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[Official] AMD Radeon HD 6850/6870 Owners Thread - Page 375

post #3741 of 6939
Calexan, I've been testing and it's not really worth 1Ghz/1200+ unless you run a super high resolution and NEED to squeak out an extra couple of frames. If you can't do it with close to stock, I would just try and get something like 950/1150 stable, which seems to be the sweet spot.

The thing about getting errors, but no crashes is you may NOT be getting a performance boost from the overclock, and possibly a nice decrease.
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post #3742 of 6939
Quote:
Originally Posted by arrow0309 View Post
Try to raise the core voltage only (with the Msi's own AfterBurner) up to 1.22-1.25 volt and enjoy (for let's say 1000/1200).
The guys from guru3d managed to clock stable at 1044/1200 with 1.275v.

http://www.guru3d.com/article/msi-ra...hawk-review/22

Test the freq. with Occt gpu test for 10' and a lot of intensive games.
Good luck, post your results
cheers, mate
I tried your suggestion, and it works. Ran kombustor for about 30minutes there.

as for Occt, I still figuring out how to use it, the last time I did, the result gave me some cpu statistic, not the gpu




post #3743 of 6939
You can change the options so it doesn't spit out graphs. Also you ran with no error check.

You might be wasting your time. What kind of performance do you get in games? Also what is the fps in kombuster at stock setting on your 6870? I just ran with the same settings as you at 950/1150 and am getting a minimum of 158 fps which is double yours.

Your processor might be limiting you too much for any gpu overclock to really do anything for you. Post a screen of the same setting in kombuster at stock. Have you benched any other games to see if you are getting worthwhile performance?
edit..

hmmm, nevermind kombuster had to be reset for extreme burn-in mode to function for some reason. The red text was there, it just was doing anything.
Edited by Horsemama1956 - 5/24/11 at 8:27am
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post #3744 of 6939
Quote:
Originally Posted by Horsemama1956 View Post
You can change the options so it doesn't spit out graphs. Also you ran with no error check.

You might be wasting your time. What kind of performance do you get in games? Also what is the fps in kombuster at stock setting on your 6870? I just ran with the same settings as you at 950/1150 and am getting a minimum of 158 fps which is double yours.

Your processor might be limiting you too much for any gpu overclock to really do anything for you. Post a screen of the same setting in kombuster at stock. Have you benched any other games to see if you are getting worthwhile performance?
edit..

hmmm, nevermind kombuster had to be reset for extreme burn-in mode to function for some reason. The red text was there, it just was doing anything.

that low fps I believe due to the xtreme burn-in

For the games, I own and play only fifa series and Pro Evolution Soccer series regularly, which somehow my new card doesn't handle them well out of the box, (need some tweak with the Catalyst CC), so I thought that I need to OC my card. And apparently, that doesn't change, because the games underutilize my card, so they told me at the series forum.


post #3745 of 6939
I have done some benchmarking using kombuster to try and show the difference between a 950mhz core clock and 1100mhz memory clock
VS
1000mhz core clock and 1250mhz memory clock
See the results below;





I used both the extreme benchmark and normal benchmark.
The conclusion is that the 1000mhz 1250mhz clocks perform better, by a few frames per second on average.
I did use a higher than stock voltage to acheieve this clock in the banchmarks.
I dont know if you need to use as higher voltage as i did, 1.225v, but I wanted to ensure stability for the testing.
I would have done a stock comparison however my 6870 is the pcs+ which comes pre-overclocked.
    
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post #3746 of 6939
Quote:
Calexan, I've been testing and it's not really worth 1Ghz/1200+ unless you run a super high resolution and NEED to squeak out an extra couple of frames. If you can't do it with close to stock, I would just try and get something like 950/1150 stable, which seems to be the sweet spot.
there is performance gain even @ not so high resolutions reason enough for me
to keep my OC thanks rob saves me the trouble + rep for you

@ Rob

my card seems stable 1000/1250 @ 1.225v on OCCT no errors same as yours
but ill still keep 1000/1250 @ stock voltage until i encounter problems

card runs 3 to 5°c cooler @ stock voltage not sure about performance decrease
though how could voltage affect performance? but ill try to run benchies like
you did just to make sure..
Edited by Calexan - 5/24/11 at 9:54am
    
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post #3747 of 6939
Quote:
Originally Posted by arrow0309 View Post
You're wellcome
And free to raise up the clocks & voltages of your gorgeous Twin Frozr II (make use of the Msi's own utility AfterBurner, better if it is the 2.1. vers or higher)
Pretty nice temps you've got, it makes me wanna get this one for my CrossfireX (becoming so the first pcie card of the system).
As for the 1000 Mhz I'm not so lucky however got RS with sig values in every bench & game so far.
Do you mind showing us some pics with gpuz load values (on max) like those posted a couple of posts before by Calexan better if in your max oc you can get; I'd really like to see the Vreg temperature 1 of your card in full load, thanks
I have no idea what you are talking about . I am not that great with PC's!

However, my 6870 had a hardware issue so I swapped it out for the same thing again, and this one has even better temps! At max settings in BC2 with max AA and AF, I stay under 60 degrees. I am at 970/1100 right now.

Explain what you wanted me to do in a little simpler terms please

I would be happy to make a video or something if you want.

Sent from my HTC Inspire 4G using Tapatalk.
post #3748 of 6939
Quote:
Originally Posted by Calexan View Post
there is performance gain even @ not so high resolutions reason enough for me
to keep my OC thanks rob saves me the trouble + rep for you

@ Rob

my card seems stable 1000/1250 @ 1.225v on OCCT no errors same as yours
but ill still keep 1000/1250 @ stock voltage until i encounter problems

card runs 3 to 5°c cooler @ stock voltage not sure about performance decrease
though how could voltage affect performance? but ill try to run benchies like
you did just to make sure..
If something isn't completely stable, it's not working properly which is how you can get lower performance. For instance, if I lower the voltage to a point I get no errors but things still function, the OCCT test loses about 40 fps.

Seems like you just want a card to run at 1Ghz, but in reality 50Mhz doesn't make much difference unless you are benchmarking, especially when the clocks are already high. It's your hardware, so you can do what you want, but you'll never stop screwing around with it especially if you run into problems later on.

We're talking like 2 fps for hours of trial and error in real world performance. Maybe 75-100 points in 3dmark 11 with 950, compared to 1000. The 6870 doesn't scale as nicely as the 460/6850 because the clocks start out so high, unless you can get 1100+
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post #3749 of 6939
This is my AMD HD 6850 1GB GDDR 5 stock
Setting on Vision engine control
anti-aliasing = use app setting and morphological filtering
anisotropic filtering = use app setting
tessellation = amd optimized
catalyst A.I = quality (enable surface format optimization)
wait for vertical refresh = off
anti-aliasing mode = multiple-simple AA
Open GL = triple buffering

but my game like not balance fps drop an raise then drop agian went i play crysis 2 at first i play like 50-66 fps some times over 100..

how to setting my vision engine correctly
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post #3750 of 6939
i also want to join...
Sapphire HD 6850 @950/1150 stock voltage
stable so far can play RTS games....
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