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~~The GTX 670 Overclocking Master-Guide~~ - Page 254

post #2531 of 3357
Quote:
Originally Posted by Forceman View Post

Yes, you can safely increase it. I'm not sure why you chose to do it that way, but you still aren't going to overdraw the card no matter what you set in there. Are you sure you are power limiting though? It's pretty unusual for power limit to be an issue once it is increased above the stock 100%.

With the way its currently set in there right now the max 220000 i just experienced power draw throttle briefly playing BF3. It wasn't temp related. And it wasnt voltage related. Which means it likely went above the 220000 max briefly. Which is why i was wondering if i could safely raise that a bit so it doesn't happen.

Glancing at precision, i saw the power target max out at 99%, for the most part it stayed around the 80's mid 70's. But seeing as i have the bios modded to only hit 99.9%/100% It wasn't able to draw any more power that it needed. Max being 220000, causing the throttle, when it might of needed say 221500. I just wanted to make sure that raise the stock max above 225w wouldn't blow my card up, my PSU can handle it

The reason i have the min def and max all set the same is so that there is no fluctuation, i always have a steady 225w+ coming into the cards.

When you have HBAO etc all the fancy stuff turned on playing a 64 man metro server with all the explosions on the stairs C4 etc, you would be shocked to see how much power is drawn. Its pretty insane.
Edited by EnthusiastG4m3r - 6/18/13 at 1:01pm
     
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post #2532 of 3357
I am confused as to how this process works. I increased my clock offset by increments of 20mhz and was checking gpu-z to see my core and boost clock. I eventually had my boost to around 1267mhz....but in unigine my card was running at around 1215mhz and then spiked to 1347mhz and crashed. How can the card exceed the boost clock I have set? Also, my power usage never goes above 80%, why is that? I see other people hitting like 120% or higher. Can someone explain this to me? My clock speeds are not completely constant either, they fluctuate a little bit, is that normal?

-Fallacy
post #2533 of 3357
Will disabling GPU Boost (by making Base Clock, Boost Clock, and Boost Limit in KBT all the same) for the GTX 670 possibly contribute to overclocking stability?
post #2534 of 3357
Thank you very much for the guide. Using the long method, I have what seems to be a very stable overclock.
Max Core Speed: 1228 MHz
Memory Clock: 3663 MHz

Graphics card is part of a liquid-cooling loop, so temperatures were no issue. Never got higher than 50~C

Some tips for others.
-Read the guide very carefully. (obvious)
-If you crash, I recommend doing a complete reboot of your system every time. The guide says to simply restart Precision-X.... this did not work for me.
-Have some patience. Consider this a project and give it some time (even with the 'Quick Method'). I spent about 6 hours doing my overclock.
-Take lots of notes and be methodical about your process.
-Overclocking is an on-going process. The guide gets you 99% of the way there. But over time, you may have to adjust numbers and lower clocks speeds as you may run into issues with games in the future. This is why taking notes is so important.

I've spent a lot of time going through my Steam games library now and everything seems to be running flawlessly.

I have the factory overclocked EVGA FTW Geforce 670. After the overclock and writing some numbers down, i seem to be getting an average boost of 5-6 FPS.
post #2535 of 3357
So I changed the stock TIM on my bottom 680 which runs about 3-4 hotter to a Cool Laboratory Liquid Pro and its now running 4-5c cooler than the top card at a fixed fan speed. I was very pleased by the temp difference but what shocked me is that the stock TIM so hardened and I had to use a card to scrape it off.
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post #2536 of 3357
subbed!
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post #2537 of 3357
I'm confused by this... shouldn't the core max show as 1050mhz or am i fudging two different numbers.
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post #2538 of 3357
Any way to remove/disable the thermal throttling?
post #2539 of 3357
Quote:
Originally Posted by 00firebird View Post

I'm confused by this... shouldn't the core max show as 1050mhz or am i fudging two different numbers.

No. Each card boosts to a different speed, that's just the nature of the Kepler boost technology. So you have the base boost clock (which is what is on the box, so 1006 for GTX 680s, for example), then you have your card's actual boost clock speed (the difference from the base boost clock to your boost clock is called the Kepler boost by some), and then you have the overclocked speed, which is your card's boost clock plus the offset you specify in Afterburner/Precision.

In your case it looks like your base boost clock is 980, your card's actual boost clock is 1105, and your overclocked speed is 1175. The 1050 in the screenshot is just the base clock plus the offset, which is what non-aware software reports (it uses the base boost clock instead of your card's actual boost clock - so 980+70=1050).
Edited by Forceman - 6/30/13 at 6:19am
post #2540 of 3357
Quote:
Originally Posted by LuminatX View Post

Any way to remove/disable the thermal throttling?

one way is to keep the temps under 70c with a good cooling solution smile.gif
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