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Is my GPU throttling? Am I underpowered? HD7870 - Page 2

post #11 of 17
Quote:
Originally Posted by ireg4all View Post

i have my i5 2500k at 3.3ghz.. should i overclock ?
Going back to 12.6 worked for me, looks like it was a bad reading issue

Since you have a unlocked K processor, why not? Well, unless you are running stock cooling but I bet you could even hit 4GHz on the stock cooler.
post #12 of 17
Thread Starter 
I think it was just an issue with 12.8 drivers. I don't even think the GPU was dropping in performance because some benchmarks would run at 64% usage the entire time and I would still get equal, sometimes better performance than I did with 12.6 drivers. So I believe something happened with the drivers that lead to inaccurate readings. I'll try the newest drivers when I got home from work today.
post #13 of 17
Quote:
Originally Posted by stickg1 View Post

I've only been playing Skyrim and Fall Out: New Vegas lately and it looked like the core clock, mem clock, and the GPU usage would fluctuate, but I still had 60FPS all the time and gameplay was smooth so I didn't think much about it. I was just doing some Furmark testing because I want to see how low I can get my voltage with my overclock. Anyway, in Furmark my GPU usage fluctuates between 100% and 64%, and I noticed the core and mem clock were fluctuating too.
1) Is this considered throttling?
2) Do we think that it might be under-powered? I only have a 500w PSU in this rig. The GPU is a HD7870, CPU i5-2500K @ 4.3GHz, 1 HDD, 1 SSD, 5 fans, and an Antec Kuhler 620 pump. Am I underpowered?
3) What else could the problem be?


Of course it's going to throttle! You've got powertune set to 0, which means throttle me when I hit the TDP limit. Btw, you know... furmark is the program that is designated to be throttled by both AMD and Nvidia.


Raise your powertune (powersettings) to +20%. This should be the first thing yall do on Cayman and newer silicon.
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post #14 of 17
Thread Starter 
Quote:
Originally Posted by tsm106 View Post

Of course it's going to throttle! You've got powertune set to 0, which means throttle me when I hit the TDP limit. Btw, you know... furmark is the program that is designated to be throttled by both AMD and Nvidia.
Raise your powertune (powersettings) to +20%. This should be the first thing yall do on Cayman and newer silicon.

Funny you say that because I did have it at 20% and then when I moved it back to 0% it stopped throttling. biggrin.gif

I know that's completely backwards and thats why I didn't try it at first. But it worked. I've compared the scores to my GPU "throttling" vs my old scores from 12.6 and the ones that are supposedly "throttling" are just slightly higher. So it has to be a false reading and just a problem with Afterburner or Trixx and driver 12.8.
post #15 of 17
Quote:
Originally Posted by stickg1 View Post

Funny you say that because I did have it at 20% and then when I moved it back to 0% it stopped throttling. biggrin.gif
I know that's completely backwards and thats why I didn't try it at first. But it worked. I've compared the scores to my GPU "throttling" vs my old scores from 12.6 and the ones that are supposedly "throttling" are just slightly higher. So it has to be a false reading and just a problem with Afterburner or Trixx and driver 12.8.


Unfortunately the interaction between driver and 3rd party tools isn't seamless. How are you adjusting the powertune btw? If you're using two apps, trixx/ab that can cause confusion.
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post #16 of 17
Thread Starter 
I just use Afterburner, but I tried it with Afterburner uninstalled and just using CCC, and also with just Trixx. I'm almost certain its a 12.8 driver issue. A handful of us in the "HD7800 Owner's Thread" reverted back to 12.6 and no longer have this issue. But we also have almost identical scores in all the same benchmarks as we did with 12.8 drivers and the throttling issue. It has to be just an errant reading. So I'm not too worried about it anymore. It was pretty confusing at first though.

I'm glad we sorted it out though. I came to OCN from Tom's Hardware where I mostly try to answer question threads. But I made a question thread to see the quality of input I would get and it was disappointing to say the least. Then I got into it with some teenager who said my problem was that Enermax was a no-name PSU manufacturer and that Corsair, Antec, and Seasonic make the only reliable PSUs. Sigh that site has gone downhill....
Edited by stickg1 - 9/19/12 at 4:51pm
post #17 of 17
Quote:
Originally Posted by Farmer Boe View Post

Since you have a unlocked K processor, why not? Well, unless you are running stock cooling but I bet you could even hit 4GHz on the stock cooler.

well yes i'm running stock cooling and i hit 3.7ghz with 69ºC max.

i don't think that is necessary to overclock my cpu, i dont see any bottleneck
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