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~~The GTX 670 Overclocking Master-Guide~~ - Page 289

post #2881 of 3357
Quote:
Originally Posted by NicolasRush View Post

It is a mixture of VRel and VOp... There seems to be quite a bit of power mixed in the graph as well. I don't understand why the voltage throttles though.. It seems to do it more frequently the higher in clock that I go, but the card overall is still pretty stable at 1320 boost.. It just has some small throttling occurring...

There always has to be something throttling it, otherwise it wouldn't stop. Unless it's application specific then mine generally just reads both VRel and VOp at the same time. If power is coming into play at all then increasing the power target should alleviate this.
post #2882 of 3357
Quote:
Originally Posted by Deders View Post

There always has to be something throttling it, otherwise it wouldn't stop. Unless it's application specific then mine generally just reads both VRel and VOp at the same time. If power is coming into play at all then increasing the power target should alleviate this.

If you look on the previous page you can see a picture of the Perf Cap graph from GPUZ. It pretty much looks like that. Power Target is maxed out in Afterburner at 114%. Heaven has been running in the background at 1320 now for 15 minutes without a problem. The OSD shows voltage dips and boost clock dips. This is really frustrating not being able to figure out why its being throttled.. I do want to make a note that the throttling does seem to keep happening on the same exact scenes in Heaven.. Do you think there could be some underlying connection?
Edited by NicolasRush - 10/15/13 at 10:47pm
post #2883 of 3357
Quote:
Originally Posted by NicolasRush View Post

If you look on the previous page you can see a picture of the Perf Cap graph from GPUZ. It pretty much looks like that. Power Target is maxed out in Afterburner at 114%. Heaven has been running in the background at 1320 now for 15 minutes without a problem. The OSD shows voltage dips and boost clock dips. This is really frustrating not being able to figure out why its being throttled.. I do want to make a note that the throttling does seem to keep happening on the same exact scenes in Heaven.. Do you think there could be some underlying connection?

I think it's just the power target max limiting it, not sure why Afterburner limits it to 114, seems a bit low. I'm amazed you are getting those clock speeds at only 114. Mine has a max power target of 122, I've seen some that will allow 145. I had to overvolt mine in the bios and set the power target via software just to get 1202MHz
post #2884 of 3357
Quote:
Originally Posted by Deders View Post

I think it's just the power target max limiting it, not sure why Afterburner limits it to 114, seems a bit low. I'm amazed you are getting those clock speeds at only 114. Mine has a max power target of 122, I've seen some that will allow 145. I had to overvolt mine in the bios and set the power target via software just to get 1202MHz

Okay.. I came across this https://forum-en.msi.com/index.php?topic=164596.0 while I was looking around.. I think your right.. Tomorrow I'm going to try and flash this slightly modified msi 670 gtx pe bios and see by increasing the max power target to 120 if I can't get more stability. When I looked at the graph in Heaven I noticed that the voltage and clocks started fluctuating more as it got over 100%.
post #2885 of 3357
Quote:
Originally Posted by Deders View Post

I think it's just the power target max limiting it, not sure why Afterburner limits it to 114, seems a bit low. I'm amazed you are getting those clock speeds at only 114. Mine has a max power target of 122, I've seen some that will allow 145. I had to overvolt mine in the bios and set the power target via software just to get 1202MHz

Remember that those are just % and don't reflect W in any form. His 100% might be 200W which would then make 114% = 228W. Much higher than your 122% which on a stock 670 would be ~173W.
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post #2886 of 3357
Any benchmarks to really stress test my GTX670 SLI? I ran unigine benchmark and NS2, they only at most use 35% of the TDP, how can I reach 100% of TDP? redface.gif
post #2887 of 3357
Quote:
Originally Posted by Alphas View Post

Any benchmarks to really stress test my GTX670 SLI? I ran unigine benchmark and NS2, they only at most use 35% of the TDP, how can I reach 100% of TDP? redface.gif
Furmark?
post #2888 of 3357
does a score of 875 in heaven with 1131 boost seem good or bad?
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post #2889 of 3357
Quote:
Originally Posted by gunslinger0077 View Post

does a score of 875 in heaven with 1131 boost seem good or bad?

Heaven 4.0?  What settings?  I can try running one of my 670s @ 1131 and let you know the results.

 

[edit]

 

I assume it was Heaven 4.0, and max settings @ 1080p.  Just did a run @ 1137Mhz / stock ram, and got 857, so I would say you're right on par.


Edited by anubis1127 - 10/16/13 at 4:33pm
post #2890 of 3357
Should this be my max overclock i can get because i start getting driver crashes for anything above
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