, but I am really curious what happens if I set the VGPU voltage up to 1.25, then see if I continue to crash without throttling.
 
EDIT: Im asking in this thread, because if these crashes arent only heat, but the answer IS the cards going over the voltage they're allowed, I think it belongs in here

I was asked to "explain" my first response....
 
The user who posted has a x58 MB
Eleet is NOT updated for that MB and its -not- working correctly with newer Nvidia drivers...
 
It is my feeling (as a fellow x58 user) that Eleet should -never- even be installed, its in that bad of shape.
One can only guess at the problems that could happen with using (2) programs to adjust voltage, one of which (eleet) is known to not be working correctly....
You use ONE OR THE OTHER... never BOTH at the same time -ever-

In my opinion, the situation is quite scary. Thats why I suggested he uninstall it.

Thanks for the heads up