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[Official] AMD Radeon HD 6850/6870 Owners Thread - Page 516

post #5151 of 6939
Quote:
Originally Posted by SSJVegeta View Post

How do I know whether my GPU is throttling? I just replaced my ageing 8800GT with a Asus DirectCU 6850 card and I get some bad stuttering in games like Skyrim or Serious Sam 3 for example. The rest of the system is the same. Using Cat 12.1 drivers. Didn't get stuttering with my 8800GT even with the same game settings o_O
I've not overclocked it yet. What's the best program to test OC stability? MSI Kombuster?

First I have two Asus DirectCU 6850's so im biased but great choice.Your gpu is not going to throttle its going to artifact or your drivers are going to fail (with temp issues or too high of an overclock) the v-ram is another story.V-ram has ecc (error correcting code) and if your overclock is too high it will kick in and hurt performance kind of like you discribed with the shuttering.But with that said at stock clocks you should not see any of these problems.
recommendations:
1.Start over uninstall all drivers nvidia and AMD run driver sweeper to make sure its all gone and reinstall your AMD drivers(most people don't like to and its not required but if you have a separate drive for your os reinstall windows)

2.The newest drivers don't work for everybody(might as well find out now if AMD is new to you they have gotten better but the drivers are still hit and miss)

3.Check your temps although the cooling on these cards is pretty good installation of the cooler not so much.(these babies can have a bad seat and way too much tim (Thermal interface material) so even a brand new card could easily have temperature issues.

4.And possibly the most important don't rig anything don't look for a temporary fix and don't settle for good enough if you cant figure it out get the card replaced.If you find your temps are the problem and weren't planning on getting aftermarket cooling same thing get the card replaced.You don't want to take the card apart to reapply the tim (Thermal interface material) and then find out the cooler is badly warped then possibly have warranty issues too.RMA is your friend.On the other hand if the temps aren't too too bad and your comfortable doing it go for it and replace the tim.

You should get better performance out of your new card in most games but remember your new card is DX11 so if those options are available in the game your playing it will put a lot of strain on the new card that you never got with the old one. For example the combination of tessellation and depth of field on your old card would make no difference but on your new card would cut your frame rate in half.

Testing OC stability:kombuster , furmark ,occt are all great programs for quick tests (But im not going to watch that crap for hours especially since you have to game anyway to be sure) as far as im concerned the best stability testing is to run games. metro 2033,crysis 2,NFS shift 2 (all at highest playable settings) will let you know pretty fast if your unstable.Besides ive found that because my cooling is so good I can run kombuster and furmark at unstable settings for well over an hour without a problem and crash while gaming within 15mins.So if you have good cooling those programs aren't the best but if you want to just start a program and walk away I would suggest looping the heaven 2.5 benchmark at max settings that works great for me.
Edited by smoke420 - 3/27/12 at 12:33pm
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post #5152 of 6939
Quote:
Originally Posted by SSJVegeta View Post

How do I know whether my GPU is throttling? I just replaced my ageing 8800GT with a Asus DirectCU 6850 card and I get some bad stuttering in games like Skyrim or Serious Sam 3 for example. The rest of the system is the same. Using Cat 12.1 drivers. Didn't get stuttering with my 8800GT even with the same game settings o_O
I've not overclocked it yet. What's the best program to test OC stability? MSI Kombuster?

I've had the same problem with my 6870 before with a 1055t, but when i upgraded to my current 2600k, the stuttering if pretty much gone, occasionally it will stutter a little bit. Most likely the CPU's problem.
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post #5153 of 6939
does anyone know that if the Arctic cooling Accelero Mono plus will fit on my sapphire 6870?

Card:
http://www.theitwares.com/images/Sapphire_6870_1.jpg


Cooler:
http://www.arctic.ac/en/p/cooling/vga/455/accelero-mono-plus.html


The card does not have a reference cooler, but i dont know bout the PCB
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post #5154 of 6939
Quote:
Originally Posted by Phenomanator53 View Post

does anyone know that if the Arctic cooling Accelero Mono plus will fit on my sapphire 6870?
Card:
http://www.theitwares.com/images/Sapphire_6870_1.jpg

Cooler:
http://www.arctic.ac/en/p/cooling/vga/455/accelero-mono-plus.html
The card does not have a reference cooler, but i dont know bout the PCB

it should fit
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post #5155 of 6939
Thanks for the very detailed info smoke420 wink.gif

I've got the card running at 970 / 1000 with 1.220v. It's stable in MSI Kombuster 2.2 for 15 minutes with burn-in test with 1080p res, 8x MSAA and D3D9 settings and max settings in Heaven 2.5 for 30 minutes.

Does the overclock sound ok for the voltage I'm using? Temps hit 85c in Kombuster, 70c in Unigine Heaven 2.5 that's not damaging the GPU is it? I think I need better case ventilation.
Edited by SSJVegeta - 3/27/12 at 3:47pm
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post #5156 of 6939
Quote:
Originally Posted by SSJVegeta View Post

Thanks for the very detailed info smoke420 wink.gif
I've got the card running at 970 / 1000 with 1.220v. It's stable in MSI Kombuster 2.2 for 15 minutes with burn-in test with 1080p res, 8x MSAA and D3D9 settings and max settings in Heaven 2.5 for 30 minutes.
Does the overclock sound ok for the voltage I'm using? Temps hit 85c in Kombuster, 70c in Unigine Heaven 2.5 that's not damaging the GPU is it? I think I need better case ventilation.

That's not too bad, the kombustor temperatures quite high.. But as long as it doesn't artifact you're fine! thumb.gif
I don't know about your case but a side-fan really helps almost any card, which is no exception for almost all 6850's.

But as most people say, you'll never see 85c in real life applications. It's just because kombustor uses the card to it's full potential and stresses it more then anything else - After all that's what it's made for.
I thought my temps for crossfire were bad. - In Kombustor i max about 72c after 5-10 mins.
 
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post #5157 of 6939
Quote:
Originally Posted by SSJVegeta View Post

Thanks for the very detailed info smoke420 wink.gif
I've got the card running at 970 / 1000 with 1.220v. It's stable in MSI Kombuster 2.2 for 15 minutes with burn-in test with 1080p res, 8x MSAA and D3D9 settings and max settings in Heaven 2.5 for 30 minutes.
Does the overclock sound ok for the voltage I'm using? Temps hit 85c in Kombuster, 70c in Unigine Heaven 2.5 that's not damaging the GPU is it? I think I need better case ventilation.

NP
970/1000 is great if its stable at those temps .With better cooling you should be able to get 1000 on the core easy if you can't already.Your temps are pretty high I would work on cooling.Don't forget about heat soak these cards are very good at releasing heat into the case so everything is going to get hot cpu ram and so on.

I have worked hard on my temps 1000/1100 1.274v kombuster burn in 8x MSAA 1080p res 10 minutes 60c top 64c bottom until my ac kicked on and it dropped to 57c top and 62 bottom.biggrin.gif
Rig pics
Since those pics I moved my psu to the top and added another 120mm fan to the bottom and put my wheels on to lift the case up and that improved my temps a lot.

PS. My coolers are still direct cu just not the stock asus ones they just fit the stock bracket what do you think?
Edited by smoke420 - 3/27/12 at 7:57pm
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my rig
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post #5158 of 6939
Quote:
Originally Posted by smoke420 View Post

NP
970/1000 is great if its stable at those temps .With better cooling you should be able to get 1000 on the core easy if you can't already.Your temps are pretty high I would work on cooling.Don't forget about heat soak these cards are very good at releasing heat into the case so everything is going to get hot cpu ram and so on.
I have worked hard on my temps 1000/1100 1.274v kombuster burn in 8x MSAA 1080p res 10 minutes 60c top 64c bottom until my ac kicked on and it dropped to 57c top and 62 bottom.biggrin.gif
Rig pics
Since those pics I moved my psu to the top and added another 120mm fan to the bottom and put my wheels on to lift the case up and that improved my temps a lot.
PS. My coolers are still direct cu just not the stock asus ones they just fit the stock bracket what do you think?

I'm going to need a better case to improve temps like a CM690 II. I think I'm going to try and improve the overclock once I get the parts for my new rig based around an Ivy Bridge 3570K and also think about getting a second Asus 6850 since they are so cheap.

Is running Crossfire a headache?

PS: Your rig looks awesome dude! I can see why I have heat issues redface.gif
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post #5159 of 6939
Quote:
Originally Posted by SSJVegeta View Post

I'm going to need a better case to improve temps like a CM690 II. I think I'm going to try and improve the overclock once I get the parts for my new rig based around an Ivy Bridge 3570K and also think about getting a second Asus 6850 since they are so cheap.
Is running Crossfire a headache?
PS: Your rig looks awesome dude! I can see why I have heat issues redface.gif

Thanks appreciate it and short answer is yes it can be a headache sometimes.Most of the time you get close to double the performance of one card and you don't even notice crossfire but every once and a while a new game comes out and huge amounts of flicker, shuttering of just worst frame rates then one card and you have to look/wait for new caps(Catalyst Application Profiles)or even drivers.
my rig
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my rig
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post #5160 of 6939
Hi im just wondering if any1 is finding the same problem my fan is extremaly loud. It never goes above 65% and max temp of 62c overclocked at 900 / 1150 but it sounds like there is a tornado in my case I have over ear headphones on max volume and I can still hear it, its a xfx hd 6850 with the single red fan in the centre. Would a zalman replacement make it quieter and how easy are they to install?
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