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Poopy 670 overclocker, or am I doing it wrong?

post #1 of 25
Thread Starter 
So i've been following the 670 overclocking master guide, and i've set my fan to hit 100% speed once I hit 60C to prevent it from getting to 70 from throttling, but either way, it goes up and hits 70/71 max. I've followed the instructions, set the Power target to 122% (My max), set my GPU offset to +54 (Stock is 1046 MHz)


I've set the Power to 122%, and the voltage to my max (1175), and repeatedly hitting 70C, then getting lower scores than I am from default!
GPU clock offset to 49 MHz + 122% Power target + Max Voltage:


GPU clock offset to 49 MHz + 122% Power Target + Default Voltage:


Do I need to replace my reference cooler with some fancy stuff? I'm a newbie when it comes to overclocking these new cards rolleyes.gif
post #2 of 25
I too followed the guide and often get crashes in gaming. My power offset is 145, gpu 106, mem 409, and my voltage at 1125
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post #3 of 25
Well, the obvious answer seems to be just leave the voltage alone. The card will only run at 1.175V anyway, so forcing that voltage isn't really helping anything, and it may be preventing the card from reducing the voltage and clock speed (slightly) at 70C, which is forcing the card into some other kind of throttling, thereby causing your performance loss. You really shouldn't need to mess with the voltage to get a decent overclock from your card.

Have you tried keeping the Afterburner or Precision monitoring screen open while you test the card? That'll show you what happens with the clock speeds and power limit.
post #4 of 25
Quote:
Originally Posted by Forceman View Post

Well, the obvious answer seems to be just leave the voltage alone. The card will only run at 1.175V anyway, so forcing that voltage isn't really helping anything, and it may be preventing the card from reducing the voltage and clock speed (slightly) at 70C, which is forcing the card into some other kind of throttling, thereby causing your performance loss. You really shouldn't need to mess with the voltage to get a decent overclock from your card.
Have you tried keeping the Afterburner or Precision monitoring screen open while you test the card? That'll show you what happens with the clock speeds.

My default voltage is 988
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post #5 of 25
Quote:
Originally Posted by JTHMfreak View Post

My default voltage is 988

It automatically goes up to 1.175V under load. Watch the monitoring screen on Afterburner while testing so you can see what is happening with the card. It'll go up to 1.175V at load, then drop down to (I think it is) 1.155V when the temps hit 70C.
Edited by Forceman - 12/10/12 at 7:26pm
post #6 of 25
Quote:
Originally Posted by Forceman View Post

It automatically goes up to 1.175V under load. Watch the monitoring screen on Afterburner while testing so you can see what is happening with the card. It'll go up to 1.175V at load, then drop down to (I think it is) 1.155V when the temps hit 70C.

okay, I did see the voltage automatically adjust itself to the max during a game just now, temps only got to 65 though. Do you know why I can only set my fan at a max to 80% though? I can't put it below 30% either.
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post #7 of 25
Thread Starter 
I've just inspected the precision HW monitor while doing the test, and once i'm around 67-70C, it starts to drop the GPU clock ranging from 1150-1250. Do I have to drop the voltage or something?

I've upped the memory to 409 like JTHM, and it gave me a small boost, or so I believe!



How can I prevent the throttling? Just not hit 70C? Isn't it impossible if the card will go up to 1175mW regardless?
post #8 of 25
Quote:
Originally Posted by pwndupure View Post

I've just inspected the precision HW monitor while doing the test, and once i'm around 67-70C, it starts to drop the GPU clock ranging from 1150-1250. Do I have to drop the voltage or something?
I've upped the memory to 409 like JTHM, and it gave me a small boost, or so I believe!


How can I prevent the throttling? Just not hit 70C? Isn't it impossible if the card will go up to 1175mW regardless?

Throttling will happen at 70c, just gotta find a way to keep the card cooler
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post #9 of 25
Yup, like JT said ... gotta get the temps on the card down. How is your case airflow? Can you crank up your case fans at all? Have you changed TIM on a graphics card before? How about swapped out a gpu cooler for an upgraded, aftermarket cooler? Both options are worthy of consideration in this scenario. Also, how old is your card? It's not in your sig, so ... is it within the return period? There's lots of 670's out there w/upgraded coolers that will EASILY run well under 70C. I could probably turn all my case fans to 500rpm and still keep my card under 70C with it's fans at around 70%, so ...

At this point I'd say obviously your results suggest it's best to not 'force' the voltage to 1.175V, as it's apparently making your card run warmer and hence triggering the downclock.
    
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post #10 of 25
Thread Starter 
I've purchased it from someone off of OCN smile.gif I've got nice airflow going through the case, and I've got all the fans cranked up. You can't tell if it's a computer or a jet tongue.gif
What are the recommended aftermarket coolers? And nope, can't reapply TIM, got none, and i'm NEVER good at choosing TIM out. I want to try the oh so famous AS5, or AS4, whichever it was, but i'm afraid i'll get some of the TIM on the card or other components. Most of the time i'm installing it, I usually get some randomly on my hands from my clumsiness.
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